ミネアポリス 8月の天気
ミネアポリスの8月:暖かい、雨が多い、空気がきれい — 訪れるのにとても良い時期。
2026年9月更新 · ERA5再解析による気候平年値
ミネアポリスでは12か月中5位 · 8月に訪れたい旅行先で1413か所中743位 · 快適スコア78/100(Bランク)
- 日中
- 27°C
- 夜
- 17°C
- 雨の日
- 10
- 日照
- 10.8 h
- 湿度
- 70%
- 日の長さ
- 14 h

8月のミネアポリスについての旅行者の声
Regulars describe a real air-mass swing that defines this month: a hot, humid flow from the south can feel almost tropical, then switch quickly to cool, dry air from the northwest - genuinely two different summers within the same week. Our row backs the warm, humid average sitting between those extremes, 26.7C reading as a hot 28C at 70 percent humidity, over 17C nights, with a real 139.1mm of rain across 10.1 days. Regulars are specific that rain here usually arrives as a brief thunderstorm line marking one of those air-mass changes rather than settling into a multi-day soak, and that mosquitoes become a real presence through this muggier stretch of summer. Visitors from a hotter, more humid climate consistently find the overall summer here comfortable by comparison. The record: 10.8 hours of sun, a 15.5 kph wind and AQI 49.
ミネアポリスのほかの月
Summer here is two air masses taking turns, and regulars describe the swap: almost tropical air from the south, then a quick change to cool dry air from the north-west, with the heat at its worst from mid-July into early August. Our row averages 28.4C reading as 30C over 18.3C nights at 67 percent humidity, with 86.7mm of rain across 7.9 days and 12.5 hours of sun. On the other summer question they are calmer than visitors expect: mosquitoes drop off considerably by July, they depend on how wet the spring was, and wind and open water keep them down - which is an argument for the lakes rather than against them. The record: a dew point of 16.1C and AQI 58.
Regulars are blunt that May here is a tossup rather than a forecast: mid-month can be in the sixties and seventies by day or in the forties and fifties, and early May can still turn cold and snowy. Our row averages 20.6C over 9.8C with 0.1cm of snow - a trace, which is what a small chance of a late flurry looks like averaged over thirty years. Their advice is layers plus a light jacket, so a warm afternoon does not overheat you and the evening does not catch you out. The lakes in the uptown chain - Bde Maka Ska, Isles and Harriet - rent kayaks and canoes and are walkable all the way round, and mid-May is when the trees finally go green. Rain is 106.6mm across 9 days. The record: humidity 63 percent, 10.4 hours of sun inside 14.9 of daylight, and AQI 49.
June arrives just after the first hatch of black flies and mosquitoes, which regulars date to around Memorial Day weekend, so the bugs are a real part of the month - along with ticks. How bad depends on how wet it has been, and our row's 105.4mm is the wet side of that. Their working rules are the useful part: mosquitoes do not fly well in wind and do not like bright sun, so daylight hours in the open are usually fine, and a breeze off one of the lakes does the job on its own. Dusk and early morning are when the spray earns its place. On heat, June is before the peak - they put that at mid-July into early August - though summer here swings between almost tropical air from the south and cool dry air from the northwest inside a day. The record: 26.7C over 16.1C, 12.1 hours of sun and AQI 59.
Minneapolis forum threads describe January as genuinely brutal, with posters citing daytime highs that can stay below freezing for stretches and nights regularly dropping below 0F, sometimes cold enough that it's described as taking your breath away outdoors. Snow and ice on the roads are a given, with occasional blizzards, and the city's below-zero cold snaps were described as more of a January-February phenomenon than earlier in winter. The consistent advice was serious layering - a proper heavy coat, gloves and hat - plus using the extensive downtown indoor Skyway system to move between buildings without facing the outdoor cold directly; posters also pointed to real winter activities like snow tubing, ice skating and cross-country skiing as reasons the season stays worth visiting despite the harsh conditions.
地図のミネアポリスのカードから自分のメモを追加できます。
ミネアポリスの気候平年値 — 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月のミネアポリスの混雑
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Minnesota State Fair、アメリカ合衆国のSummer break、主な訪問国のうち2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
ミネアポリスの天気が良い月
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)。
天気はまずまずミネアポリスの天気が最も良いのは5月、6月、9月です — ひと続きのシーズンではなく、別々の時期です。
天気が最高天気はまずまず天気が厳しい
8月のミネアポリスのイベント
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。
- 祭り
Minnesota State Fair
8月27日〜9月7日大きな祭り混雑早めの予約をTwelve days ending on Labor Day, on its own permanent grounds between the two cities, and one of the best-attended fairs in the country. Two million people through the gates and everything served on a stick. 出典 ↗
ミネアポリスはどこにある?
8月のミネアポリス — よくある質問
- 8月はミネアポリスを訪れるのに良い時期ですか?
- ミネアポリスの8月:暖かい、雨が多い、空気がきれい — 訪れるのにとても良い時期。SeasonMapの快適スコアでは、ミネアポリスの12か月中5位です(78/100)。
- 8月のミネアポリスはどんな天気ですか?
- 8月のミネアポリスは、平均最高気温26.7°C、最低気温17°C、降水量は約139.1 mmで、雨の日はおよそ10.1日です。
- 8月のミネアポリスの大気質はどうですか?
- 8月のミネアポリスの米国大気質指数(US AQI)は、平均約49です。