Thursday 21st July Weather forecast for the Western Isles.

Good evening Western Isles on this Wednesday evening we are seeing plenty of cloud with some rain and drizzle. Some clear skies. Winds under 20 mph and today’s high of 16.2C

This is the part of the in-depth forecast blog where I take some time to look back at the day’s weather. But today like many days in deep summer for our islands there isn’t a lot to talk about. High pressure rose with plenty of cloud and patchy rain with some sunshine at times.

Thursday

Overnight a mixture of clear skies and cloud with some patchy light rain and drizzle. Some early morning sunshine. Winds under 20 mph.

Morning and afternoon – Again sunshine and cloud with some decent and prolonged sunshine. Scattered showers with some patchy rain and drizzle. Winds under 20 mph.

Evening – Plenty of cloud with some patchy rain. Some sunny spells. Winds under 20 mph.

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

Sunrise and Sunset

Stornoway – 04:54 and 22:08

South Uist – 05:05 and 22:06

Outlook

Friday – looks set to be a mainly fine and dry with sunshine and cloud. Light winds and feeling warm. Winds under 10 mph from variable directions. Temps of 9C to 17C

Saturday – A broad area of low pressure will bring increasing winds and rain on Saturday across the Western Isles.

Met Office surface pressure chart for Saturday

It will start dry, but heavy rain will move across the islands later in the day. Winds will also increase with the strongest for Uist and Barra. Winds gusting 40 mph from the South East. Temps of 14C to 18C

Below is the rainfall chart for Sunday showing up to 25 mm of rain falling for parts of the Western till Sunday night.

Image comes from the 12z euro model run off total rainfall accumulations.

Sunday – Further heavy and persistent rain. Winds gusting 40 mph but easing later. Temps of 12C to 18C

Monday – Sunshine and showers. Plenty of cloud. Winds under 20 mph. Temps of 11C to 16C

Have a great evening

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