Fort William (Ben Nevis) weather by month

The best time to visit Fort William (Ben Nevis) is May to July — 88/100 in May, 16°C and 15 rainy days. The best season is summer, June to August (84/100 on average).

The worst month is December at 49/100 — cold, soaked, clean air. See December →

Updated September 2026 · climate normals from ERA5 reanalysis

Planning the wider trip? Best time to visit United Kingdom →

Fort William🇬🇧 United Kingdom · British Isles · Trekking88
  1. 52Jan
  2. 55Feb
  3. 68Mar
  4. 81Apr
  5. 88May
  6. 86Jun
  7. 85Jul
  8. 80Aug
  9. 76Sep
  10. 64Oct
  11. 60Nov
  12. 49Dec

Best season: June to August (84/100 on average) · worst December (49/100)

Days
16°C
Nights
7°C
Wet days
15
Sun
9.6 h
Humidity
79%
Daylight
17 h
Fort William, United Kingdom
Photo: Sonny Vermeer · Pexels

Fort William, month by month

Comfort score out of 100 for the kind of trip Fort William is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.

MonthScoreTierHighRainSunCrowdsOn
Jan52D7°C18 d2 hBusy2
Feb55D7°C19 d4 hBusy3
Mar68C9°C18 d6 hShoulder3
Apr81A12°C15 d8 hPeak4
May88A16°C15 d10 hPeak2
Jun86A17°C19 d9 hPeak3
Jul85A18°C20 d8 hPeak3
Aug80A18°C21 d8 hPeak3
Sep76B16°C19 d6 hBusy4
Oct64C13°C21 d4 hPeak2
Nov60C9°C17 d3 hShoulder—
Dec49F7°C20 d1 hPeak3

What's on in Fort William through the year

Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.

February
  • Fort William Mountain Festival8–20 Feb (usually)Festival
March
  • Easter bank holidays3–6 AprHoliday
April
  • West Highland Way season1 Apr – 15 Oct (usually)Season
May
  • Midge season25 May – 15 Sep (usually)Hazard
June
  • Jacobite steam train season1 Jun – 23 Oct (usually)Opening
September
  • Ben Nevis Race5 SepFestival
December
  • Christmas and Boxing Day24–28 DecHoliday
  • Avalanche forecast season15 Dec – 15 Apr (usually)Hazard
  • Nevis Range ski season20 Dec – 15 Apr (usually)Season

Everything on in Fort William through the year →

Crowds in Fort William in May

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsWest Highland Way season, Late-May half-term in United Kingdom, school holidays in 3 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Traveller notes on Fort William

What people who have been say about the place — the year-round notes first, then month by month.

