SeasonMapKumamoto weather in June
Japan
June in Kumamoto: warm, soaked, with muggy air — a gamble, with 16 rainy days.
#10 of 12 months in Kumamoto · #1150 of 1383 destinations to visit in June · comfort 59/100 (tier D)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Kumamoto in June
No notes yet. Open Kumamoto on the map to add the first one.
Kumamoto climate normals — June
| Daytime high | 26°C / 80°F | 🌤 warm |
|---|---|---|
| Nighttime low | 20°C / 69°F | |
| Sea temperature | 23°C / 74°F | 🙂 pleasant |
| Rainfall | 327 mm / 12.9 in | ⛈ soaked |
| Rainy days | 16 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 7.3 h/day | |
| Daylight | 14.3 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 57 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Kumamoto in June
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 3 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Kumamoto's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherKumamoto's best weather comes in April, October and November — separate windows, not one continuous season.
June coincides with Mount Aso crater alerts.
Best weatherFair weatherToughest weather
What's on in Kumamoto in June
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Mount Aso crater alerts
1 Jan – 31 DecVolcanic activityClosuresNakadake is the day trip everyone books and the one that gets cancelled: the crater rim closes without notice on gas readings or a raised alert, and has been shut for long stretches. Check before you drive out. Source ↗
Nearby, and something's on
Within 300 km of Kumamoto — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Kumamoto?
Kumamoto in June — FAQ
- Is June a good time to visit Kumamoto?
- June in Kumamoto: warm, soaked, with muggy air — a gamble, with 16 rainy days. It ranks #10 of 12 months for Kumamoto on SeasonMap's comfort score (59/100).
- What is the weather like in Kumamoto in June?
- In June, Kumamoto averages a daily high of 26.4°C and a low of 20.3°C, with about 327.3 mm of rain over roughly 16 rainy days.
- What is the air quality in Kumamoto in June?
- Kumamoto has a mean US Air Quality Index of about 57 in June.
Other months in Kumamoto
Compare Kumamoto in June
Warmer or cooler than Kumamoto in June
Similar destinations in East Asia — June
Within 300 km: Yakushima's Loggerhead nesting around 10 May – 10 Jul, and Hiroshima's Miyajima visitor tax on 1 Jan – 31 Dec.