SeasonMapKumamoto weather in April
Japan
April in Kumamoto: nice, rainy — one of the best months to visit.
#2 of 12 months in Kumamoto · #417 of 1383 destinations to visit in April · comfort 83/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Kumamoto in April
No notes yet. Open Kumamoto on the map to add the first one.
Kumamoto climate normals — April
| Daytime high | 19°C / 67°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 52°F | |
| Sea temperature | 16°C / 60°F | 🥶 cold sea |
| Rainfall | 114 mm / 4.5 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 11°C / 51°F | |
| Sunshine | 8.7 h/day | |
| Daylight | 13 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 55 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Kumamoto in April
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.
Peak crowdsCastle cherry blossom, Golden Week, Spring break (haruyasumi) in Japan(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).
Best weatherKumamoto's best weather comes in April, October and November — separate windows, not one continuous season.
April includes Castle cherry blossom.
Best weatherFair weatherToughest weather
What's on in Kumamoto in April
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 ↗
- Nature
Castle cherry blossom
25 Mar – 10 Apr · usuallyCrowdedThe castle grounds are the city's hanami spot and the reconstruction scaffolding does not put anyone off. Kyushu goes early, so this is usually done before the Tokyo reports start. Source ↗
- Holiday
Golden Week
29 Apr – 5 MayCrowdedBook earlyThe week the country drives, and Kumamoto is on the road to Aso and the Kurokawa hot springs. Expect the Aso road to move at walking pace and the ryokan to have been taken in winter. 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 April — FAQ
- Is April a good time to visit Kumamoto?
- April in Kumamoto: nice, rainy — one of the best months to visit. It ranks #2 of 12 months for Kumamoto on SeasonMap's comfort score (83/100).
- What is the weather like in Kumamoto in April?
- In April, Kumamoto averages a daily high of 19.3°C and a low of 11.3°C, with about 113.9 mm of rain over roughly 9.6 rainy days.
- What is the air quality in Kumamoto in April?
- Kumamoto has a mean US Air Quality Index of about 55 in April.
Other months in Kumamoto
Compare Kumamoto in April
Warmer or cooler than Kumamoto in April
Similar destinations in East Asia — April
Within 300 km: Fukuoka's Cherry blossom around 18 Mar – 5 Apr, and Kagoshima's Cherry blossom around 20 Mar – 5 Apr.