Climate Overview
The climate in Kuromatsunai is cool. The average annual temperature is 8°C and approximately 1296mm of precipitation falls per year. Kuromatsunai receives a notable amount of rainfall throughout the year, including during its driest month. Kuromatsunai 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 February, January, December, when temperatures can drop to -5°C. Kuromatsunai experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Kuromatsunai vary considerably across the year, with a 28°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 23°C with a mean of 21°C. The coldest month is February, when overnight lows fall to -5°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.
Precipitation
Kuromatsunai is a fairly wet location, receiving approximately 1296mm of precipitation annually, which averages out to around 108mm per month. The wettest month is August, averaging 165mm of rainfall. September and July also tend to see above-average precipitation. The driest month is January, with just 73mm. That's 92mm 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. Kuromatsunai receives heavy snowfall, accumulating around 305cm annually from January through December. The snowiest month is December, with approximately 77cm. Winter travel should account for significant snow cover.
Wind
Kuromatsunai is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 4km/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 2km/h gap between the calmest and windiest months.
Seasons
89 days until Autumn
It is currently summer in Kuromatsunai, which began on June 21, 2026. Kuromatsunai 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 23°C, while the coldest stretch bottoms out in February near -5°C. Autumn is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from -2 to 14°C. Precipitation is moderate at around 238mm for the season, averaging 79mm per month. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 13 to 23°C. Rainfall is heavy, totalling around 431mm across the season with a monthly average of 144mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 2 to 21°C. Rainfall is heavy, totalling around 372mm across the season with a monthly average of 124mm. Expect around 40cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -5 to 1°C. Precipitation is moderate at around 255mm for the season, averaging 85mm per month. Expect around 208cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Kuromatsunai 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.
