Lochaber mountain weather forecast.

Ben Nevis, the Mamores and surrounding ranges. Height-aware guidance for wind, cloud, rain and temperature.

Mountain Weather brief

Lochaber

Wednesday 2 September 2026 · Ben Nevis, the Mamores and surrounding ranges

Confidence: High

Why: Clearer summits are favoured, but some forecast models are much cloudier.

What matters most

Mostly dry conditions. A noticeable southwesterly breeze, with cloud coming and going on the tops.

High-ground wind · 900 m15 mph southwesterly Gusts · 900 m20 mph Cloud base1300-1600 m Feels like · 900 m2°C
Regional median

Sunshine and sky

Cloud thickening. The brighter part of the day is likely to come before cloud thickens.

Modelled sunshine9.2 h66% of daylight
Early1.9 h sunshine
Midday4 h sunshine
Later1.2 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.

Morning · 07:00–13:00ExcellentSome early summit cloud is possible.
85/100
Afternoon & evening · 13:00–22:00Mixed
52/100

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

01

High-ground wind (900 m)

Southwesterly around 15 mph at 900 m. Gusts reaching around 20 mph at 900 m, with locally higher values possible on the most exposed tops. Starting nearer 5 mph, then strengthening toward 10 mph later.

02

Walking impact

Noticeable on exposed ground, but unlikely to impede most walking.

03

Ground conditions

The ground is likely to be saturated after recent rain. Expect boggy paths and rapid runoff if more rain arrives.

04

Spate risk

There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Crossing risk is expected from around 22:00, continuing overnight and easing after around 03:00 the following morning. Turn back if a crossing looks unsafe.

05

Rain and showers

Mostly dry.

06

Cloud-free summits

Around 55%. Around 65% early, falling to around 40% later.

07

Cloud and visibility

Cloud bases mostly around 1300-1600 m. Bases should tend to lift as the day goes on. Cloud bases are likely to remain high, but some forecast models are much cloudier, so more extensive summit cloud remains a credible outcome. Cloud is likely to come and go on the higher summits; breaks may be useful but not dependable.

08

Temperature and wind chill

Around 6°C at 900 m, feeling like 2°C in the wind.

09

Freezing level

Above the summits.

10

Daylight

Sunrise 06:23 — Sunset 20:13 — about 13.8 hours daylight.

Overnight · 6 p.m.–9 a.m.Wild campingBetaGusts near 45 mph make sheltered pitches important. 49/100Poor · 600 m View detailsHide details
Regional night beginning Wednesday 2 September 2026

Full regional overnight outlook

Across representative hills, open-hillside camping looks mixed around 600 m (49/100). Open-ground gusts may reach about 45 mph, so sheltered pitches will matter. A wet night is likely, with around 12 mm indicated between pitching and packing up.

Overnight rain12 mmOpen ground · 600 m20 mph · gusts 37 mphMorning pack-upDampness possible
300 m49/100 · mixed
Wind / gust
16 / 30 mph
Coldest
10.4°C
In cloud
Unlikely
Condensation
High
600 m49/100 · mixed
Wind / gust
20 / 37 mph
Coldest
9.8°C
In cloud
25% of night
Condensation
High
900 m44/100 · poor
Wind / gust
23 / 43 mph
Coldest
7.9°C
In cloud
25% of night
Condensation
High

The ground is likely to be very wet after recent rain; expect boggy approaches and choose a durable pitch carefully.

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 & scramblingBetaSome rock may remain damp or still be drying. 50/100Mixed · Mixed View detailsHide details
Across representative exposed-rock terrain

Full regional climbing & scrambling outlook

Conditions for exposed scrambling across the area look mixed (50/100). Some rock may remain damp or incompletely dried, especially in shade and seepage lines. Mapped summit-point geology across the representative hills includes psammite, pelite or semipelite, granite, gneiss or gabbro and volcanic rock; moisture response can therefore vary substantially between crags and routes.

Rock surfaceDamp or dryingExposed gust18 mphRainPossible · 100%
Mapped rock across sampled summits4 broad familiesRepresentative summit samples
psammite, pelite or semipelite 38% 3 representative summitsDry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet.granite, gneiss or gabbro 25% 2 representative summitsGenerally grippy when dry and often still positive when damp, but wet slabs, lichen, polish and drainage lines can remain slippery.volcanic rock 25% 2 representative summitsOften grippy when dry, but volcanic rocks vary widely; wet lichen, smooth holds and local seepage can still make them slippery.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.

Updated 1 September 2026 at 15:33 UTC. See typical weekly and monthly conditions for Lochaber.

Stay near Lochaber.

Use Ben Nevis as a practical starting point for whole-home stays with a useful drive to established walking routes.

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