フォート・ウィリアムの月別の天気
フォート・ウィリアムを訪れるベストシーズンは5月〜7月です — 5月は88/100、最高16°C、雨の日15日。 ベストな季節は夏(6月〜8月)で、平均84/100です。
最も不向きな月は12月で、49/100です — 寒い、大雨続き、空気がきれい。 12月を見る →
2026年9月更新 · ERA5再解析による気候平年値
周辺も含めて旅を計画するなら イギリス旅行のベストシーズン →
フォート・ウィリアムFort William, United Kingdom🇬🇧 イギリス · イギリス諸島 · トレッキング88
ベストな季節:6月〜8月(平均84/100) · 最も不向きなのは12月(49/100)
- 日中
- 16°C
- 夜
- 7°C
- 雨の日
- 15
- 日照
- 9.6 h
- 湿度
- 79%
- 日の長さ
- 17 h

フォート・ウィリアムの月ごとのようす
フォート・ウィリアムに最も合う旅のタイプでの100点満点の快適スコア、気候平年値による平均最高気温・雨の日数・1日の日照時間、そして混雑具合の目安です。
フォート・ウィリアムの年間イベント
祭り、自然の見どころ、祝日、そして注意したい季節 — 厳選し出典を明記しています。詳しくは各月のページで。
- 2月
- Fort William Mountain Festival2月8日〜20日(例年)祭り
- 3月
- Easter bank holidays4月3日〜6日祝日
- 4月
- West Highland Way season4月1日〜10月15日(例年)季節
- 5月
- Midge season5月25日〜9月15日(例年)要注意
- 6月
- Jacobite steam train season6月1日〜10月23日(例年)オープン
- 9月
- Ben Nevis Race9月5日祭り
- 12月
- Christmas and Boxing Day12月24日〜28日祝日
- Avalanche forecast season12月15日〜4月15日(例年)要注意
- Nevis Range ski season12月20日〜4月15日(例年)季節
5月のフォート・ウィリアムの混雑
その場所自体の混み具合 — 学校休暇や大型連休、編集部がタグ付けした月、そして天気の良さによる人気の高さ。快適スコアには含まれません。
ピークの混雑West Highland Way season、イギリスのLate-May half-term、主な訪問国のうち3か国で学校休暇(推定)
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ピークの混雑混雑ショルダーシーズン閑散
フォート・ウィリアムの旅行者の声
実際に訪れた人たちの声です — 通年のメモを先に、そのあと月ごとに並べています。
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.
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.
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.
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.
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.
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.
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.
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.
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