Cairngorms mountain weather forecast.

The Cairngorm plateau and eastern high tops. Height-aware guidance for wind, cloud, rain and temperature.

Mountain Weather brief

Cairngorms

Saturday 17 October 2026 · The Cairngorm plateau and eastern high tops

Confidence: Unavailable Why?

A comparable model-confidence estimate is not available for this forecast.

What matters most

A good day in the Cairngorms, though expect sleet or snow up high.

High-ground wind · 900 m15-25 mph northwesterly Gusts · 900 m20-30 mph Cloud base1000-1300 m Feels like · 900 m-6 to -2°C
Regional median

Sunshine and sky

Cloud becoming more extensive. Cloud cover is likely to increase as sunshine becomes less frequent.

Modelled sunshine7.1 h64% of daylight
Early2 h sunshine
Midday3.7 h sunshine
LaterLess than 1 hour sunshine

These are direct modelled sunshine hours during daylight, not the probability of sunshine. Cloud cover and summit cloud are assessed separately in the forecast above. The regional median prevents one unusually bright or dull summit cell defining the whole area.

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00ExcellentSummit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground.
91
Afternoon · 12:00–17:00MixedSummit winds around 10-20 mph. Gusts around 15-25 mph are possible on exposed ground. Summit cloud becomes more persistent later. Rain is forecast on some hills during this period.
66

Conservative regional grades across representative summits, so one sheltered hill does not overstate the wider area.

01

High-ground wind (900 m)

At around 900 m, expect a north-westerly wind of 15–25 mph, gusting 20–30 mph, strongest first thing and easing later. A wind like that will be noticeable on ridges and open tops, and you will chill quickly when you stop.

02

Walking impact

A steady wind of 15–25 mph will be noticeable on ridges and open tops, and you will chill quickly when you stop.

03

Rain and showers

A band of sleet crosses in the early afternoon, clearing by mid-afternoon. Expect up to 2 mm in total, measured as melted water, so any snow would lie deeper. Drizzle is possible on some hills. On some hills, sleet is possible on the tops. Small temperature changes could shift the mix towards rain or snow.

04

Cloud-free summits

Clear-summit estimate: about 90% early, about 45% around midday and about 35% later.

05

Cloud and visibility

The tops are likely to drift in and out of cloud, with the best chance of clear tops early in the morning. The cloud base could be as low as 1100–1400 m in the early afternoon.

06

Temperature and wind chill

At around 900 m it will be 0 to 4°C, feeling like -6 to -2°C in the wind. Take a hat, gloves, a windproof and a spare warm layer. Pack waterproofs too, and keep a warm layer dry in your pack.

07

Freezing level

The freezing level is close to summit height.

08

Daylight

Sunrise 07:51, Sunset 18:07, about 10.3 hours daylight.

Overnight · 17:00–08:00Wild campingBetaAcross these hills, a mixed night to camp, mainly because of the cold: dry, with light winds. 59Mixed · 600 m View detailsHide details
Regional night beginning Saturday 17 October 2026

Full regional overnight outlook

Across these hills, a mixed night to camp, mainly because of the cold. Light winds on open ground, gusting no more than about 15 mph. It should stay dry. A cold night, down to about 3°C around 900 m.

Overnight rain0.0 mmOpen ground · 600 m4 mph · gusts 14 mphMorning pack-upNo wet signal

Moon overnight

Waxing crescent moon

Illuminated disc
44%
Moonrise
Outside this window
Moonset
21:22 BST

Cloud and terrain vary across the area. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 17 Oct, 17:00 BST to 18 Oct, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Representative location: 57.070, -3.669. Times vary across the area.

300 m59 · mixed
Wind / gust
4 mph / 12 mph
Coldest
4.1°C
In cloud
0% of modelled night
Condensation
Low
600 m59 · mixed
Wind / gust
4 mph / 14 mph
Coldest
4.1°C
In cloud
0% of modelled night
Condensation
Low
900 m59 · mixed
Wind / gust
5 mph / 16 mph
Coldest
3.0°C
In cloud
0% of modelled night
Condensation
Low

Open-hillside guidance across representative hills. Local shelter, ridges, tent design and the exact pitch can change conditions substantially. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Daytime · exposed rockClimbing & scramblingBetaSub-zero temperatures and moisture may leave icy patches on exposed rock. Wet rock is likely. 17Poor · Very poor View detailsHide details
Regional rock conditions · sampled mountain terrain

Regional climbing & scrambling outlook

A broad guide to dampness and exposed rock across the area, not a forecast for every crag. Lower, sheltered crags and individual rock types may behave differently.

Conditions for exposed scrambling across the area look very poor (17/100). Rain is likely to leave rock wet. Polished slabs, vegetation and drainage lines may be notably worse. Mapped summit-point geology across the representative hills includes granite, gneiss or gabbro. Rock can therefore respond differently to moisture between crags and routes.

Rock surfaceWet rock likelyExposed gust24 mphRain0.6 mm
Mapped rock across sampled summits1 broad familySummit samples, not a survey of every crag
granite, gneiss or gabbro 100% 8 representative summitsGenerally grippy when dry and often still positive when damp, but wet slabs, lichen, polish and drainage lines can remain slippery.

Representative summit-point samples across the region; individual crags and routes may differ.

Generic exposed hands-on-rock terrain across representative summits; mapped summit-point geology is a broad regional sample, not a named-route survey. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

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Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Cairngorms on Saturday 17 October 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

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Weather data: Open-Meteo (CC BY 4.0). Adapted by Mountain Weather.

Updated 12 October 2026 at 15:29 UTC. See typical weekly and monthly conditions for Cairngorms.

More context for your hill day

Check the approach as well as the tops

Compare midge conditions by day and height, or look for a possible cloud inversion. For Snowdon and Tryfan, camera-derived cloud-base observations add a view of conditions already seen on the slopes.