Climate Insights for Kumamoto
Kumamoto Prefecture, Japan
Climate Overview
The climate in Kumamoto is temperate. The average annual temperature is 17°C and approximately 1,998 mm of precipitation falls per year. Kumamoto receives a notable amount of rainfall throughout the year, including during its driest month. Kumamoto is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 4°C. Light snow can occur between January and December.The climate in Kumamoto is temperate. The average annual temperature is 62°F and approximately 78.7 in of precipitation falls per year. Kumamoto receives a notable amount of rainfall throughout the year, including during its driest month. Kumamoto is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 38°F. Light snow can occur between January and December.
Temperature
Temperatures in Kumamoto vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 4°C and an average of 6°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.Temperatures in Kumamoto vary considerably across the year, with a 50°F difference between the coldest and warmest months. The warmest month is August, when average highs reach 88°F and the mean temperature sits around 82°F. January is the coolest month, with minimum temperatures around 38°F and an average of 43°F. Daily temperature variation is modest, with an average difference of 11°F between highs and lows. The sharpest temperature change occurs between October and November, with a 11°F shift in average temperatures.
Precipitation
Kumamoto is a fairly wet location, receiving approximately 1,998 mm of precipitation annually, which averages out to around 167 mm per month. The wettest month is June, averaging 372 mm of rainfall. July and May also tend to see above-average precipitation. The driest month is December, with just 74 mm. That's 298 mm less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 8cm annually. January is the snowiest month with approximately 4cm.Kumamoto is a fairly wet location, receiving approximately 78.7 in of precipitation annually, which averages out to around 6.6 in per month. The wettest month is June, averaging 14.6 in of rainfall. July and May also tend to see above-average precipitation. The driest month is December, with just 2.9 in. That's 11.7 in less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 3in annually. January is the snowiest month with approximately 2in.
Wind
Kumamoto is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.Kumamoto is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 5mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.
Monthly Climate Data
The table below shows monthly climate averages for Kumamoto based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Kumamoto based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.