Monday 15th August Weather forecast for the Western Isles.

Good evening Western Isles on this Sunday evening we are seeing sunshine and cloud with some mist and low cloud. Winds under 20 mph and today’s high of 16.6C

Thunderstorms and heavy rain have impacted large parts of Scotland today. The Western Isles missed out on the storms as they went East of us. It has caused flooding in Inverness. Here is a map below showing the track of the storms from Netweather

Monday

We are once again outside the Met Office weather warnings for Thunderstorms on Monday which will be over Southern of the UK. Weather fronts still sit close to the Western Isles as highlighted by this Met Office pressure chart.

Overnight – An overcast night with some clear skies. Mist and fog patches again. Some light rain and drizzle. Winds under 20 mph.

Morning and afternoon – Staying mostly cloudy with some light rain and drizzle with a few scattered showers which could be thyndery at times.. The cloud breaking at times with occasional sunshine. Lingering and slow to clear mist and fog. Winds under 20 mph.

Evening – Overcast mainly dry with some sunshine. A few scattered showers. Some mist and low cloud. Winds of 10 to 30 mph.

Winds will be from he North and Temps of 11C to 16C

Sunrise and Sunset

Stornoway – 05:47 and 21:12

South Uist – 05:55 and 21:12

Outlook

Tuesday

We are going to see a cooler airmass moving across the Western Isles. You can this from the comparison image below showing today Sunday and Tuesday. This is from the WX charts website. Please note this isn’t low level temperature but at 1.5km above sea level.

So on Tuesday, we will see overcast conditions with spells of rain and showers. It will feel cooler and winds of 10 to 30 mph. Temps of 10C to 14C

Wednesday and Thursday – Sunshine and cloud with scattered occasionally heavy showers. Some decent spells of sunshine. Winds of 10 to 30 mph with some gusts reaching 40 mph. Temps of 9C to 15C

Friday and Saturday – Low pressure will drive our weather. We will see spells of rain and showers with brisk winds gusting 20 to 40 mph. Temps of 10C to 15C

Sunday – Low pressure clears away. Plenty of cloud with some rain and drizzle. Winds under 20 mph.

Have a great evening.

Sunday 14th August Weather forecast for the Western Isles.

Good evening Western Isles on this Saturday evening we are seeing a mixture of sunshine and cloud with light winds. Some mist and fog. When the mist and fog cleared today we witnessed some of the highest temperatures of the year. South Uist range recorded 19.5C at the Met Office both Barra and Benbecula Airports recorded 20C temps.

Image from Starlings Roost Weather showing the 19.5C at South Uist range Met Office site.

Sunday

So the Met Office yellow weather warning for Thundetorms for Scotland for Sunday has been updated. The Western Isles remains outside the warning. But worth keeping in mind if you are travelling to and from the mainland that there could be some severe storms. Below is the Met Office warning

Overnight – We are going to see an overcast night with some patchy rain and drizzle but for most, it should be dry. Some mist and fog patches. Winds under 20 mph.

Morning, afternoon and evening – Overcast with some sunshine at times but for most staying cloudy. Some mist and fog with occasional light rain and drizzle. The odd shower cannot be ruled out and again this could be thundery but the risk is low. Winds under 20 mph.

Winds will be from the North and North East. Temps of 12C to 17C

Sunrise and Sunset

Stornoway – 05:45 and 21:14

South Uist – 05:52 and 21:15

Outlook

Into the new week and there really isn’t much change and the weather will turn more mobile towards the end of the week with more rain and winds. Weather fronts still linger on Monday as shown by the Met Office surface pressure chart.

Monday – Overcast with some rain and drizzle. Mist and low cloud in patches. Winds under 20 mph. Temps of 12C to 15C

Tuesday – We are going to see overcast conditions with some rain and drizzle along with brisk winds of 20 to 40 mph. Temps of 10C to 15C

Wednesday – Winds slowly ease with plenty of cloud clearing to sunshine later. Temps of 10C to 13C

Thursday – Overcast with spells of rain heavy at times. Winds of 10 to 30 mph. Temps of 12C to 16C

Have a great evening,

Saturday 13th August Weather forecast for the Western Isles.

Good evening Western Isles on this Friday evening we are seeing plenty of cloud with some rain and drizzle. Sunshine in places with some mist and fog. Winds under 20 mph and today’s high 16.6C

Below is the surface pressure chart for Saturday which one again showers the warm front close to the islands. Once again bringing the risk of mist and fog at times with drizzle.

Overnight – A cloud dominating night with spells of light rain and drizzle. Some clear spells at times but mist and fog patches will form again widely. Winds under 20 mph.

Morning and afternoon – For many staying largely dry but there will be some light rain and drizzle. There is a chance of a few heavier showers skirting the West coast of Lewis but these more than likely stay offshore. Sunshine at times but mainly hazy. Mist and fog patches again could prove stubborn to clear. Winds under 20 mph.

Evening – Again overcast with spells of light rain and drizzle. But for most it will be dry. Some sunshine the best of this the further East you are. Some mist and low cloud. Winds under 20 mph.

Winds will be from the North and North East. Temps of 12C to 19C

Sunrise and Sunset

Stornoway – 05:43 and 21:17

South Uist – 05:50 and 21:17

Outlook

Thunderstorm warnings

So the Met Office issued several thunderstorm warnings for Sunday and Monday earlier today. These cover a large part of the UK but don’t cover the Western Isles. At this stage, the very worst will be over the mainland. But just because we aren’t in a thunderstorm doesn’t mean that our risk is zero. It can mean one of two things that the impacts of any storms for us are too low for a warning or the thunderstorms are likely to miss us. The greatest risk at the moment for us seeing thundery showers would be Sunday into Monday. But again stressing the point that there is a lot of uncertainty at this stage and I will keep you updated. This is one of the main things about doing these more in depth forecasts is to have the ability away from the shorter form forecasts to go into more detail to talk about the weather and warnings.

I will watch with interest how the forecast evolves in the coming days and how the Met Office amended its warnings and I will keep you updated. Below is the warning for thunderstorms that covers Scotland.

Anyway back to the outlook

Sunday – Overcast risk of showers with some sunny spells. A chance they could be thundery. Winds under 20 mph. Temps of 12C to 17C

Monday – Overcast with some sunny spells. Scattered showers heavy at times with winds increasing to 30 mph by the end of the day. Temps of 11C to 15C

Tuesday and Wednesday – Things will feel cooler as we enter to a cooler airmass. Sunshine and cloud. Mostly dry. Winds of 10 to 25 mph. Temps of 8C to 13C

Have a great evening

Friday 12th August Weather forecast for the Western Isles.

Good evening Western Isles. That was another dull and damp day with mist and low cloud a plenty. We are currently seeing plenty of cloud with some rain and drizzle. Heavy in places with mist and low cloud. A few sunny spells. Winds under 20 mph.

One thing I did note from today was the rise in visibility at Stornoway Airport from 1,800 meters to 27,000m from the 15:00 reading to the 16:00 reading. With the wind direction shifting to come in from the North.

Thanks to Roost Weather for the images.

Friday

Once again we are in a rut. A warm front sits close by to the Western Isles. Again we will see plenty of cloud mist and drizzle. Met Office surface pressure chart below.

Overnight – A cloud dominating night with spells of rain and drizzle with some mist and low cloud. Winds under 20 mph.

Morning and afternoon – Again staying cloudy with spells of rain and drizzle. Mainly light. Some mist and low cloud with fog patches at times. Some sunny spells. Winds under 10 mph

Evening – Yes more cloud with light rain and drizzle at times. Winds under 10 mph. Some breaks in the cloud.

Winds will be from the North and North East. Temps of 12C to 18C

Sunrise and Sunset

Stornoway – 05:40 and 21:20

South Uist – 05:48 and 21:20

Outlook

Saturday and Sunday – Sunshine and cloud light winds. Some rain and drizzle. Winds under 20 mph. temps of 12C to 19C

Monday and Tuesday – Sunshine and cloud with brisk winds gusting 20 to 40 mph. Temps of 12C to 15C

Longer range – Still a signal of more unsettled weather for next week but the weather pattern becomes more mobile then stuck under endless grey clouds.

Have a great evening

Thursday 11th August Weather forecast for the Western Isles.

Good evening Western Isles on this Wednesday evening we are seeing some rain and drizzle with plenty of cloud. Some rain and drizzle mainly across Lewis and Harris. Winds gusting 25 mph. Todays high of 19.1C

19.1C was the highest temperature at Stornoway Airport this is shown on the image below with credit to Roost Weather.

I don’t ask for much but I really could do with some more sunshine. Its been warm but we are really lacking on the sunshine front. Yes another heatwave for the Southern half of the UK. We just have to make the most of the good days or good half days that we get.

