Northwest Highlands mountain weather forecast.

Wester Ross, Assynt and the far northwest. Height-aware guidance for wind, cloud, rain and temperature.

Mountain Weather brief

Northwest Highlands

Tuesday 20 October 2026 · Wester Ross, Assynt and the far northwest

Confidence: Low Why?

Uncertainty over rain amounts and timing. Uncertainty over high-ground wind strength. Uncertainty over sky cloud cover and sunshine.

What matters most

A mixed day in the Northwest Highlands, with a blustery wind.

High-ground wind · 900 m25-35 mph southwesterly Gusts · 900 m35-45 mph Cloud base1300-2000 m Feels like · 900 m-6 to -2°C
Regional median

Sunshine and sky

Less sunshine later. Sunshine is indicated less often later in the day.

Modelled sunshine5.6 h56% of daylight
Early1 h sunshine
Midday2.1 h sunshine
Later1.3 h 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 20-35 mph. Gusts around 40-50 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges. Summit cloud becomes more persistent later. Rain is possible during the main walking period, but its timing may shift by several hours.
53
Afternoon · 12:00–17:00MixedSummit winds around 20-35 mph. Gusts around 35-45 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges. Rain is possible during the afternoon, but forecast models disagree on whether it will fall. Rain is possible during the main walking period, but its timing may shift by several hours.
52

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 south-westerly wind of 25–35 mph, gusting 35–45 mph. Gusts like that are strong enough to make walking into it hard work, with buffeting on ridges and edges.

02

Walking impact

Gusts of 35–45 mph are strong enough to make walking into it hard work, with buffeting on ridges and edges.

03

Rain and showers

Mostly dry. Rain is possible during the afternoon, but forecast models disagree on whether it will fall. Rain is possible during the main walking period, but its timing may shift by several hours. The timing may shift by a few hours.

04

Cloud-free summits

Clear-summit estimate: about 85% early, about 85% around midday and about 80% later.

05

Cloud and visibility

The tops should stay mostly clear of cloud. The cloud base could be as low as 1000–1300 m mid-morning.

06

Temperature and wind chill

At around 900 m it will be 2 to 6°C, feeling like -6 to -2°C in the wind. It turns milder 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 08:04, Sunset 18:04, about 10.0 hours daylight.

Overnight · 17:00–08:00Wild campingBetaAcross these hills, a mixed night to camp, mainly because of the wind: gusts of about 30 mph. 59Mixed · 600 m View detailsHide details
Regional night beginning Tuesday 20 October 2026

Full regional overnight outlook

Across these hills, a mixed night to camp, mainly because of the wind. Gusts reach about 30 mph on open ground, so peg out well and use the guylines. Look for shelter from the south. A little 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 6°C at 900 m.

Overnight rain0.6 mmOpen ground · 600 m16 mph · gusts 27 mphMorning pack-upDampness possible

Moon overnight

Waxing gibbous moon

Illuminated disc
72%
Moonrise
Outside this window
Moonset
01:34 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: 20 Oct, 17:00 BST to 21 Oct, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Representative location: 57.369, -5.060. Times vary across the area.

300 m64 · mixed
Wind / gust
13 mph / 22 mph
Coldest
8.0°C
In cloud
0% of modelled night
Condensation
Moderate
600 m59 · mixed
Wind / gust
16 mph / 27 mph
Coldest
7.9°C
In cloud
27% of modelled night
Condensation
Moderate
900 m50 · mixed
Wind / gust
18 mph / 31 mph
Coldest
6.5°C
In cloud
73% of modelled night
Condensation
Moderate

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 & scramblingBetaPatchy rain could leave exposed holds damp or slippery. Gusts near 45 mph may affect balance on exposed rock. 26Poor · 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 poor (26/100). Likely to stay mostly dry, but patchy rain remains possible. Exposed rock could become damp or slippery. Gusts may reach about 45 mph on exposed ground, making crosswinds an important route consideration. Mapped summit-point geology across the representative hills includes psammite, pelite or semipelite and sandstone or gritstone. Rock can therefore respond differently to moisture between crags and routes.

Rock surfaceDry initially; rain possibleExposed gust44 mphRainPossible · 40%
Mapped rock across sampled summits2 broad familiesSummit samples, not a survey of every crag
psammite, pelite or semipelite 88% 7 representative summitsDry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet.sandstone or gritstone 12% 1 representative summitUsually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully.

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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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 Northwest Highlands.

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.