宮古島 4月の天気
宮古島の4月:暖かい、雨が多い、蒸し暑い — 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
宮古島では12か月中1位 · 4月に訪れたい旅行先で1413か所中632位 · 快適スコア80/100(Aランク)
- 日中
- 26°C
- 夜
- 20°C
- 雨の日
- 13
- 日照
- 9.2 h
- 湿度
- 78%
- 日の長さ
- 13 h

4月の宮古島についての旅行者の声
Forum posters name March and October as Miyakojima's coolest, driest peak months, with April sitting just after that window - weather is generally described as stable by mid-April, statistically ahead of rainy season with typhoons very rare this early. Posters are direct about sea temperature being the real caveat for an April visit, though: water reported around 20-23C, which some visitors find genuinely too chilly to enjoy swimming for long, even though the official swimming season starts the first Sunday of April. Posters are split on timing overall - some feel April undersells the island's beaches compared to full summer, while others rate it a comfortable, less crowded month to visit. Posters generally recommend April for sightseeing and milder weather, with a wetsuit or shorter swims as the trade-off for cooler water.
宮古島のほかの月
Regulars are direct this counts as a genuine gamble month, the official typhoon season running June through November with most storms actually hitting in July, August, September and October specifically, real potential for arrival or departure delays. Our row backs that hot, genuinely wet read, 31.8C reading as a scorching 37C, over 26.5C nights feeling 30C, with a substantial 232.2mm of rain across 17.3 days and a real 27.7 kph wind. Regulars are consistent March and October are named as the actual best months here, coolest and driest by comparison, this month instead bringing the summer's full heat and humidity on top of the storm risk. Underwater visibility for snorkeling can also take a real hit when rain moves through. The sea sits at a bath-warm 30.1C. The record: 10.5 hours of sun, humidity 82 percent and AQI 39.
May opens the rainy season on this chain of islands, and regulars are quick to distinguish it from the mainland version: it rains neither every day nor all day, more often a one or two hour downpour followed by sun, though some stretches bring lots of drizzle instead and the pattern really cannot be predicted in advance. Our row backs the shift with 227.1mm across 15.9 days at 82.8 percent humidity, while temperature stays comfortable, 28.2C reading as 32C over 23.3C nights. The board's peak recommendation is March or October, the coolest and driest months, but they are clear May is still visitable rather than a month to avoid. The sea is 26C. Typhoons belong to September, not now. The record: 9.6 hours of sun, a 27.9 kph wind and AQI 57.
March counts as a peak month here for reasons that have nothing to do with getting in the water. Regulars name it among the coolest and driest of the year and place it in the typhoon-free spring, which is what makes it comfortable to travel in. The sea is the catch: still wintry, still cold enough that anyone coming for a beach holiday is pointed at April at the earliest, and the windy stretch has not finished either. Our row backs both halves - a 32.8 kph average wind and a 22.9C sea, under 23.1C days and 18C nights that feel like 15C. Driest is relative: 123.1mm still falls, across 12.8 days. The record: humidity 73 percent, 8.1 hours of sun and AQI 58.
Regulars rate Miyako's beaches the best in Japan and July among the worst times to see them: very hot and very humid, with the warm sea making it worse rather than better. Our row is the evidence - 32.1C reading as 38C, nights of 26.7C that feel like 30C, 82 percent humidity and a sea at 29.5C that offers no cooling at all. The other summer risk on the Ryukyus is logistical: typhoons are frequent and can delay an arrival or a departure by days, which matters more than the rain itself, though our 164.7mm across 14.4 days is substantial. March and October are the months they name instead. People who came in July still enjoyed it, with plenty of cold drinks. The record: 11.2 hours of sun, a 31.1 kph wind and AQI 35.
地図の宮古島のカードから自分のメモを追加できます。
宮古島の気候平年値 — 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月の宮古島の混雑
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Strongman Triathlon、Golden Week、日本のSpring break (haruyasumi)(推定)
ピークの混雑混雑ショルダーシーズン閑散
宮古島の天気が良い月
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)。
天気はまずまず宮古島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月の宮古島のイベント
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
Yabiji reef surfaces
3月1日〜4月10日 · 例年増水期Japan's largest reef comes out of the water at the year's lowest spring tides, usually in March. Boats run from Ikema for a couple of hours of walking on it, and then it is gone again.
- 季節
Sea warm enough to swim
4月1日〜11月15日 · 例年The water off Yonaha Maehama is comfortable for most of the year. Wind and swell, not temperature, decide whether the boats to the outer reef go out on any given morning.
- 祭り
Strongman Triathlon
4月5日〜20日 · 例年スポーツイベント混雑早めの予約を休業The island closes its roads for a long-course race each April and every bed on Miyako goes to competitors and their families. Not the week to arrive without a booking. 出典 ↗
- 祝日
Golden Week
4月29日〜5月6日混雑早めの予約をA run of public holidays from 29 April to 5 May when much of Japan travels at once: trains, flights and hotels fill, rates peak and popular sights are crowded. Book well ahead or come the week after. 出典 ↗
宮古島はどこにある?
4月の宮古島 — よくある質問
- 4月は宮古島を訪れるのに良い時期ですか?
- 宮古島の4月:暖かい、雨が多い、蒸し暑い — 一年で最も訪れやすい月のひとつ。SeasonMapの快適スコアでは、宮古島の12か月中1位です(80/100)。
- 4月の宮古島はどんな天気ですか?
- 4月の宮古島は、平均最高気温25.5°C、最低気温20.4°C、降水量は約138.6 mmで、雨の日はおよそ12.6日です。
- 4月の宮古島の大気質はどうですか?
- 4月の宮古島の米国大気質指数(US AQI)は、平均約51です。