Thursday

A weather front sits across the Western Isles on Thursday. Below is the Met Office surface pressure chart for Thursday

Overnight – A cloud dominating night with spells of rain and drizzle. Some mist and low cloud. Winds of 10 to 30 mph.

Morning and afternoon – Staying mostly overcast with spells of rain and drizzle. The rain will become heavy at times. Rain gradually clearing away. Some sunny spells. Winds of 10 to 30 mph.

Evening – The rain and drizzle becomes more confined to Lewis. Plenty of cloud with some sunny spells. Winds under 20 mph.

Winds will be from the South West. Temps of 12C to 15C

Sunrise and Sunset

Stornoway – 05:38 and 21:22

South Uist – 05:46 and 21:22

Outlook

Friday – Overcast with some spells of rain and drizzle. Plenty of cloud. Light winds. Temps of 12C to 15C

Saturday and Sunday – Sunshine and cloud with light winds. Mainly dry. Temps of 12C to 19C

Monday – Sunshine and scattered showers. Winds increasing 10 to 30 mph. Temps of 12C to 17C

Long range – staying fairly unsettled as the weather becomes more mobile across the whole of the UK next week.

Have a great evening.

Wednesday 10th August Weather forecast for the Western Isles.

Good evening Western Isles on this Tuesday evening we are seeing plenty of cloud with some sunshine. Winds gusting 40 mph and today’s high of 16.8C and 18.1C was recorded in Ness from a personal weather station.

It’s been a fairly windy day across our islands today. This chart below from Roost Weather highlights the winds through out the day at Stornoway Airport.

Wednesday

Wednesday will start off dry but spells of rain will move in later in the day. We will see an approaching weather front pushing into the Western Isles. It will be another mild day with brisk winds. Below is the surface pressure chart from the Met Office for Wednesday.

Overnight – Will see plenty of cloud with some clear skies. Spotty spells of rain and drizzle but for most staying dry. Winds of 20 to 40 mph.

Morning – Sunshine and cloud with some decent spells of sunshine. For most largely dry but some light rain and drizzle. Winds of 20 to 40 mph.

Afternoon and evening – Rain will move in from the West but for parts of Uist and Barra will stay dry with plenty of cloud. For the rest of the islands rain will move in and we will see some occasional heavier spells of rain. Some low cloud and drizzle at times. Winds of 20 to 40 mph. But slowing easing under 20 mph to end the night.

Winds will be from the South West and temps of 12C to 19C

Sunrise and Sunset

Stornoway – 05:36 and 21:24

South Uist – 05:44 and 21:25

Outlook

Thursday – We are going to see an overcast day with spells of rain heavy at times. Winds of 10 to 25 mph from variable directions. Temps of 12C to 16C

Friday – Overcast with spells of rain and drizzle. Winds under 20 mph. Temps of 12C to 15C

Saturday and Sunday – Sunshine and cloud. A few scattered showers with winds under 20 mph. Temps of 12C to 18C

Have a great evening

Tuesday 9th August Weather forecast for the Western Isles.

Good evening Western Isles on this Monday evening we are seeing plenty of cloud with rain and drizzle. Some mist and low cloud. Winds gusting 10 to 25 mph and today’s high of 17.5C

It’s been another dull day with low visibility and mist, and fog patches. Just such a stagnant pattern. Barra has particularly seen low cloud. Below we have the Airport Metar from today which highlights the low cloud.

More here https://metar-taf.com/EGPR

Tuesday

Overnight – Spells of rain will move across the Western Isles this will be heavy at times. Further mist and low cloud. Winds of 20 to 40 mph. It will be a mild night for us with temps staying around 13C to 15C

Below is the 4am chart from the UKV Met Office model from the Weather Outlook website.

Morning and afternoon – More of the same we are going to see plenty of cloud with spells of rain and drizzle. Mist and low cloud. Sunshine at times in the afternoon. It’s going to be warm despite the cloud and drizzle. Winds of 20 to 40 mph. Temps reaching 20C in places.

Evening – Mainly overcast with spells of rain and drizzle. Mist and low cloud. Some sunny spells. Winds of 20 to 40 mph.

Winds will be from the South West. Temps of 14C to 20C

Sunrise and Sunset

Stornoway – 05:34 and 21:27

South Uist – 05:42 and 21:27

Outlook

Wednesday – Sunshine and cloud with brisk winds. Some scattered showers. Winds of 20 to 40 mph. Again a warm day with temps of 12C to 20C

Thursday – Will very much depend on the position of the cold front. We could see further spells of rain heavy at times. But the worst of the rain could stay offshore.

Sunshine and cloud with spells of rain and showers. Winds of 10 to 30 mph. Temps of 14C to 18C

Friday and Saturday – Sunshine and cloud with light winds under 20 mph. Temps of 12C to 19C

Have a great evening

Monday 8th August Weather forecast for the Western Isles.

Good evening Western Isles on this Sunday evening we are seeing an overcast evening with spells of drizzle along with mist and low cloud. Winds are under 20 mph and today’s high of 16.6C so far.

Monday

A cold front will sweep across the Western Isles on Monday bringing more rain. This cold front is highlighted on the Met Office surface pressure chart below

Overnight – A cloud dominating night with some clear spells. Rain and drizzle will move in from the West as the night goes and becoming heavy at times. Winds of 10 to 30 mph.

Morning and afternoon – Staying overcast with occasional sunny spells. Rain will become heavy and slow moving at times. Further rain and drizzle. Winds of 20 to 40 mph.

Evening – Overcast with spells of rain and drizzle. Mist and low cloud with fog patches. Winds of 10 to 30 mph

Winds will be from the South West and temps of 12C to 17C

Sunrise and Sunset

Stornoway – 05:31 and 21:29

South Uist – 05:40 and 21:29

Outlook

Tuesday and Wednesday – Two very similar days with winds being the main feature. Winds of 20 to 40 mph widely with a risk of some gusts reaching 50 mph. Sunshine and cloud. We are likely to see warm temperatures.

Here is the GFS chart for Wednesday showing the 20C note because we are on small islands the models sometimes struggle with the resolution of the high temps so 15C for Uist and Barra is likely to be on the lower side.

GFS chart for Wednesday for 15:00

The temps for later in the week have back off somewhat on recent runs we were looking at 20/22C for Thursday and Friday next week and things will change between now and then and at this stage things are looking under 20C

Thursday – Overcast with spells of rain and drizzle but lighter winds under 20 mph. Temps of 12C to 16C

Friday – A fine and dry day with sunshine and cloud. Winds under 20 mph. Temps of 12C to 17C

Next weekend – Fine and dry with light winds along with sunshine and cloud.

Have a great evening.

Sunday 7th August Weather forecast for the Western Isles.

Good evening Western Isles on this Saturday evening we are seeing plenty of cloud with rain and showers. Heaviest for Lewis and Harris drier for Uist and Barra. Some hazy sunshine. Winds gusting 40 mph and today’s high of 15.1C

It has been a North and South divide across the Western Isles today as shown by the rainfall accumulation map from Netweather. Some spots estimated at 24 mm for the last 24 hours

Sunday

Overnight – Plenty of cloud with some rain and drizzle at times. This heavy in places with some mist and low cloud. Winds of 10 to 30 mph.

Morning and afternoon – Sunshine and cloud. Some decent spells of sunshine at times. Some scattered showers and rain at times this will be heavy. Winds of 10 to 30 mph.

Evening – Staying fairly cloudy with some outbreaks of rain and drizzle. Mist and low cloud. Winds under 20 mph.

Sunday’s weather we are very much in between weather fronts and high pressure dominates across the South of the UK with brisk airflow across our islands.

Sundays surface pressure chart from the Met Office

Winds will be from the South West and temps of 12C to 18C

Sunrise and Sunset

Stornoway – 05:29 and 21:32

South Uist -05:38 and 21:32

Outlook

Monday – Overcast with spells of rain heavy at times some mist and low cloud. Winds of 20 to 40 mph. Temps of 14C to 18C

Tuesday – Sunshine and cloud becoming warmer some rain and drizzle. Winds of 20 to 40 mph. Temps of 12C to 20C

Wednesday and Thursday – Sunshine and cloud winds slowly easing and becoming drier. Winds of 10 to 30 mph. Temps of 12C to 22C

Friday – Possibly becoming even warmer but a long way off yet and plenty of uncertainty. I will take a more detailed look at the high temps on my Sunday evening in depth forecast.

Have a great evening.

Saturday 6th August Weather forecast for the Western Isles.

Good evening Western Isles on this Friday evening we are seeing plenty of cloud with some rain and drizzle. Some clear spells. Winds gusting 25 mph and today’s high of 14.9C

Saturday

We are going to see winds strengthening on Saturday with a frontal system moving across the islands. The strongest winds are likely across Lewis and Harris with gusts reaching 45 mph. The chart below comes from the Met Office UKV model and the image from the weather outlook.

