Climate Insights for Okushiri

The climate in Okushiri is temperate. The average annual temperature is 11°C and approximately 1460mm of precipitation falls per year. Okushiri receives a notable amount of rainfall throughout the year, including during its driest month. Okushiri is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, July. The coldest months are January, February, December, when temperatures can drop to -1°C. Okushiri experiences heavy snowfall, typically from January through December.

Temperatures in Okushiri vary considerably across the year, with a 25°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 24°C with a mean of 23°C. The coldest month is January, when overnight lows fall to -1°C and the daily average is 1°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.

Okushiri is a fairly wet location, receiving approximately 1460mm of precipitation annually, which averages out to around 122mm per month. The wettest month is December, averaging 165mm of rainfall. August and January also tend to see above-average precipitation. The driest month is April, with just 74mm. That's 91mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Okushiri receives heavy snowfall, accumulating around 226cm annually from January through December. The snowiest month is January, with approximately 75cm. Winter travel should account for significant snow cover.

Okushiri is very windy, with an average annual wind speed of 37km/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 46km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in July, with average winds dropping to 27km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 19km/h gap 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 45km/h in winter, 36km/h in spring, 29km/h in summer, 37km/h in autumn.

It is currently spring in Okushiri, which began on March 20, 2026. