Saturday 20th August Weather forecast for the Western Isles.

Good evening Western Isles. Sorry for the later update this evening. A number of technical issues with my Word press account tonight and laptop problems. Hopefully resolved now.

On this Friday evening, we are seeing plenty of cloud. With spells of rain and drizzle. Some clear skies. Winds gusting 30 mph and today’s high of 16.3C

Saturday

So as been talking about most of the week we are going to see some blustery winds overnight and some heavy rain. The Met Office tweeted about blustery winds overnight. I struggle with the term strong winds for wind speeds less than 50 mph but it is classed as gale force.

We are also going to see some heavy rain with up to 20 mm of rainfall falling in some locations. This is all moving across the island courtesy of a developing area of low pressure. Below is a rainfall accumulation map from WX chart with rainfall to midnight on Sunday

Overnight – We will see heavy and slow moving rain pushing across the islands. This will be persistent in places. Overcast with winds gusting 20 to 40 mph with some gusts reaching 50 mph during the early hours of Saturday morning. We have a slight chance of some of these showers being thundery in nature.

Morning and afternoon – Frequent heavy rain and showers which will at times merge into some longer spells of rain. Some of the showers will be thundery at times. In between some decent spells of sunshine. Winds of 20 to 40 mph.

Evening – Little change with further frequent rain and showers heavy at times. Again some longer spells of rain. In the breaks in the cloud some sunshine. Winds of 10 to 30 mph gusting 40 mph.

Sunrise and Sunset

Stornoway – 05:58 and 20:59

South Uist – 06:05 and 21:00

Outlook

Sunday – Sunshine and cloud with winds easing. Mainly dry. Winds of 10 to 30 mph and temps of 11C to 16C

Low pressure clears away and high pressure builds in on Sunday.

Monday – Overcast with spells of rain and drizzle. Winds increasing for Uist and Barra during the evening. Temps of 10C to 16C

Tuesday and Wednesday – Sunshine and showers heavy at times with brisk winds gusting 30 mph. Temps of 11C to 16C

Have a great evening.

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