Overnight – We are going to see plenty of cloud with spells of rain and drizzle this heavy at times. Winds of 10 to 30 mph.

Morning and afternoon – Plenty of cloud with some dry spells but further rain and drizzle at times becoming heavier in the later afternoon. Some sunny spells but largely overcast. Winds of 20 to 40 mph.

Evening – Overcast with further spells of rain and showers. Heaviest for Lewis and Harris drier for Uist and Barra. A few sunny spells. Winds of 20 to 45 mph.

Winds will be from the South West. Temps of 12C to 17C

Sunrise and Sunset

Stornoway – 05:27 and 21:34

South Uist – 05:36 and 21:34

Outlook

Sunday – An overcast day with brisk winds with spells of rain and drizzle. Winds of 10 to 30 mph. Temps of 12C to 17C

Monday – Spells of rain and showers heavy at times with plenty of cloud. Winds of 20 to 40 mph. Temps of 12C to 15C

Tuesday – A few days off as yet but it’s been showing on a number of forecast model runs in a row so keeping an eye on it. But a deep area of low pressure will push close to Iceland and could see winds gusting 50 mph for a time. This chart below again from the Met Office UKV and the weather outlook website.

So Tuesday would be an overcast day with spells of rain and drizzle with winds gusting 40 to possibly 50 mph. Temps of 12C to 17C

Wednesday – More of the same with brisk winds gusting 20 to 40 mph overcast and spells of rain and drizzle. Temps of 12 to 19C

Have a great evening

Friday 5th August Weather forecast for the Western Isles.

Good evening Western Isles on this Thursday evening we are seeing rain and showers moving across the islands. These are heavy in places. Some sunny spells with plenty of cloud. Winds gusting 30 mph and today’s high of 15.7C

We have seen a wet day for South Uist with 10 mm of rain being recorded at the Met Office site.

Image credit to Roost Weather

Friday

Overnight – Clear skies and cloud with some showers heavy at times. Temps dropping down into single figures in spots. Winds under 20 mph.

Morning and afternoon – Some decent and prolonged sunshine with variable amounts of cloud. A few showers heavy at times. Becoming more scattered later in the day. Winds under 20 mph.

Evening – Becoming drier with a few scattered showers. Some decent and prolonged sunshine at times,

Sunrise and Sunset

Stornoway – 05:25 and 21;36

South Uist – 05:34 and 21:36

Outlook

Both the GFS and ECMWF show heavy rain across Lewis and Harris on Saturday evening us the slider to move between images. Image credit to WX charts.

Saturday – Will be an overcast day with spells of rain and drizzle.Heavier rain into the evening. Winds of 20 to 40 mph

Sunday – Sunshine and showers with plenty of cloud and winds of 20 to 40 mph.

Monday – Overcats with winds gusting 20 to 40 mph heavy rain a times. Temps of 12C to 17C

Tuesday – Largely fine and dry and feeling warm with sunshine and cloud. Winds of 20 to 40 mph. Temps of 12C to 20C

Have a great evening.

Thursday 4th August Weather forecast for the Western Isles.

Good evening Western Isles on this Wednesday evening we are seeing rain and showers moving across the islands. Heavy in places with plenty of cloud. Winds under 20 mph and today’s high of 15.8C

August has started in a similar vein to July with spells of rain plenty of cloud and limited amounts of sunshine. Overnight 3rd into the 4th saw a fairly mild night with temps at South Uist staying above 13.5C

Image credit to Roost Weather

Thursday

High pressure sits across much of the UK on Thursday but for us in the islands, a trough will move across the islands.

A trough as defined by the Met Office is

https://www.metoffice.gov.uk/weather/learn-about/weather/how-weather-works/synoptic-weather-chart

Overnight – We are going to see a mixture of clear skies and cloud with some showers these will be heavy at times. Winds under 20 mph

Morning and afternoon – Sunshine and showers. Some decent spells of sunshine at times. Showers will be fairly frequent and heavy. but some dry spells at times. Winds of 10 to 25 mph.

Evening – Sunshine and cloud with showers occasionally heavy at times. Winds of 10 to 25 mph.

Winds will be from the West and North West. Temps of 9C to 16C

Sunrise and Sunset

Stornoway – 05:23 and 21:39

South Uist – 05:31 and 21:38

Outlook

Friday – Sunshine and cloud with a few scattered showers but mainly dry. Winds under 20 mph. From the West and North West. Temps of 12C to 16C

Saturday – An overcast day with spells of rain and drizzle heavy at times. Winds of 20 to 40 mph from the South West. Temps of 12C to 17C

Sunday – Overcast with spells of rain and drizzle along with plenty of cloud. Winds of 10 to 30 mph. Temps of 11C to 16C

Monday – Will be a much warmer day with again a chance of seeing the warmest day of the year so far. Sunshine and cloud with winds gusting 20 to 40 mph. Temps of 12C to 20C

Longer range and once again there is a lot of mixed signals. The EC model is favouring things becoming more settled but the GFS again keeps things unsettled for end of next week.

Have a great evening

Wednesday 3rd August Weather forecast for the Western Isles.

Good evening Western Isles on this Tuesday evening we are seeing plenty of cloud with some sunny spells. Rain and showers heavy with some mist and low cloud. Winds gusting 40 mph and today’s high of 18.4C

It has been a consistently windy day across our islands. Winds haven’t gotten above 40 mph but they haven’t eased all day at both Stornoway Airport and South Uist Met Office sites

Below is the wind speeds and gusts for today for the Met Office South Uist site today

Tuesday

Overnight – We are going to see spells of rain moving across the islands this will be heavy at times. Plenty of cloud with spells of drizzle at times. Winds of 20 to 40 mph.

Morning and afternoon – Sunshine and cloud with some scattered showers. Some lingering morning heavy rain. Still plenty of cloud with some decent spells of sunshine. Winds will ease. Winds under 20 mph.

Evening – Showers will increase in frequency but at times merging into some longer spells of rain. In between some decent spells of sunshine. Winds under 20 mph.

Sunrise and Sunset

Stornoway – 05:21 and 21:41

South Uist – 05:30 and 21:41

Outlook

High pressure continues to build towards the end of the week across our islands but it will stay unsettled with further spells of rain and showers but lighter winds. Below is the Met Office chart showing high pressure building in.

Met Office surface pressure chart for Thursday

Thursday – We are going to see a day of sunshine and showers these will be heavy at times. Winds under 20 mph from the West and North West. Temps of 8C to 15C

Friday – Sunshine and scattered showers. Heavy at times. Some decent and prolonged sunshine at times. Winds of 10 to 30 mph. Temps of 11C to 15C

Saturday – Rain and showers heavy at times. Some sunny spells. Winds of 20 to 40 mph from the South West. Temps of 12C to 18C

Sunday – Sunshine and cloud with brisk winds. Feeling warm. Mainly dry. Winds of 10 to 30 mph. Temps of 12C to 17C

Have a great evening.

Tuesday 2nd August Weather forecast for the Western Isles.

Good evening Western Isles on this Monday evening we are seeing rain moving across the Western Isles this is heavy in places. Winds gusting 30 mph and today’s high 17.1C

South Uist range has already recorded 5mm of rain today

Image from Roost Weather

Tuesday

Low pressure will dominate our weather on Tuesday as shown by the surface pressure chart from the Met Office

Overnight – A cloud dominated night with spells of rain and drizzle Heavy at times with some mist and fog. Winds of 20 to 40 mph

Morning and afternoon – It’s going to be an unsettled day with spells of rain and showers. Drizzle at times with some sunny spells in the breaks in the cloud. Winds of 20 to 40 mph.

Evening – Again some dry spells but further rain and showers with some drizzle at times. A few sunny spells. Winds of 20 to 40 mph.

Winds will be from the South West. Temps of 12C to 17C

Sunrise and Sunset

Stornoway – 05:19 and 21:43

South Uist – 05:28 and 21:43

Outlook

Wednesday – Sunshine and showers with plenty of cloud. Winds easing under 20 mph by the end of the day. Temps of 8C to 16C

Thursday – Despite high pressure building in we are going to see further unsettled weather to end the week.

We are going to see a day of sunshine and showers heavy at times from the North West. Winds of 10 to 30 mph. Temps of 8C to 14C

Friday and Saturday – high pressure sites well to our South West but spells of rain and showers will feed across the islands.

So we will see further spells of rain and showers heavy at times. Winds increasing again gusting 20 to 40 mph. Temps of 8C to 13C

Have a great evening

Noctilucent clouds July 2022

At the end of July we witnessed one of the most stunning displays of Noctilucent clouds across our islands. In this blog, we share some of your stunning photographs and explain what Noctilucent clouds are.

