Kumamoto Climate by Month
The temperature in Kumamoto can vary quite a bit throughout the year.
Temperatures can be very warm during the warmest months,
and cold during the cooler months.
It also has a notably wet climate with much precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average day and night temperature
Visitors to Kumamoto can expect significant temperature changes throughout the year. Average daytime temperatures range from a very warm 32°C in August, the warmest time of the year, to a chilly 11°C during cooler months like January. At night, temperatures typically average around 3°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Kumamoto is known for its substantial rainfall, with annual precipitation reaching 2037 mm. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, June receives heavy rainfall, averaging 436 mm of precipitation, recorded across 19 rainy days. In contrast, the drier season, January brings less rainfall, with 85 mm over 18 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
While the amount of sunshine in Kumamoto varies throughout the year, all seasons offer their own charm. Enjoy up to 6.9 hours of daily sun in August, and experience slightly darker atmosphere in June, with about 4.4 hours of daily sunlight.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is moderate throughout the year in Kumamoto.
Relative humidity over the year
The best time of year to visit Kumamoto in Japan
During the months of May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Most rainfall (rainy season) is seen in April, May, June, July and September.
August has an average maximum temperature of 32°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 11°C.
June tops the wettest month list with 436 mm of rainfall.
January is the driest month with 85 mm of precipitation.
August is the sunniest month with an average of 208 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
