Climate Insights for Semboku

The climate in Semboku is cool. The average annual temperature is 9°C and approximately 2086mm of precipitation falls per year. Semboku receives a notable amount of rainfall throughout the year, including during its driest month. Semboku 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 -6°C. Semboku experiences heavy snowfall, typically from January through December.

Temperatures in Semboku vary considerably across the year, with a 33°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 27°C and the mean temperature sits around 23°C. The coldest month is January, when overnight lows fall to -6°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.

Semboku is a very wet location, receiving approximately 2086mm of precipitation annually, which averages out to around 174mm per month. The wettest month is August, averaging 244mm of rainfall. July and June also tend to see above-average precipitation. The driest month is January, with just 124mm. That's 121mm less than August, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Semboku receives heavy snowfall, accumulating around 431cm annually from January through December. The snowiest month is January, with approximately 106cm. Winter travel should account for significant snow cover.

Semboku is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Semboku, which began on June 21, 2026. Semboku 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 27°C, while the coldest stretch bottoms out in January near -6°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The table below shows monthly climate averages for Semboku 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.