Cairngorms mountain weather forecast.

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

Mountain Weather brief

Cairngorms

Wednesday 21 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 mixed day in the Cairngorms: breezy, with clear tops for most of the day.

High-ground wind · 900 m15-25 mph southerly Gusts · 900 m20-30 mph Cloud base800-1300 m Feels like · 900 m-2 to 2°C
Regional median

Sunshine and sky

Sunshine and cloud. A mixture of sunshine and cloud is indicated.

Modelled sunshine3.5 h39% of daylight
EarlyLess than 1 hour sunshine
Midday1.9 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 · 08:00–12:00MixedSummit winds around 15-25 mph. Gusts around 25-35 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later. Rain is forecast on some hills during this period. Some forecast models bring rain during the morning, while others keep it mostly dry.
62
Afternoon · 12:00–17:00MixedSummit winds around 15-25 mph. Gusts around 30-40 mph are possible on exposed ground. Rain is forecast on some hills during this period. Summit cloud is more likely to break later.
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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 southerly wind of 15–25 mph, gusting 20–30 mph. 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

Drizzle sets in during the early afternoon. Some forecast models bring rain during the morning, while others keep it mostly dry.

04

Cloud-free summits

Clear-summit estimate: about 40% early, about 80% around midday and about 90% later.

05

Cloud and visibility

The tops should stay mostly clear of cloud. The cloud base could be as low as 500–800 m in the late afternoon. Mist or fog is possible in some valleys early on. It will look largely cloudy overhead, but that cloud should mostly stay above the tops. It looks hazy, so views may be limited even when the tops are clear.

06

Temperature and wind chill

At around 900 m it will be 2 to 6°C, feeling like -2 to 2°C in the wind. It turns colder through the day. Take a hat, gloves, a windproof and a spare warm layer.

07

Freezing level

The freezing level is above the summits.

08

Daylight

Sunrise 07:59, Sunset 17:57, about 9.9 hours daylight.

Overnight · 17:00–08:00Wild campingBetaToo windy for an exposed pitch up around 900 m on some hills (gusts of about 45 mph and about 5 mm of rain). Lower down, a mixed night to camp, mainly because of the wind. 39Poor · 600 m View detailsHide details
Regional night beginning Wednesday 21 October 2026

Full regional overnight outlook

Too windy for an exposed pitch up around 900 m on some hills. Lower down, a mixed night to camp, mainly because of the wind. Gusts reach about 45 mph around 900 m and nearer 30 mph around 300 m, enough to damage a tent on open ground. Check the forecast for the hill and height you have in mind, and don't assume lower ground will be sheltered. About 5 mm of rain is forecast overnight. Above about 600 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. Overnight lows of about 3°C at 900 m.

Overnight rain5.4 mmOpen ground · 600 m18 mph · gusts 38 mphMorning pack-upDampness possible

Moon overnight

Waxing gibbous moon

Illuminated disc
80%
Moonrise
Outside this window
Moonset
02:54 next morning BST

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

Overnight window: 21 Oct, 17:00 BST to 22 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 m57 · mixed
Wind / gust
15 mph / 32 mph
Coldest
5.9°C
In cloud
0% of modelled night
Condensation
High
600 m39 · poor
Wind / gust
18 mph / 38 mph
Coldest
5.5°C
In cloud
68% of modelled night
Condensation
High
900 m19 · very poor
Wind / gust
21 mph / 45 mph
Coldest
3.3°C
In cloud
78% of modelled night
Condensation
High

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 & scramblingBetaWet rock is likely. 46Poor · Mixed 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 mixed (46/100). Rain is likely to leave rock wet. Polished slabs, vegetation and drainage lines may be notably worse. Gusts may reach about 25 mph on exposed ground, making crosswinds an important route consideration. 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 gust26 mphRain0.7 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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This is about Cairngorms on Wednesday 21 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 15 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.