Kumamoto weather

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The weather guide for Kumamoto, Japan shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in Kumamoto?

The hottest time of year in Kumamoto is normally August. Expect maximum daytime temperatures to reach 33°C with very high heat and humidity.

Which month has the most rain in Kumamoto?

In terms of rainfall, June is usually the wettest month in Kumamoto with 396mm on average. There are normally 19 days in June with some rain.

When is it sunniest in Kumamoto?

The sunniest time of year in Kumamoto is normally August with bright sunshine on average for 50% of daylight hours; that's 7 hours of sunshine per day.

When is the sea warmest in Kumamoto?

The sea is usually at its warmest in Kumamoto in August when the water temperature reaches 27°C.

Metric (°C / mm)  |  Imperial (°F / inches)

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Compare Kumamoto weather with the USA

Below the Kumamoto weather chart shows average maximum daytime temperature for Kumamoto, Japan and the USA (Washington).

Maximum daytime temperature (°C)

Kumamoto, Japan
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: Kumamoto typhoon season

% of month affected by tropical storms
0
0
0
0
0
1.9%
4.1%
8%
5.2%
1.5%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Kumamoto tropical storm risk chart above shows the typhoon season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

More about tropical storms

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Where's hot in Japan right now?

Below are the temperatures expected today at popular destinations in Japan. Select a destination to compare today's forecast with average weather conditions.

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