Kumamoto Weather in May
What's the weather like in Kumamoto (Kumamoto) in May 2025?
The climate in Kumamoto during May can be summarized as warm and very wet.
May is in the spring in Kumamoto and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 25°C (77°F), whilst at night 15°C (58°F) is normal.
| Daytime temperature | 25.1°C 77.2°F |
|---|---|
| Nightly temperature | 14.5°C 58.1°F |
| Average temperature | 19.8°C 67.6°F |
| Daily sunshine | 6.1 hrs |
| Avg rainfall | 209 mm 8.2 ins |
| Rainy days | 16 days |
| Sea temperature | 20.9°C 69.6°F |
| Humidity | 73% |
| Windspeed | 6.8kph 4 mph |
On average May is the 3rd wettest month of the year in Kumamoto with around 209mm 8.2 inches of rain making it a very wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.1 hours of sunshine per day.
May temperatures in Kumamoto
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Kumamoto in May 2024.
Other monthly averages
Kumamoto weather stats
| Hottest month: | August | 32.4°C 90.3°F |
|---|---|---|
| Driest month: | December | 51mm 2ins |
| Sunniest month: | August | 7.1hrs |
| Coldest month: | January | 9.9°C 49.8°F |
| Wettest month: | June | 396mm 15.6ins |
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