Mountain Weather
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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

Moderate breeze, locally gusty
Patchwork of cloud and sun
Cool to mild
Strong warm sunshine

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Click here to download the latest PDF Last Updated Mon 18th Aug 25 at 4:35PM Last Updated Mon 18th Aug 25 at 4:35PM
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Viewing Forecast For

West Highlands
Tuesday 19th August 2025
Last updated Mon 18th Aug 25 at 4:35PM

Summary for all mountain areas

A cooler feeling day with a rather gusty east to north-east airflow. An extensive cloud sheet, with local drizzle, covering many hills from dawn, but some westernmost hills still clear. Low cloud will burn back to eastern and northern hills, with sun most widely in the west, but low cloud persisting for parts of coastal western Scotland.

Headline for West Highlands

Low cloud clearing to sunshine. Lingering Mull to Jura, with patches north Lochaber.

How windy? (On the Munros)

Easterly 10 to 20mph, strongest sustained speeds in south, gusty 25mph particularly Arran and summits near Clyde.

Effect of the wind on you?

Fairly small, but particularly in south a gusty breeze feeling noticeable, rather cool on exposed terrain.

How Wet?

Dry, bar isolated drizzly shower

Chance an isolated pocket of drizzle around cloud banks inland Lochaber in the morning and perhaps a drizzly shower from the cloud that persists from Mull to Jura, to the Arrochar Alps.

Cloud on the hills?

Breaking off hills, but persisting western coastal areas Mull to Jura.

Cloud sheet coming into Ben Nevis Range to Creag Meagaidh and Ben Alder, base around 800m, top of cloud layer around 1200-1300m. Tending to break up and burn back to leave patches. Also zone of low cloud from Mull to Jura perhaps inland to Arrochar Alps, which may cap tops most of day. Elsehwere, patches, but mostly becoming clear.

Chance of cloud free Munros?

40% coastal parts Mull to Jura, lifting to 80% elsewhere.

Sunshine and air clarity?

Sun increasingly coming through, but may stay dull from Mull to Paps of Jura and inland towards Arrochar Alps. Visibility very good away from cloud.

How Cold? (at 900m)

9 to 12C, coolest where in cloud; locally up to 13C inland, dropping into night from northeast to 7C inland.

Freezing Level

Above the summits

Viewing Forecast For

West Highlands
Wednesday 20th August 2025
Last updated Mon 18th Aug 25 at 4:35PM

How windy? (On the Munros)

Variable 5-15mph. From Glencoe southward, trending north-northwesterly with occasional gusts over tops.

Effect of the wind on you?

Largely negligible; occasional light buffeting possible in gusts over tops and elevated passes.

How Wet?

Likely dry

Small chance of spots of drizzly rain drifting around slopes west of Loch Linnhe.

Cloud on the hills?

Morning cloud west, improving

From dawn, cloud lingering for a time from Islay north towards Lochaber, bases generally above 600m; cloud patcher with higher bases well inland. Becoming well-broken for all areas and remaining patchy cloud isolated to high tops.

Chance of cloud free Munros?

40%, rising to 80%

Sunshine and air clarity?

Sunshine increasingly frequent, best inland. Excellent visibility.

How Cold? (at 900m)

From dawn, 6 to 10C, coolest central highlands. Most areas rising to 10C, locally cooler Trossachs/Arran.

Freezing Level

Above the summits

Viewing Forecast For

West Highlands
Thursday 21st August 2025
Last updated Mon 18th Aug 25 at 4:35PM

How windy? (On the Munros)

Northeast 10 to 15mph at dawn. Tending to drop out to light and variable as high pressure builds overhead.

Effect of the wind on you?

Small

How Wet?

Rainfall unlikely

Cloud on the hills?

Patches, but tending to lift off hills.

Scattered to broken areas of cloud will drift south in morning, covering slopes above 900m or so, especially in north. Bases lifting off tops mostly by afternoon.

Chance of cloud free Munros?

Lifting to 80%

Sunshine and air clarity?

Intermittent sun, becoming more extensive through the day. Visibility very good or excellent.

How Cold? (at 900m)

5 to 7C at dawn, chilliest north Lochaber and central Highlands. Lifting to 8 to 10C, highest south Lochaber and Argyll.

Freezing Level

Above the summits, but chilly start, with heavy dew in the glens at dawn.

Planning Outlook

High pressure centred toward the northwest this week, before building overhead again toward weekend. East to northeasterly winds prevailing, gusty for periods, easing out later in week. Extensively dry with sunshine best in west, low cloud for periods northern and eastern mountains with occasional drizzle. Still very dry underfoot with significant fire risk. Turning cooler through midweek, mountain temperatures falling, chilly into the valleys and glens pre-dawn, risk slight frost in Highland glens. Fine weather likely next weekend too; will likely begin to break down from the west into the following week, but uncertainty on timings of such a transition.