ニューキー 9月の天気
ニューキーの9月:快適、雨が多い、空気がきれい — 訪れるのに良い時期。
2026年9月更新 · ERA5再解析による気候平年値
ニューキーでは12か月中6位 · 9月に訪れたい旅行先で1413か所中989位 · 快適スコア68/100(Cランク)
- 日中
- 18°C
- 夜
- 13°C
- 雨の日
- 15
- 日照
- 8 h
- 湿度
- 82%
- 日の長さ
- 13 h

9月のニューキーについての旅行者の声
Regulars are specific the local saying here is "we get a lot of weather," genuinely capable of turning warm and sunny or wet and cool within the same week, settled spells the exception rather than the rule. Our row backs that mild, genuinely wet read, 18C over 12.7C nights feeling 11C, with a substantial 99.5mm of rain across 14.5 days and a real 25.7 kph wind. Regulars are consistent if one coast of the peninsula looks poor, the other side can look completely different, with several long-time residents specifically rating this month as more reliably pleasant than June despite that reputation. Forecasting more than a few days out here is treated as genuinely pointless. The sea sits at 16.8C. The record: 8 hours of sun, humidity 82 percent and AQI 44.
ニューキーのほかの月
Regulars are specific that this month suits surfers of every level, with genuinely fewer people in the water than a typical Tuesday in the busy summer months - a real trade for the colder water. Our row backs the cold spring read, 13.1C over 6.9C nights feeling 3C, with 63.5mm of rain across 11.9 days and a real 24.7 kph wind, against a properly cold sea at 10.8C, wetsuit territory regardless of the air. Regulars also flag that Cornwall's weather is notoriously localized, recommending checking a dedicated local forecast or radar rather than a generic regional one before planning a surf session. The record: humidity 78 percent, 10.1 hours of sun and AQI 45.
Regulars put April and May among the best weeks here and warn in the same breath that Cornish weather is local and unreliable - two beaches a few miles apart can have different days, and the forecast is pot luck. Our row gives 16C afternoons that feel like 14C in a 23 kph wind, 9.5C nights, and 54.1mm across 9.7 days. The water is the part visitors misjudge: the sea reaches 12.4C this month and rarely passes 18C even in summer, so a wetsuit is not optional at Fistral, it is the equipment. What May does have is light, 15.5 hours of it with 11.3 of sun, and beaches that are not yet full. The record: humidity 79 percent and AQI 45.
June is the month Newquay regulars name for coming before the crush: the schools break up in mid-July, so this is the last stretch of summer weather without them, and September after they go back is the other one. It is already peak season for booking, though, so beds go early. On surf they are positive - mid-June waves can be properly rough and the water busy with surfers - and the local habit is to check a surf forecast rather than a weather one, magicseaweed or windguru alongside the usual. Our row's 18.4C reads as 17C and the sea is 16.6C, so this is a wetsuit month whatever the sky does. The record: 12.4C nights, 74.3mm across 12 precipitation days, 11.2 hours of sun, a 22.8 kph wind and 16.4 hours of daylight.
July in Newquay is Cornwall's usual bargain: unpredictable weather in exchange for the best of the coast. Regulars will not promise beach heat - some Julys are boiling, others are not - and the sea is cold enough that hiring a wetsuit at Fistral is normal rather than cautious. Our row puts it at 16.6C. On crowds the split is by hour and by term: school holidays fill the town and the parking, and early morning is the time regulars name for clean conditions and space. Fistral's summer surf is a consistent one-to-four-foot break, which is why every learner in the county is on it. The record: 19.9C days that feel like 19C, 14C nights, 11.8 precipitation days carrying 63mm, 11.2 hours of sun and a 23 kph wind.
地図のニューキーのカードから自分のメモを追加できます。
ニューキーの気候平年値 — 9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。
9月のニューキーの混雑
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English school holidays、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
ニューキーの天気が良い月
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)。
天気はまずまずニューキーの天気がピークを迎えるのは6月〜8月です。
天気が最高天気はまずまず天気が厳しい
9月のニューキーのイベント
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。
- オープン
Lifeguarded beach season
5月1日〜9月30日 · 例年夏季営業スタートリスクThe main beaches are patrolled from about May to the end of September and unpatrolled either side, when the rips at Fistral and Crantock are the same but nobody is watching them. 出典 ↗
- 祝日
English school holidays
7月18日〜9月1日混雑早めの予約をThe A30 into Cornwall backs up on changeover Saturdays and the town runs at capacity for six weeks. Car parks above the beaches fill before ten. 出典 ↗
- 季節
Sea at its warmest
8月1日〜9月30日 · 例年泳げる海水温The water lags the air by about two months, so late August into September is the best of it. Most people still put on a wetsuit, and the ones who do not do not stay in long.
- 季節
Atlantic swell season
9月15日〜4月15日 · 例年サーフシーズンFistral works properly when the autumn and winter groundswells arrive; the summer that everyone visits for is the flattest, most crowded water of the year. Wetsuits all twelve months.
近くで開催中のイベント
ニューキーから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。
ニューキーはどこにある?
9月のニューキー — よくある質問
- 9月はニューキーを訪れるのに良い時期ですか?
- ニューキーの9月:快適、雨が多い、空気がきれい — 訪れるのに良い時期。SeasonMapの快適スコアでは、ニューキーの12か月中6位です(68/100)。
- 9月のニューキーはどんな天気ですか?
- 9月のニューキーは、平均最高気温18°C、最低気温12.7°C、降水量は約99.5 mmで、雨の日はおよそ14.5日です。
- 9月のニューキーの大気質はどうですか?
- 9月のニューキーの米国大気質指数(US AQI)は、平均約44です。
300 km圏内:St IvesのSt Ives September Festival(9月12日〜26日)、BathのJane Austen Festival(9月11日〜20日)。