Cairngorms National Park and Monadhliath. Also includes the Ben Alder area hills between Loch Ericht and Loch Laggan.
Cairngorms NP and Monadhliath
Thursday 17th September 2026
Last updated
Wed 16th Sep 26 at
4:00PM
Strong westerly winds, gales widely on Scottish mountains; cool air and significant wind chill factor. Showery rain with heavy bursts mixed in most frequent in western Scotland, but tending to extend eastward. Showers develop more often for northern England too. Fewer showers for Wales after early rain clears.
Mountain gales, feeling distinctly chilly; bursts of rain develop.
West-southwesterly strengthening 40 to 55mph, at times sustained speeds over 60mph on higher Cairngorms into afternoon and onward.
Strenuous walking in exposure, becoming arduous with considerable buffeting, gusts could knock you over on high terrain; significant wind chill.
Showers increasingly, some heavy, risk hail
Showers push onto hills west of the A9 from dawn, more scattered east with dry windows to start, but will become more frequent and increasingly push east for the rest of the day; heavy falls forming, risk of hail.
Varied on high terrain, later filling in
Banks above 800-900m in the morning, lowering somewhat in showers; well-broken east Cairngorms, summit breaks. Banks over high terrain increasingly frequent, may fill in above 800-900m; east of Glenmore, hills clear to 1000m well into the day.
60% lowering to 20%
Patchy sun, extended windows to the east, trending cloudier with time. Very good visibility out of cloud and rain, generally deteriorating.
5C, slight rise in east but will reduce again in showers. Feeling like -5 to -7C in strongest wind.
Above the summits.
Cairngorms NP and Monadhliath
Friday 18th September 2026
Last updated
Wed 16th Sep 26 at
4:00PM
Westerly shifting S-SW'ly 35-45mph, briefly less in morning, then increasing further to 50-60mph during afternoon.
Strenuous conditions in exposure, deteriorating to become more widely difficult with considerable wind chill.
Rain develops afternoon
Light showers drift into Monadhliath & Drumochter hills early in the day, otherwise largely dry until afternoon when patchy rain approaches from the southwest, some extended falls forming later, heavier south.
Breaks for a time, filling in through afternoon
Varied patches of cloud in the morning, mostly near and west of the A9, lifting to largely above 1000m, breaks off Cairngorm summits too. A layer of cloud will lower onto the Cairngorms through afternoon, increasingly filling in, fairly extensively above 900m, lower Drumochter.
50%, lowering to 20%
Patchy sunshine, trending overcast and later dull. Windows of good visibility, a little haze, deteriorating later.
4 or 5C, rising to 7C, and rising slightly further into night. Feeling below 0C in direct wind.
Above the summits.
Cairngorms NP and Monadhliath
Saturday 19th September 2026
Last updated
Wed 16th Sep 26 at
4:00PM
Southwesterly 40 to 55mph, strongest sustained speeds on higher Cairngorms.
Arduous walking conditions, balance frequently challenged on high exposed terrain. Significant wind chill.
Showers mostly west
Showery rain most frequent on hills near and west of the A9 corridor, a mix of drizzle and briefly heavier bursts. More scattered showers toward Lecht and Deeside.
Mostly higher tops with breaks
Banks of cloud confined to higher slopes, lowest toward Ben Alder, 800m for periods. More often above 1000m many areas, lifting further with time, good breaks east.
30% west, to 60% east.
Glimpses of sun west, longer periods of sun east. Visibility good where dry, slight haze especially west, reduced in showers.
6 or 7C, trending slightly cooler later in the daytime. Feeling like -5 to -8C in the wind.
Above the summits.
Sustained gale-force winds continue extensively on the mountains into the weekend, southwesterly turning westerly with time. 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.