Out first image comes from Mawa Macdonald

This from the Met Office explains what Noctilucent clouds are and how to see them

You can read more from the Met Office here https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/clouds/other-clouds/noctilucent#:~:text=Noctilucent%20clouds%20are%20extremely%20rare,Height%20of%20base%3A%20200%2C000%20feet.

Tolsta taken by Eric Tottman-Trayner

Stornoway – Cathy Hannaway

Shawbost – Tracy Watson

Holm taken by Marianne Mackenzie Ross

Stornoway taken by John Morrison

Ness – Norman James Campbell

Thanks to everyone who shared photos with us. We are heading towards the end of the season this year.

Monday 1st August Weather forecast for the Western Isles.

Good evening Western Isles on this Sunday evening we are seeing a fine and dry evening with sunshine and cloud. Along with light winds. Winds under 20 mph and today’s high of 16.7C

After plenty of sunshine in the last couple of days. Low pressure will dominate the weather for the first half of the new week. The chart below shows the areas of low pressure moving in.

Met Office surface pressure chart for Monday at 12:00

Monday will also be a wet day with some parts of the islands that could see up to 20 mm of rainfall

Total rainfall accumulations to midnight Tuesday from the EC

Monday

Overnight – Clear skies and cloud. Cloud increases as the night goes on. Some early morning sunny spells. Winds under 20 mph.

Morning – Sunshine and cloud with some decent prolonged sunshine with plenty of cloud. A few scattered showers. Winds under 20 mph.

Afternoon – Overcast for most with some sunshine. Rain will slowly spread into Barra, Vatersay and then South Uist becoming heavy. Winds of 10 to 30 mph.

Evening – Rain will feed across the Western Isles this will become heavy and persistent. All parts of the Western Isles will see rain by the end of the evening. Some drizzle at times. Winds of 10 to 30 mph with some gusts reaching 40 mph.

Winds will be from the South and South West shifting South East to end the day. Temps of 9C to 17C

Sunrise and Sunset

Stornoway – 05:16 and 21:46

South Uist – 05:26 and 21:45

Outlook

Tuesday – Will see rounds of rain and showers moving across the islands. Heavy at times with winds of 20 to 40 mph. Temps of 12C to 17C

Wednesday, Thursday and Friday -m Sunshine and showers heavy at times. Decent spells of sunshine in between. Winds of 10 to 30 mph. Temps of 8C to 16C

Long range – Next weekend is looking more settled with lighter winds and more sunshine.

Have a great evening

Sunday 31st July Weather forecast for the Western Isles.

Good evening Western Isles on this Saturday evening we are seeing plenty of cloud with some sunshine. Some light rain and drizzle. Winds under 20 mph and today’s high of 15.8C

It’s been another fairly dull day. Thursday and Friday gave us 24 hours of sunshine at Stornoway Aiport which has increased the total month to 61.3 hours of sunshine which is still only about 46% of the long term average.

Image from Starling’s roost weather showing sunshine totals for the month so far at Stornoway Airport.

Sunday –

Overnight – Clear skies and cloud. Some scattered showers. It will be a cooler night with temps down to 8C to 9C in some spots. Winds under 20 mph.

As you can see from this chart some parts of the island could get down to single figures overnight. Also highlights that some parts of the mainland could get down to 5C

Image from the Weatheroutlook UKV

Morning and afternoon – Sunshine and cloud. Some decent and prolonged sunshine at times. A few scattered occasionally heavy showers. Winds under 20 mph.

Evening – Sunshine and cloud with some patchy rain and drizzle. Some decent and prolonged sunshine. Winds under 20 mph.

Winds will be from variable directions and temps of 8C to 17C

Sunrise and Sunset

Stornoway – 05:14 and 21:48

South Uist – 05:24 and 21:47

Outlook

Monday – Sunshine and cloud with light winds. Rain moves in later in the day becoming heavy. Winds will be from the South and South West. Temps of 12C to 17C

Tuesday – Rain and showers with some sunny spells. Winds of 20 to 40 mph. Temps of 11C to 17C

Wednesday and Thursday – Sunshine and showers heavy at times with brisk winds. Winds of 10 to 30 mph. Temps of 10C to 14C

Have a great evening

Saturday 30th July Weather forecast for the Western Isles.

Good evening Western isles on this Friday evening we are seeing rain moving across the islands this is heavy in places. Plenty of cloud. Winds gusting 40 mph and today’s high of 18.8C

here is a recent radar grab showing the rainfall moving across the Western Isles this evening. Quite the contrast from this morning with the blue skies and sunshine.

Image courtesy of Neweather.

Saturday

Overnight – The heavy rain will slowly clear away. Staying overcast with some drizzle and low cloud. Winds of 20 to 40 mph.

Morning – Overcast with some rain and drizzle. A few scattered showers and some sunshine. Winds of 10 to 30 mph.

Afternoon – Sunshine and cloud with some drizzle. A few again scattered showers but becoming dry for most by the end of the afternoon. Winds of 10 to 30 mph.

Evening – For most fine dry and sunny with variable amounts of cloud. Some patchy rain but again for most it will be dry. Winds under 20 mph.

Winds will be from the South and South West. Temps of 10C to 17C

Sunrise and Sunset

Stornoway – 05:12 and 21:50

South Uist – 05:22 and 21:49

Outlook

Sunday – We are expecting to see a mainly fine and dry day with sunshine and cloud. A chilly early morning with temps down to 7C

Monday – Sunshine and cloud with light winds. Some rain moving in later in the day. Winds under 20 mph till the late evening gusting 30 mph from the South and South West shifting South East to end the day. Temps of 9C to 16C

Later into next week after a spell of high pressure two areas of low pressure will bring more unsettled weather for the middle of next weather as highlighted in the chart below for Tuesday

Met Office surface pressure chart for Tuesday.

Tuesday and Wednesday – Brisk winds gusting 20 to 40 mph with cloud and spells of rain heavy at times. Temps of 9C to 7C

Looking further ahead and its looking like things might turn more settled high pressure dominating towards the end of next week and the second week of August. Something I keeping an eye on.

Have a great evening

Thursday and Friday forecast for Western Isles.

Good afternoon Western Isles I will be off rock for a few days so just a slight break in forecast updates from me. It will return to normal Friday evening with an in depth forecast for Saturday.

Thursday

Plenty of cloud with some decent and prolonged sunshine where the cloud breaks but it will prove stubborn to clear in some spots. It should be largely dry but some patchy light rain and drizzle is possible at times. Winds under 20 mph from the South and South East. Temps of 12C to 17C

Friday

Weather fronts will move across the islands on Friday bringing rain to all parts

After a dry start rain will spread into all parts and be heavy during the evening and overnight with winds gusting 40 mph. Some morning sunshine. Winds will be from the South and South West. Temps of 12C to 17C

We are not expecting significant rainfall but 10 mm could fall in places between now and the end of the day on Friday

00z EC run showing rainfall accumulations to end of Friday.

Thanks for reading next update Friday night.

Wednesday 27th July Weather forecast for the Western Isles.

Good evening Western isles on this Tuesday evening we are seeing a mixture of sunshine and cloud with some scattered showers mainly confined to Lewis and Harris. Winds under 20 mph and today’s high of 14.7C

I was hoping for more sunshine today across our islands. There was some sunshine but again it was dull in Stornoway where the Met Office site is. So far until today, Stornoway has had just 34 hours of sunshine for the month with just 1.4 hours of sunshine a day on average. Just 26% of the average sunshine for the month after 82% of the month. The graphic I am about to share will hopefully make it clearer.

Sunshine summary from Roost Weather

Wednesday forecast

Overnight – Clear skies and cloud with some scattered showers. These occasionally heavy. Winds under 20 mph.

Morning and afternoon – Sunshine and cloud with a few scattered showers. Some occasionally heavy. Some decent spells of sunshine. Winds under 20 mph.

Evening – Some sunshine. A few showers occasionally heavy. Plenty of cloud. Winds under 20 mph

Winds will be from variable directions and temps of 9C to 16C

Sunrise and Sunset

Stornoway – 05:06 and 21:56

South Uist – 05:16 and 21:55

Outlook

Thursday – Expected to be the best day of the week with some decent and prolonged sunshine. With variable amounts of cloud. Winds under 20 mph. Temps of 12C to 19C

Friday – A change on the cards with weather fronts bringing in rain and plenty of cloud. The rain heavy at times. Winds gusting 40 mph.

Met Office surface pressure chart for Friday.

We will look into more detail about the rainfall amounts on tomorrow evening’s update.

Saturday and Sunday – Sunshine and showers heavy at times. Lighter winds. More sunshine on Sunday.

Have a great evening.