ジュノー 4月の天気
ジュノーの4月:寒い、大雨続き、空気がきれい — 雨の日18日があり、運次第の時期。
2026年9月更新 · ERA5再解析による気候平年値
ジュノーでは12か月中5位 · 4月に訪れたい旅行先で1413か所中1208位 · 快適スコア63/100(Cランク)
- 日中
- 10°C
- 夜
- 0°C
- 雨の日
- 18
- 日照
- 7.7 h
- 湿度
- 80%
- 日の長さ
- 15 h

4月のジュノーについての旅行者の声
Regulars are specific that early in this month can bring a genuine winter relapse, fresh snow falling all the way down to sea level and putting tours like Glacier Bay or helicopter flightseeing on hold, a real contrast to how settled May becomes just weeks later. Our row backs that cold, still-wintry read, 9.6C over 0.4C nights feeling -2C, with a heavy 163.4mm of rain across 17.6 days and a real 17.8cm of snow. Regulars are consistent that layered clothing plus proper rain gear, boots, gloves and a hat cover most of what this month can throw at a visitor, since conditions can swing from a mild, clear day to a genuine snow event within the same week. The record: humidity 80 percent, 7.7 hours of sun, a 9.8 kph wind and AQI 40.
ジュノーのほかの月
Regulars are consistent on one rule regardless of the forecast: always bring proper rain gear to this part of Alaska, since even a visitor who caught a genuinely beautiful stretch one year is quick to add that the same week the year before was a washout. Our row backs the wet reality, 175.7mm of rain across a striking 15.4 days, alongside cool temperatures, 14.5C over 5.1C nights feeling 2C, and a trace of late snow, 2.6cm. Regulars pushing toward late May specifically say it can bring some of the season's best weather, so the back half of the month is worth favouring if the dates are flexible. Layering is the standard advice on top of the rain gear, since the temperature swings enough within a day to matter. The record: humidity 82 percent, 8.9 hours of sun and AQI 37.
Regulars answer the question about August rain by reframing it: this is temperate rainforest, measurable rain falls on 222 days of the year, and the right expectation is cloud and drizzle with a sunny day as a bonus. They put the month near 59F with roughly a three-in-four chance of rain on any day, and our row agrees emphatically at 265.1mm across 17.8 days under 19.2C. What the weather does not spoil is the reason to come: the whale trips from May to mid-September find humpbacks essentially every time, with about a one-in-five chance of orcas. The cruise season runs to mid-September. Evenings darken by half past nine. The record: humidity 85 percent, 8 hours of sun and AQI 28.
Juneau measures rain on 222 days of an average year, and the forum's most useful correction is about the kind: this is drizzly English rain rather than a Florida downpour, so it can rain any day without ever being an all-day soaking. Our row gives 164.2mm across 16.7 precipitation days in June. Early June can be genuinely cold and windy, with port temperatures ranging from the high 60s Fahrenheit down to the 40s or 50s, which our row averages at 18.5C over 9.6C. Excursions rarely cancel for rain - the outfitters hand out gear - and the packing list is layers, rain gear, and a hat and gloves for any glacier day. The record: humidity 81 percent, 9.6 hours of sun and 18.1 hours of daylight.
Juneau forum threads describe February as genuinely variable and often described by posters as pretty miserable - rain, snow, wet snow, icy wind or occasionally cold and clear, with no single dominant pattern to count on. Posters were direct that the month rewards flexibility: warm, waterproof layering and a willingness to adjust plans day to day matter more than any specific forecast. A practical note repeated across threads: Alaska's state Legislature convenes in Juneau in February, pushing hotel prices up during what would otherwise be a quiet season. For those hoping to catch the Northern Lights, posters were candid that Juneau's frequent cloud cover makes it an unreliable spot for aurora viewing, though not impossible on a clear night. Snowshoeing toward Mendenhall Glacier or Eagle Beach was recommended as a solid way to make the most of the conditions.
地図のジュノーのカードから自分のメモを追加できます。
ジュノーの気候平年値 — 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月のジュノーの混雑
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Cruise season(推定)
ピークの混雑混雑ショルダーシーズン閑散
ジュノーの天気が良い月
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)。
天気はまずまずジュノ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
4月のジュノーのイベント
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。
- 祭り
Alaska Folk Festival
4月6日〜12日音楽祭A free week of music at Centennial Hall, volunteer-run since the 1970s, with a set limit of fifteen minutes a band. It is the last thing in the calendar that belongs to the town before the ships arrive. 出典 ↗
- 季節
Cruise season
4月25日〜9月30日 · 例年混雑Ships dock nearly every day from late April to the end of September under a daily passenger cap agreed with the town. Downtown is theirs until late afternoon; the trails and the ferry terminal never are. 出典 ↗
- 季節
Eaglecrest ski season
12月5日〜4月5日 · 例年The city runs its own ski hill on Douglas Island, open when the freezing level drops and usually weekends first. Maritime snow, rain at the base, no queues and nobody off a ship. 出典 ↗
ジュノーはどこにある?
4月のジュノー — よくある質問
- 4月はジュノーを訪れるのに良い時期ですか?
- ジュノーの4月:寒い、大雨続き、空気がきれい — 雨の日18日があり、運次第の時期。SeasonMapの快適スコアでは、ジュノーの12か月中5位です(63/100)。
- 4月のジュノーはどんな天気ですか?
- 4月のジュノーは、平均最高気温9.6°C、最低気温0.4°C、降水量は約163.4 mmで、雨の日はおよそ17.6日です。
- 4月のジュノーの大気質はどうですか?
- 4月のジュノーの米国大気質指数(US AQI)は、平均約40です。
- 4月のジュノーは雪が降りますか?
- 4月のジュノーの降雪量は、およそ17.8 cmです。