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.

Friday's Forecast

Gale force, walking arduous
Frequent or persistent rain
Poor visibility
Cool to mild

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Click here to download the latest PDF Last Updated Thu 17th Sep 26 at 4:22PM Last Updated Thu 17th Sep 26 at 4:22PM
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Viewing Forecast For

West Highlands
Friday 18th September 2026
Last updated Thu 17th Sep 26 at 4:22PM

Summary for all mountain areas

Already windy with light showery rain over western hills early in the day, but conditions will worsen from the west as gales strengthen and rain / drizzle becomes persistent, some heavier rain; cloud bases lower to widely blanket hills, lowest in west.

Headline for West Highlands

Windy, strengthening gales; showery rain then constant rain.

How windy? (On the Munros)

West turning south-southwesterly 35-45mph, briefly less in morning, then increasing rapidly into early afternoon to 50-60mph, soonest southwest coastal areas; stronger gusts developing, in places 70mph higher mountains.

Effect of the wind on you?

Strenuous conditions in exposure, deteriorating to become more widely difficult with considerable wind chill; powerful gusts giving buffeting toward some lower slopes.

How Wet?

Early showers, rain sets in afternoon, some heavy falls

Showers drifting from the west through morning, tending to ease briefly, then more persistent rain arrives from the west into afternoon, for several hours of rain with heavier falls. A legacy of patchy rain and drizzle into evening-night. Increasingly wet underfoot, streams rising.

Cloud on the hills?

Varied over tops, filling in afternoon

Most cloud towards west coast in morning, above 700m, and tending to lift with breaks above 1100m inland at times. Through afternoon, cloud fills in, widely above 900m and lowest south and west, locally towards 400-500m. May break up somewhat toward dusk, but shrouding most hills, lowest in west.

Chance of cloud free Munros?

60%, lowering to 10%

Sunshine and air clarity?

Any early weak sun giving way as high cloud thickens to be overcast, dull. Generally hazy, and deteriorating to poor in cloud and rain.

How Cold? (at 900m)

5C rising to 7C afternoon, reaching 9C toward evening, then slight drop into night. Feeling often near to -5C in direct wind.

Freezing Level

Above the summits.

Viewing Forecast For

West Highlands
Saturday 19th September 2026
Last updated Thu 17th Sep 26 at 4:22PM

How windy? (On the Munros)

Southwesterly 40 to 50mph, at times 60mph around higher summits, powerful squally gusts around showers.

Effect of the wind on you?

Arduous walking conditions, balance frequently challenged on high exposed terrain. Significant wind chill.

How Wet?

Frequent rain

Showery all day, rain rarely fully ceasing for long, a mix of drizzle and some heavier bursts. Some drier windows more often further inland.

Cloud on the hills?

Extensive higher areas

Often covering mountains above 700-900m, some lower patches near coast and islands. Brief breaks higher up inland and base lifting a little during daytime.

Chance of cloud free Munros?

20%

Sunshine and air clarity?

Brief glimpses of sun, more often inland. Hazy, particularly coasts, widely poor visibility in rain, better at times inland, good where dry.

How Cold? (at 900m)

5 or 6C, trending slightly cooler later in the daytime. Feeling like -5 to -8C in the wind.

Freezing Level

Above the summits. Into the night, may drop close to freezing on highest tops in Ben Nevis group.

Viewing Forecast For

West Highlands
Sunday 20th September 2026
Last updated Thu 17th Sep 26 at 4:22PM

How windy? (On the Munros)

Westerly 50mph early morning, tending to lessen gradually to 30-40mph through middle of day, 25mph later.

Effect of the wind on you?

Challenging conditions, significant wind chill, improving gradually but still blustery, affecting balance on exposed tops.

How Wet?

Rain on and off mostly morning

Light showery rain most common near coast particularly near/west of Loch Linnhe in the morning, odd showers move inland. Tending to fade to become more often dry.

Cloud on the hills?

Lifting higher with some breaks

Banks of cloud above 700-900m in the morning, most common on hills toward west of Lochaber to Mull. Tending to rise and break higher with time, but some patches likely come and go above 1000m.

Chance of cloud free Munros?

40%

Sunshine and air clarity?

Fairly cloudy, some sun breaking through; thin high cloud may move in later. Some coastal haze, otherwise visibility very good.

How Cold? (at 900m)

4 or 5C, little change all day, then tending to rise onward into night. Feeling like -3 to -7C directly in wind.

Freezing Level

Close to freezing on Ben Nevis summit in the morning, later rising well above tops.

Planning Outlook

Gale-force southwesterly winds continue extensively on the mountains into Saturday and early Sunday. Frequent rain over western hills, showers passing eastwards, tending to fade during Sunday as higher pressure begins to build from the south, allowing wind speeds to lessen too over England & Wales. Warmer into early next week, though higher humidity brings more cloud some drizzly rain to the west. A generally more promising forecast for late September as high pressure nearby offers drier and warmer weather for more places. Weather systems grazing past Scotland to the north still bring locally stronger winds and occasional rain mainly to the northwest.