Fort William-forum threads on climbing Ben Nevis in winter describe real snow as likely above roughly two thousand feet, posters calling deep cover common by January even when the town sees none. Regulars call the mountain's weather its own separate beast, Fort William basking in sunshine while the summit sits shrouded in mist with near-zero visibility or a real storm. Posters call daylight genuinely limited, climbers heading up over the holidays sometimes caught out after dark. Regulars recommend real cold-weather layers and boots regardless of the town's look, conditions capable of turning cold and wet with little warning. Posters recommend proper winter mountaineering experience or a guide for a real summit try. Regulars call the town still worth a winter visit even without summiting, the loch and lower glens rewarding regardless of the Ben. The record: 6.5C days feeling like 3C, 1.3C nights, an extraordinarily high 182.4mm across over 18 days and 93 percent humidity.
FortWilliamJanuaryRegular · January · 1 month ago · Read more on Tripadvisor ↗
Fort William-forum threads on climbing Ben Nevis in February describe summit snow cover as genuinely patchy some years rather than a full white-out, conditions varying considerably winter to winter. Posters call the summit clear of cloud only around sixty days a year, most winter attempts facing real cloud and limited visibility. Regulars recommend full winter mountaineering gear and real experience for a February attempt, the standard walking track treated very differently once real accumulation and ice set in higher up. Posters describe the Highlands as genuinely soaked this time of year, frequent systems rolling in off the Atlantic keeping the ground saturated even at lower elevations. Regulars call daylight hours short enough in February that an early start is essential. Posters recommend a guide for anyone without real winter mountain experience. The record: 7.1C days feeling like 4C, 1.8C nights, an extraordinarily high 207.8mm across nearly 19 days and 90 percent humidity.
FortWilliamFebruaryRegular · February · 1 month ago · Read more on Tripadvisor ↗
Fort William-forum threads on a March visit describe Ben Nevis as genuinely still holding considerable snow and ice from around seven hundred meters up, posters naming this a factor for anyone planning a summit attempt. Regulars call the summit plateau's major snow cover genuinely lasting well into May, several posters naming this why March conditions still feel deep winter at altitude. Posters call the Mountain Path genuinely the only route appropriate for inexperienced visitors, several regulars naming this standard advice given how technical other routes become. Regulars call clear weather genuinely essential before attempting even the standard path, several threads warning conditions can turn dangerous fast above the snowline. Posters recommend real winter mountaineering gear for a March attempt, several regulars calling this standard given how much snow remains. The record: 9C days, 2.1C nights, an extraordinarily high 146.9mm across 18 days and 86 percent humidity.
FortWilliamMarchRegular · March · 1 month ago · Read more on Tripadvisor ↗
Early May is about the last of Fort William's midge-free window - they do not normally get going until late May or June and the blanket hatches wait for summer, though regulars note they have been starting earlier year on year. Ben Nevis is a separate problem. In May most of the path is clear but there are still snowfields on the summit and ice in the sheltered places, and reports describe a sunny start turning, three-quarters of the way up, into poor visibility, real cold and deep snow. Midges do not like height, so the hill is the one place you are safe from them whatever the month. The record: 15.6C days that feel like 14C, 7C nights, 14.6 precipitation days carrying 104.2mm, 9.6 hours of sun and a 16.5-hour day.
SnowfieldsOnTheSummit · May · 1 month ago · Read more on Tripadvisor ↗
Fort William's forum calls June probably the best month to visit, though genuinely changeable — mid-50s°F mornings warming to mid-60s by afternoon, occasionally needing central heating overnight even in summer. Regulars note the west coast here gets roughly 1.5 meters of rain a year, among Scotland's wettest, so a full waterproof layer over shorts-and-t-shirt weather is the standard packing advice.
Tripadvisor community · June · 1 month ago · Read more on Tripadvisor ↗
Fort William-forum threads on August Ben Nevis climbs are direct conditions run genuinely warm-adjacent but rarely stay clear and sunny for a full day, one poster describing a bright morning turning overcast by lunch with the cloud base dropping to around 2,000 feet before a real thunderstorm rolled through mid-afternoon. Regulars are consistent the summit runs its own weather system entirely separate from town, gale-force wind and near-zero visibility all genuinely possible up top even while Fort William itself basks in a clear, pleasant morning. Posters call the wind chill at the summit a real factor worth respecting regardless of how the ascent felt, several describing feeling properly chilled the moment they stopped moving at the top. Full waterproof layers, a map and compass, and a realistic turnaround time are standing advice for any August attempt. The record: 18C days feeling like 17C, 11C nights, an extraordinarily high 165mm across over 21 days and 86 percent humidity.
BenNevisAugustRegular · August · 1 month ago · Read more on Tripadvisor ↗
Fort William-forum threads on a September visit describe the town center as genuinely fine despite mixed online reputation, posters calling it a practical base rather than a destination in its own right. Regulars call renting a car locally worth arranging ahead if planning to reach Skye or the north coast, one-way rentals noted as something local companies aren't well set up for. Posters describe a Sunday visit in late September as quiet, several shops catering to backpackers and climbers closed for the day regardless of season. Regulars call real waterproof layers essential regardless of forecast, September conditions here shifting fast between sun and a genuine downpour. Posters recommend booking accommodation ahead through the usual platforms, several regulars naming standard booking sites as reliable for September stays. The record: 15.8C days feeling like 16C, 8.9C nights, an extraordinarily high 161.6mm across nearly 19 days and 79 percent humidity.
FortWilliamSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗
Forum posters are blunt that December can be cold, windy and genuinely miserable, with wet and grey conditions common away from the town center - though posters are equally clear conditions swing wildly, with a crisp, clear, frosty day entirely possible within the same week as a washout. Daylight is the real practical constraint posters flag: full daylight runs roughly 9am to 3pm this time of year, a hard limit on how much outdoor sightseeing fits into a day. For anyone hoping for snow specifically, posters name Fort William - along with Aviemore and Glenshee - as among Scotland's better December bets, since snow chances generally rise with latitude and elevation, though recent years have trended more rainy and windy than snowy even here.
Tripadvisor community · December · 1 month ago · Read more on Tripadvisor ↗

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