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.
Wednesday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
Cool to mild
Air temperature 8 to 12C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
Cool to mild
Air temperature 8 to 12C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
West Highlands
Wednesday 20th August 2025
Last updated
Tue 19th Aug 25 at
4:32PM
Summary for all mountain areas
High pressure to northwest, north-easterly winds; gustiest England and Wales. Cloud sheet fairly extensive from dawn, breaking up through day to sunshine, but patches persisting for the northern Highlands, into eastern Border Hills, and Pennines. Best sun in the west, aside from slow-moving cloudy zone of western Argyll.
Headline for West Highlands
Patchy low cloud burning off to sun. Zone of cloud and local showers west coast.
How windy? (On the Munros)
North-easterly or variable 5-15mph, highest around dawn.
Effect of the wind on you?
Largely negligible; occasional light buffeting possible in gusts over tops and elevated passes.
How Wet?
Very little or no precipitation
Chance of the odd drizzly shower from zone of stubborn low cloud, western parts of Argyll, before it tends to clear offshore to the west.
Cloud on the hills?
Most hills clear or clearing. Zone of cloud parts of Argyll.
Zone of cloud from Arrochar Alps to Jura north through western Argyll and Ardnamurchan, bases generally above 600m; general rise in base, and tending to move west offshore in afternoon. Elsewhere, patches mostly early in morning and toward east and north, before clearing.
Chance of cloud free Munros?
40% till early afternoon western parts of Argyll/Isles. Otherwise, lifting to 90%.
Sunshine and air clarity?
Sunshine increasingly frequent, best inland. Zone of cloud Ardnamurchan and into parts of Argyll may be slow to clear to sun; maybe not till mid afternoon. Excellent visibility.
How Cold? (at 900m)
From dawn, 5 to 8C, coolest central highlands. Most areas rising to 10C, locally cooler Trossachs/Arran.
Freezing Level
Above the summits, but inland glens will see chilly dawn after a slight ground frost.
Viewing Forecast For
West Highlands
Thursday 21st August 2025
Last updated
Tue 19th Aug 25 at
4:32PM
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.
Viewing Forecast For
West Highlands
Friday 22nd August 2025
Last updated
Tue 19th Aug 25 at
4:32PM
How windy? (On the Munros)
North-westerly or variable 5 to 10mph
Effect of the wind on you?
Negligible
How Wet?
Rain unlikely
Scope for an isolated light shower. Otherwise dry.
Cloud on the hills?
Varied patches, tending to clear. May linger west coast.
Varied banks across the hills from dawn at varying heights, ribbons of mist some glens. Hills likely to clear completely, but patches may lap on to west coast.
Chance of cloud free Munros?
Lifting to 70% away from west coast.
Sunshine and air clarity?
Sunshine may come through more widely through the day after dull start., but may be hazy due to upper cloud. Visibility very good.
How Cold? (at 900m)
5C lifting to 8 to 10C
Freezing Level
Above the summits, but slight ground frost some inland glens.
Planning Outlook
High pressure dominates through this week, with initial north-easterly winds, easing out as the high builds overhead with lighter winds. With a cooler air-mass in place, widely chilly dawns, with a slight frost for some valleys and glens, especially in the Highlands. Banks of cloud coming and going on the hills, with periods of sunshine, generally best in the west. Wind and rain may edge off the Atlantic into next week, but much uncertainty in detail and timing of this change.