ニセコ町 8月の天気
ニセコ町の8月:暑い、大雨続き、空気がきれい — おすすめできない時期(雨の日15日)。
2026年9月更新 · ERA5再解析による気候平年値
ニセコ町では12か月中12位 · 8月に訪れたい旅行先で1413か所中1411位 · 快適スコア11/100(Fランク)
- 日中
- 27°C
- 夜
- 18°C
- 雨の日
- 15
- 日照
- 8.5 h
- 湿度
- 87%
- 日の長さ
- 14 h

8月のニセコ町についての旅行者の声
ニセコ町のほかの月
Niseko-forum threads on an April visit describe Niseko Village and Hanazono as genuinely closing early in the month, posters naming Annupuri and Hirafu as staying open considerably longer into early May instead. Regulars call snow genuinely slushy by early April, several posters naming more than half the lifts possibly shut with precipitation falling as rain once temperatures warm. Posters call the village genuinely quieter from mid-March, several regulars naming restaurants and bars closing for the season as a real sign of the shift. Regulars call basing at Grand Hirafu genuinely the smart move for a late-April trip, several threads naming this the reason to avoid areas that shut down earlier. Posters recommend checking exact lift status per area before an April trip, several regulars calling this standard given how much closing dates vary across Niseko's zones. The record: 11.4C days, 0.6C nights, an extraordinarily high 80.1mm across over 12 days and 79 percent humidity.
Niseko-forum threads on a May visit describe most major resorts as closing by early May, posters citing specific dates like May sixth for Niseko Village, Grand Hirafu and Annupuri, with Nakayama Toge sometimes extending to the tenth or later on weekends. Regulars call river canoeing and kayaking real alternatives once the lifts stop running, a genuine option for anyone still wanting an active trip. Posters recommend checking accommodation and dining options directly, several businesses shifting to reduced schedules once the resort closes for the season. Regulars call real layers still sensible for May evenings despite daytime warmth, mountain air here cooling fast after dark. Posters recommend combining a May stay with a wider Hokkaido itinerary rather than basing the trip around Niseko, activity options here considerably thinner than during ski season. The record: 18.3C days feeling like 18C, 6.9C nights, an extraordinarily high 84.3mm across over 12 days and 71 percent humidity.
Niseko-forum threads on a June visit describe the higher peaks, Mount Yotei specifically, as still capable of holding a bit of white cover on the top early in the month, posters calling this a holdover from winter rather than anything fresh. Regulars call June through October broadly the strongest stretch for summer activity, rafting a real highlight given the meltwater still feeding the rivers. Posters describe the town as considerably quieter than winter, real space on trails and rivers crowded during peak resort season. Regulars call horseback riding, kayaking and farm tours reasonable additions for families visiting nearby Toya. Posters recommend real layers for cooler mornings, evenings at this elevation carrying a genuine chill. Regulars call the wider area worth the trip regardless of season, summer offering a different character. The record: 21.6C days feeling like 23C, 12.2C nights, an extraordinarily high 115.3mm across nearly 12 days and 84 percent humidity.
Niseko-forum threads on skiing in March describe conditions as genuinely still strong most years, a regular who worked six winters here recalling a consistently good base holding through the month with fresh powder arriving every few days some seasons. Posters call overnight readings still capable of dropping to negative double digits Celsius even as daytime temperatures edge toward single digits. Regulars describe a warmer stretch as capable of turning the snow heavy and slushy at lower elevations, the upper mountain generally staying in better shape longer. Posters recommend checking current conditions rather than assuming based on the calendar, March here swinging between blue-sky powder days and a wetter, warmer system. Regulars call the thinner March crowds a genuine upside over the January-February peak. The record: 4.8C days feeling like 1C, -4.9C nights, a notably high 34.3cm of fresh accumulation and 81 percent humidity.
地図のニセコ町のカードから自分のメモを追加できます。
ニセコ町の気候平年値 — 8月
ERA5再解析による月平均値です。AQIはその月の平均US AQI(米国大気質指数)です。
8月のニセコ町の混雑
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。
混雑日本のSummer break (natsuyasumi)、主な訪問国のうち3か国で学校休暇(推定)
ピークの混雑混雑ショルダーシーズン閑散
ニセコ町の天気が良い月
この旅行先自身の一年間の快適スコアでランキングしています — 混み具合とは別のものです(上の「混雑」を参照)。
天気が厳しいニセコ町の天気がピークを迎えるのは12月〜2月で、特に良いのは1月ごろです。
天気が最高天気はまずまず天気が厳しい
8月のニセコ町のイベント
毎年の季節のイベント、自然の見どころ、休業、祝日 — 厳選し出典を明記しています。
- 季節
Summer season
7月1日〜9月30日 · 例年トレイルシーズンMount Yotei is climbed from July, the rafting on the Shiribetsu runs earlier on snowmelt, and the village runs at a third full for a third of the winter price.
近くで開催中のイベント
ニセコ町から300 km以内 — 日帰りやちょっとした移動で行けて、今月何かがある場所です。快適スコアには含まれません。
ニセコ町はどこにある?
8月のニセコ町 — よくある質問
- 8月はニセコ町を訪れるのに良い時期ですか?
- ニセコ町の8月:暑い、大雨続き、空気がきれい — おすすめできない時期(雨の日15日)。SeasonMapの快適スコアでは、ニセコ町の12か月中12位です(11/100)。
- 8月のニセコ町はどんな天気ですか?
- 8月のニセコ町は、平均最高気温26.5°C、最低気温17.8°C、降水量は約181.8 mmで、雨の日はおよそ15.4日です。
- 8月のニセコ町の大気質はどうですか?
- 8月のニセコ町の米国大気質指数(US AQI)は、平均約28です。
300 km圏内:SapporoのOdori beer garden(7月23日〜8月18日)。