ハワイ火山国立公園 4月の天気
ハワイ火山国立公園の4月:快適、大雨続き、空気がきれい — 雨の日23日が気にならなければ悪くない時期。
2026年9月更新 · ERA5再解析による気候平年値
ハワイ火山国立公園では12か月中11位 · 4月に訪れたい旅行先で1413か所中1008位 · 快適スコア72/100(Bランク)
- 日中
- 19°C
- 夜
- 14°C
- 雨の日
- 23
- 日照
- 10.9 h
- 湿度
- 83%
- 日の長さ
- 13 h

4月のハワイ火山国立公園についての旅行者の声
Hawaii Volcanoes-forum threads on early April weather are direct that this sits among the wetter, cooler months at the park, real rain expected across much of the month and posters describing days that can feel genuinely chilly when wind accompanies the wet weather, a sharp contrast to the sunny coastal image most visitors expect from Hawaii. Lower-elevation sections of the park can still see real temperature swings and sunnier stretches even on an otherwise damp day, so conditions vary meaningfully by exactly where in the park a visitor is standing. Layered, water-resistant clothing is standing advice rather than optional. Posters are consistent the park stays genuinely worthwhile despite the rain, several reporting they simply timed sightseeing between passing showers rather than letting the forecast cancel plans outright. The record: 18.8C days feeling like 19C, 13.8C nights, an extraordinarily high 282mm across nearly 23 days, an 25C sea and 83 percent humidity.
ハワイ火山国立公園のほかの月
Hawaii Volcanoes-forum threads on a May visit describe eruption timing as genuinely unpredictable, one couple recalling a trip booked before any activity started, posters warning it could end the next day or run longer. Regulars call several stops genuinely worthwhile regardless of lava activity, several posters naming Chain of Craters Road, Devastation Trail, Steam Vents and Sulphur Banks as standard non-lava options. Posters call the Crater Rim Trail a real highlight, several regulars naming the stretch between Volcano House and Kilauea Military Camp reliable regardless of the volcano. Regulars call Kipukapuaulu, also known as Bird Park, a real quieter alternative, several threads naming this a good add for a break from crater views. Posters recommend real flexible expectations around lava, several regulars calling this standard given how much eruption activity varies. The record: 19.4C days, 14.3C nights, an extraordinarily high 229.8mm across over 22 days and 83 percent humidity.
Hawaii Volcanoes-forum threads on February conditions describe the windward east side of the island as genuinely rainy this month, posters recommending the sunnier west side as a base for anyone wanting to balance park visits with drier weather elsewhere. Regulars call the Kilauea Iki Trail and Thurston Lava Tube solid early-morning picks, arriving around eight considered a real advantage for parking at the main lots. Posters recommend Volcano Village as a practical base, Kilauea Lodge and nearby cottages with kitchens both mentioned repeatedly by regulars. Regulars call sunset running between six and six-thirty this time of year, worth factoring into any late-afternoon viewing plans. Posters recommend real waterproof layers regardless of how the morning looks, conditions here shifting fast given the park's exposure and elevation. The record: 17.7C days feeling like 18C, 12.4C nights, an extraordinarily high 301.2mm across nearly 20 days and 84 percent humidity.
Hawaii Volcanoes-forum threads on vog describe it as forming when sulfur dioxide and other volcanic gases react with oxygen and moisture in sunlight, posters calling this a real, ongoing factor for anyone with asthma. Regulars call the Volcano area surprisingly often clear, prevailing trade winds generally pushing the haze toward Kona instead. Posters describe conditions as genuinely variable day to day, wind and weather both real factors in how much vog reaches a given trail. Regulars call checking air quality worthwhile for anyone sensitive, conditions capable of shifting within a day. Posters recommend flexible plans given the visitor center's construction schedule, renovation capable of affecting access as early as September. Regulars call the park still genuinely worth visiting regardless of vog, the volcanic landscape striking on a clear day. The record: 21.2C days feeling like 22C, 15.8C nights, an extraordinarily high 122.8mm across nearly 18 days and 81 percent humidity.
Hawaii Volcanoes-forum threads comparing March against May are consistent March sits within a slightly more active stretch for showers, February through April named repeatedly as the wetter run of months here. Posters describe the four-thousand-foot elevation as a real factor, conditions noticeably cooler than the coastal resorts most visitors come from, a jacket genuinely useful regardless of season. Regulars recommend real waterproof layers, a shower entirely possible even on an otherwise clear day. Posters describe visitors exploring the crater rim and steam vents in a light shower, most calling the park worth seeing in whatever conditions show up. Regulars call fog a real possibility at this elevation, worth checking visibility before a viewpoint-focused itinerary. The record: 18.2C days feeling like 19C, 13.1C nights, an extraordinarily high 301.4mm across over 23 days and 83 percent humidity.
地図のハワイ火山国立公園のカードから自分のメモを追加できます。
ハワイ火山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月のハワイ火山国立公園の混雑
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。
混雑Kilauea eruption episodes(推定)
ピークの混雑混雑ショルダーシーズン閑散
ハワイ火山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)。
天気はまずまずハワイ火山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月のハワイ火山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。
- 要注意
Kilauea eruption episodes
1月1日〜12月31日火山活動混雑The summit has been erupting in episodes since December 2024, each one a matter of hours rather than weeks, with the alert level moving between watch and advisory. Check the observatory the morning of your visit, not the week before. 出典 ↗
- 休業
Nene nesting closures
9月1日〜5月31日Nesting season runs from September to May, and the park shuts sections of car park and trail around any pair that settles near the caldera rim. Keep sixty feet back, never feed them, and slow down on the crater roads. 出典 ↗
- 季節
Wet season
モンスーンリスク23 rainy days and about 282 mm in the month — the real kind of rainy season, not afternoon showers.
気候の平年値から算出
近くで開催中のイベント
ハワイ火山国立公園から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。
ハワイ火山国立公園はどこにある?
4月のハワイ火山国立公園 — よくある質問
- 4月はハワイ火山国立公園を訪れるのに良い時期ですか?
- ハワイ火山国立公園の4月:快適、大雨続き、空気がきれい — 雨の日23日が気にならなければ悪くない時期。SeasonMapの快適スコアでは、ハワイ火山国立公園の12か月中11位です(72/100)。
- 4月のハワイ火山国立公園はどんな天気ですか?
- 4月のハワイ火山国立公園は、平均最高気温18.8°C、最低気温13.8°C、降水量は約282.1 mmで、雨の日はおよそ22.6日です。
- 4月のハワイ火山国立公園の大気質はどうですか?
- 4月のハワイ火山国立公園の米国大気質指数(US AQI)は、平均約26です。
300 km圏内:HiloのMerrie Monarch Festival(4月5日〜11日)、MauiのHumpback whale season(12月15日〜5月15日)。