Mountain Weather
Information Service
West Highlands Forecast

West Highlands

Western Highlands accessible from, and south of, Glenfinnan (Road to the Isles) and Glen Spean (includes Creag Meagaidh). This area includes Ben Nevis and the mountains around Glencoe. In the east, from Ben Alder south to Loch Lomond and Trossachs NP. Also Arran and Mull.

Today's Forecast

Light wind, negligible impact
Patchwork of cloud and sun
Clear
Warm
Strong warm sunshine

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Click here to download the latest PDF Last Updated Mon 19th May 25 at 4:30PM Last Updated Mon 19th May 25 at 4:30PM
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Viewing Forecast For

West Highlands
Tuesday 20th May 2025
Last updated Mon 19th May 25 at 4:30PM

Summary for all mountain areas

Mostly sunny and warm in Scotland; some patchy low fog in the north at dawn. Sunny too in England and Wales, fair weather cloud building afternoon with localised showers. Local heavy bursts later in western areas (including Galloway) with chance of isolated lightning, showers more scattered across the Pennines. Fairly light wind for all.

Headline for West Highlands

Strong warm sunshine; chance more cloud around

How windy? (On the Munros)

Easterly then soon variable, 10mph or less. Winds increase later afternoon for most: northerly 15-20mph from Lochaber/Mull and northward. To the south, northwesterly 10-15mph.

Effect of the wind on you?

Mostly small

How Wet?

Rain very unlikely

Small chance of an isolated shower late afternoon into evening, mainly inland and southern areas.

Cloud on the hills?

Hills clear; some morning low fog in the south

Chance for patches of low fog in glens near the Trossachs. Soon fading for cloud-free hills.

Chance of cloud free Munros?

Becoming nearly certain

Sunshine and air clarity?

Strong sunshine, some fair-weather cloud. A band of high cloud may linger in southern areas at times shrouding sun. Visibility excellent or superb.

How Cold? (at 900m)

8 or 9C at dawn, some cool patches around Arran/Clyde sea lochs. Rising to 13C well inland, nearer 11C along the coast. Some local coastal slopes will see little change.

Freezing Level

Above the summits

Viewing Forecast For

West Highlands
Wednesday 21st May 2025
Last updated Mon 19th May 25 at 4:30PM

How windy? (On the Munros)

North to northeasterly 10 to 20mph, strongest near the coast. More northerly into evening, up to 25mph.

Effect of the wind on you?

Fairly small, becoming more blustery into the evening; may affect balance on exposed ridges. Feeling chilly.

How Wet?

Rain unlikely

Small chance an isolated shower well inland and near Clyde sea lochs later afternoon.

Cloud on the hills?

Little if any

Rare patches in morning soon lifting or dispersing.

Chance of cloud free Munros?

90%

Sunshine and air clarity?

Mostly sunny, some patchy high cloud around for a time. Visibility excellent.

How Cold? (at 900m)

7C rising to 10 to 12C, warmest in south. Likely to lower from north from dusk.

Freezing Level

Above the summits

Viewing Forecast For

West Highlands
Thursday 22nd May 2025
Last updated Mon 19th May 25 at 4:30PM

How windy? (On the Munros)

Easterly at first 10-15mph. Becoming variable in southern areas, 10mph or less towards Trossachs.

Effect of the wind on you?

Negligible

How Wet?

Little or no rain

Small chance an odd shower forming in southern areas.

Cloud on the hills?

Banks inland and south lifting and breaking

Banks of cloud around 900-1100m well inland and south in the morning; high summits may poke above cloud tops at first. Cloud rises and breaks through morning for mostly clear hills, a few caps come and go on highest peaks.

Chance of cloud free Munros?

50% inland at dawn, rising to 90%

Sunshine and air clarity?

Intermittent or frequent sun, possibly overcast in the south at dawn. Some fair weather cloud building. Superb visibility.

How Cold? (at 900m)

3C, nearer 5C on west coast hills. Rising up to 8C.

Freezing Level

On or just above the highest summits at dawn, soon lifting.

Planning Outlook

High pressure weakens into midweek. Some passing rain/showery bursts into Wales and England on Wednesday will lead to a mostly dry Thursday and Friday. A northerly breeze will lower temperatures; freezing levels will lower to high terrain of north and east Scotland for a time. In the short-term, ground conditions remain extensively dry, water courses are very low and the fire risk is very high. Weather turns very unsettled into the weekend as a strong frontal system arrives from the west on Friday night, bringing heavy rain and strong winds to all areas. Showers and a brisk wind will follow into the weekend.