チャネル諸島国立公園 4月の天気
チャネル諸島国立公園の4月:涼しい、雨が少ない、空気がきれい — 訪れるのに絶好の時期。
2026年9月更新 · ERA5再解析による気候平年値
チャネル諸島国立公園では12か月中7位 · 4月に訪れたい旅行先で1413か所中308位 · 快適スコア86/100(Aランク)
- 日中
- 14°C
- 夜
- 11°C
- 雨の日
- 2
- 日照
- 11.8 h
- 湿度
- 79%
- 日の長さ
- 13 h

4月のチャネル諸島国立公園についての旅行者の声
近くのロサンゼルスからのメモ(149 km)
チャネル諸島国立公園には4月のメモがまだありません — これは季節を共にする近くのロサンゼルスについてのメモです。
Asked whether mid-April is beach weather here, regulars split the question: the sand yes, the water no. Our sea column is why - 14.7C, which is swimming for the committed and paddling for everyone else, under air of 24.2C. They also warn that the coast and the inland city are different places on the same day, the beach in the low seventies while Hollywood is in the eighties, so the decision about a sweater is made by geography rather than forecast. Rain has effectively stopped, 15.9mm across 1.9 days, with 11.5 hours of sun. Nights fall to 12.9C, which surprises people. The record: humidity 61 percent, a dew point of 8.3C, a 14.9 kph wind and AQI 79.
チャネル諸島国立公園のほかの月
Channel Islands-forum threads on a February visit describe checking wind forecasts as genuinely essential before booking, posters naming anything under fifteen knots as fine and over fifteen to eighteen as reason to reconsider. Regulars call whale sightings genuinely realistic in February, several posters naming gray and humpback whales as present this time of year rather than blue whales, which run June through mid-September. Posters call one February crossing a real example, the visitor reporting whale and dolphin sightings both out and back. Regulars call real flexibility standard for a February trip, several threads naming this the honest expectation given how much conditions can shift a crossing. Posters recommend checking current wind conditions the morning of departure, several regulars calling this standard given how much it affects whether the boat runs smoothly. The record: 13.9C days, 10.6C nights, 62.3mm across nearly 6 days and 76 percent humidity.
Channel Islands-forum threads on a March visit describe conditions as generally fine, posters calling the islands green with wildflowers starting to show though March still falls within the wetter part of the year. Regulars call real winter storms still possible, though mild, pleasant stretches are just as common depending on the week. Posters call late April through mid-November the stronger overall window, several regulars specifically recommending avoiding the May Gray and June Gloom months in addition to the wetter winter stretch. Regulars call the islands genuinely cold and exposed in March, no lodging available on any of them and wind capable of turning brutal with little warning. Posters recommend real waterproof and windproof layers regardless of the mainland forecast, conditions on the water and islands running considerably rougher. The record: 13.6C days feeling like 13C, 10.8C nights, an extraordinarily high 72.3mm across nearly 7 days and 78 percent humidity.
Channel Islands-forum threads asking whether January is a bad time describe winter boat access as genuinely limited, posters calling Anacapa and Santa Rosa the only islands typically reachable. Regulars call a wet January capable of ruling out the crossing entirely, checking current conditions with Island Packers standing advice before planning around a date. Posters recommend real warm layers regardless of forecast, the crossing often windy with passengers sometimes stuck sitting outside if the boat runs full. Regulars call reservations not strictly required but the schedule considerably less frequent in winter, confirming a sailing is running worth doing before the drive to the harbor. Posters describe the islands as still genuinely rewarding once reached, considerably quieter than summer. Regulars recommend flexible dates given how weather-dependent winter crossings run here. The record: 14.1C days feeling like 12C, 10.9C nights, 72.3mm across over 7 days and 78 percent humidity.
Channel Islands-forum threads on how to plan a visit call the broader April-through-mid-November stretch generally the strongest window, ferries running regularly to the various islands including Santa Barbara Island through this period. Posters describe October specifically as genuinely dry underfoot, vegetation and trails already parched by this point, a real contrast to greener conditions spring visitors find. Regulars call this dry character a real consideration for anyone hoping for lush scenery, though the islands remain worth visiting regardless. Posters recommend checking current ferry schedules, service to some islands running less frequently outside peak summer. Regulars describe the crossing as genuinely choppy on a breezy day, real seasickness precautions worth taking. Posters call late October a solid pick for anyone comfortable with a drier late-season landscape. The record: 18.4C days feeling like 18C, 15.3C nights, a low 79 percent humidity and 10.2 hours of sun.
地図のチャネル諸島国立公園のカードから自分のメモを追加できます。
チャネル諸島国立公園の気候平年値 — 4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。
4月のチャネル諸島国立公園の混雑
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。
ショルダーシーズン天気は平年並みの月(推定)
ピークの混雑混雑ショルダーシーズン閑散
チャネル諸島国立公園の天気が良い月
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)。
天気はまずまずチャネル諸島国立公園の天気は一年を通じて大きく変わりません — どの月も快適さはほぼ一定です。
4月のチャネル諸島国立公園のイベント
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
Fog and spring wind
4月1日〜7月15日 · 例年霧のシーズンリスクDense fog is normal in late spring and early summer, and the wind builds through the afternoon on the outer islands. Crossings get cancelled outright when the seas are up, so leave a spare day either side of a camping trip. 出典 ↗
近くで開催中のイベント
チャネル諸島国立公園から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。
チャネル諸島国立公園はどこにある?
4月のチャネル諸島国立公園 — よくある質問
- 4月はチャネル諸島国立公園を訪れるのに良い時期ですか?
- チャネル諸島国立公園の4月:涼しい、雨が少ない、空気がきれい — 訪れるのに絶好の時期。SeasonMapの快適スコアでは、チャネル諸島国立公園の12か月中7位です(86/100)。
- 4月のチャネル諸島国立公園はどんな天気ですか?
- 4月のチャネル諸島国立公園は、平均最高気温14.3°C、最低気温11.4°C、降水量は約10.4 mmで、雨の日はおよそ1.7日です。
- 4月のチャネル諸島国立公園の大気質はどうですか?
- 4月のチャネル諸島国立公園の米国大気質指数(US AQI)は、平均約41です。
300 km圏内:Santa BarbaraのBackcountry wildflowers(3月1日〜4月25日ごろ)、Los AngelesのWildflower season(3月1日〜4月30日ごろ)。