Kumamoto weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Good
Best time to visit: April – May, September – November
What is the weather like in Kumamoto in April?
In April, Kumamoto is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 16.2 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 135 mm in total. All in all, April is a good month for a holiday in Kumamoto.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 12 h 58 min05:49 – 18:46
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 63 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %45 %
- Few rainy daysweight 30 %51 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in April
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Kumamoto in April: quick answers
Is Kumamoto hot in April?
No. In April, Kumamoto is mild: daytime highs average 19 °C and nights drop to about 11 °C.
Can you swim in Kumamoto in April?
Only if you don't mind cold water: in April the sea averages just 16.2 °C. Comfortable swimming is possible from June to October.
Does it rain much in Kumamoto in April?
Rain is frequent, with about 11 rainy days and 135 mm in total.
Kumamoto month by month
The whole year in KumamotoAll destinations: JapanWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences