When planning a visit to Kumamoto in Japan, it helps to know that temperatures typically range from 10°C (50°F) in January up to 32°C (90°F) during the peak of August. Our detailed climate overview is based on data from Kumamoto, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
The weather in Kumamoto during April, May, June and October is comfortably warm, with average temperatures ranging from 20°C (68°F) to 26°C (79°F).
July and August are generally the hottest months of the year.
When it comes to rainfall, Kumamoto sees significant variations throughout the year. June tends to be the wettest, receiving 435 mm (17 in) of rain, while January is much drier with just 84 mm (3.3 in). Travelers should note that the rainy season falls during June and July, bringing substantial precipitation ranging from 313 mm (12 in) to 435 mm (17 in) monthly.
August is the sunniest period, with ideal conditions for exploring the region and all it has to offer.
