セントジョンズ 8月の天気
セントジョンズの8月:快適、ときどき雨、空気がきれい — 一年で最も訪れやすい月のひとつ。
2026年9月更新 · ERA5再解析による気候平年値
セントジョンズでは12か月中2位 · 8月に訪れたい旅行先で1413か所中346位 · 快適スコア88/100(Aランク)
- 日中
- 23°C
- 夜
- 12°C
- 雨の日
- 10
- 日照
- 8.7 h
- 湿度
- 81%
- 日の長さ
- 14 h

8月のセントジョンズについての旅行者の声
Newfoundland's forum calls late July into August the best chance for good weather, typically around 20°C but genuinely variable — anything from a cool, wet day to full sun. Regulars are consistent that Newfoundland is rarely hot and often feels cooler than the number suggests thanks to the wind, so a rain coat and layers matter more than a summer wardrobe.
セントジョンズのほかの月
Regulars are direct that this is the rainiest month of the year here, occasionally worsened by the remnants of a hurricane or tropical storm pushing in extra rain, and specifically recommend the first ten days as the sweet spot before it turns cooler and the odds of snow climb. Our row backs that cool, genuinely wet read, 13.1C over 4.1C nights feeling 0C, with 84.2mm of rain across 9.8 days and a trace of early snow, 0.1cm. Regulars are consistent the city itself stays fully in swing for visitors even as some seasonal attractions wind down, Signal Hill's visitor center specifically closing around the 10th of the month. The sea sits at a cold 9.4C. The record: humidity 80 percent, 5.6 hours of sun, a 26.1 kph wind and AQI 34.
May here is rain, wind and fog, and regulars say the variation is the real story: one day near freezing, the next 15C. Our row averages 11.7C but reads as 8C, with nights at 1.4C feeling like -3C in a 25 kph wind, 73.7mm across 11.6 days, and 2.1cm still sitting in the snow column. A hooded coat, because the rain and sleet here travel sideways, and a sweater underneath it. Icebergs are why many people come and nobody on the board will promise them: they drift on currents and pack ice, they turn up any time from March into July, and mid to late May is a good bet rather than a safe one. Dress for the boat - the sea is 1.5C. The record: humidity 80 percent, 8.6 hours of sun and AQI 35.
September is one of the better months for weather here and the worst trade you can make for wildlife. The fog thins - this city averages 124 fog days a year, but they are far fewer after mid-July - and the coast clears. The icebergs, though, run March to about July, so late September offers little or no chance of one, and the puffins and whales are thinning too, with the humpbacks starting their move to calving grounds. Our row gives 18.3C days over 8.7C nights that feel like 6C, a 25.3 kph wind and a 12.9C sea. The record: 90.9mm across 10.2 days, 7.3 hours of sun and AQI 36.
June in St John's has a local name for its fog - capelin weather - blanket fog that can sit for days, and regulars are honest that it is the month's one real drawback in a month that is not warm to begin with. Our row gives 17.9C by day feeling like 16C, 7.1C at night, and a 4.5C sea. After mid-July it is less common. The trade they offer in exchange is the reason to come at all: the same capelin run brings the whales, and June is prime iceberg season, though the bergs that reach St John's, Bay Bulls and Ferryland have melted small by the time they get this far south. Mid-June averages nearer 18C by day and 12 at night. The record: 11.2 precipitation days carrying 81.4mm, humidity 84 percent and a 23.8 kph wind.
地図のセントジョンズのカードから自分のメモを追加できます。
セントジョンズの気候平年値 — 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月のセントジョンズの混雑
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George Street Festival、Royal St John's Regatta、カナダのSummer break(推定)
ピークの混雑混雑ショルダーシーズン閑散
セントジョンズの天気が良い月
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)。
天気が最高セントジョンズの天気がピークを迎えるのは6月〜8月で、特に良いのは7月ごろです。
8月にはPuffins at Witless Bayがあります。
天気が最高天気はまずまず天気が厳しい
8月のセントジョンズのイベント
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。
- 自然
Puffins at Witless Bay
5月15日〜8月15日 · 例年野鳥シーズンHundreds of thousands of puffins and murres nest on the islands half an hour south of town, reachable on a two-hour boat that usually finds whales on the same trip.
- 自然
Humpbacks and the capelin roll
6月1日〜8月31日 · 例年ホエールシーズンHumpbacks follow the capelin inshore in June and stay through the summer. The capelin themselves spawn onto the beaches in a few days somewhere around the turn of July, and people fill buckets.
- 祭り
George Street Festival
7月29日〜8月5日 · 例年音楽祭混雑A week of outdoor concerts on a two-block street that is nothing but bars, ending the night before the Regatta. The two are planned as one long week here. 出典 ↗
- 祭り
Royal St John's Regatta
8月3日〜9日 · 例年スポーツイベント休業混雑Fixed-seat rowing on Quidi Vidi Lake on the first Wednesday of August, and the only civic holiday in the country decided by a wind call at six in the morning. If it blows, everyone goes to work. 出典 ↗
セントジョンズはどこにある?
8月のセントジョンズ — よくある質問
- 8月はセントジョンズを訪れるのに良い時期ですか?
- セントジョンズの8月:快適、ときどき雨、空気がきれい — 一年で最も訪れやすい月のひとつ。SeasonMapの快適スコアでは、セントジョンズの12か月中2位です(88/100)。
- 8月のセントジョンズはどんな天気ですか?
- 8月のセントジョンズは、平均最高気温22.6°C、最低気温11.9°C、降水量は約77.6 mmで、雨の日はおよそ10.2日です。
- 8月のセントジョンズの大気質はどうですか?
- 8月のセントジョンズの米国大気質指数(US AQI)は、平均約36です。