Climate Insights for Tosashimizu

The climate in Tosashimizu is warm and mild. The average annual temperature is 19°C and approximately 2257mm of precipitation falls per year. Tosashimizu receives a notable amount of rainfall throughout the year, including during its driest month. Tosashimizu 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 9°C.

Tosashimizu sees moderate temperature variation throughout the year, ranging from 9°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 9°C and an average of 11°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 5°C shift in average temperatures.

Tosashimizu is a very wet location, receiving approximately 2257mm of precipitation annually, which averages out to around 188mm per month. The wettest month is June, averaging 349mm of rainfall. July and September also tend to see above-average precipitation. The driest month is December, with just 84mm. That's 265mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Tosashimizu is very windy, with an average annual wind speed of 30km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 36km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in August, with average winds dropping to 26km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 10km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 35km/h in winter, 30km/h in spring, 27km/h in summer, 29km/h in autumn.

It is currently spring in Tosashimizu, which began on March 20, 2026. Tosashimizu is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 29°C, while the coldest stretch bottoms out in January near 9°C. Summer is next, beginning on June 21, 2026 — 87 days from now.

The table below shows monthly climate averages for Tosashimizu 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. 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.