The Northwest Highlands Forecast

Areas north from Knoydart in the west, and the Great Glen towards the east (NB. Does not include Mull and areas west of Loch Linnhe, these are found in the West Highlands forecast.)

Viewing Weather Forecast for Monday 24th June 2019
Forecast last updated on Sunday 23rd June 2019 at 3:09pm

Today | Tuesday | Wednesday

Summary for all mountain areas

A warm and humid day with extensive low cloud affecting many hills and pulses of thundery rain moving north through the morning followed by further clusters of showers or thunderstorms. Becoming largely dry through the afternoon across Wales as winds veer southwesterly. Best of the cloud breaks will be towards the west coast.

Headline for The Northwest Highlands

Rain/low cloud extending north, risk lightning. Best breaks in west.

How windy? (On the Munros)

Easterly; speeds varying markedly, both in time and between adjacent tops. Widely 35-45mph, sudden ferocious gusts lower slopes & valleys.

Effect of wind on you?

Arduous walking frequently higher terrain and in some areas lower slopes, where periods of sudden gusts reaching some valleys.

How Wet? (Precipitation and its impact)

Rain extending north; risk lightning

Low confidence of detail/timing: A swathe of rain, focused across eastern areas and in places heavy and thundery, will spread north across the Highlands through the morning. Will tend to clear to showery bursts of rain for the afternoon, again risk of local thunder.

Cloud on the hills?

Extensive in rain

Ahead of rain, most hills free of cloud. However, during and after rain, fog will form extensively, with patches from lowest slopes upward above more eastern valleys. Locally may vary markedly. Generally highest cloud base will be on and near Skye where some breaks to tops at times.

Chance of cloud free Munros?

20%, but 50% at first and also toward west coast through day.

Sunshine?
Air clarity (below cloud)

Little or no sunshine. Visibility very good prior to rain, but turning very hazy - even when dry. Very poor visibility in heavy rain.

How Cold? (at 900m)

8 to 11C, increasing humidity.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Tuesday 25th June 2019

A very warm and humid week ahead, will become hot and exceptionally humid for a few days from around the middle of the week with the risk of isolated bursts of rain/thunderstorms; although many areas will miss these and stay dry. Some periods of low cloud across the hills; especially focused across eastern hills. Winds from an east or southeasterly direction and blustery at times. Increasing risk of a thundery breakdown over the weekend with fresher conditions arriving from the west.

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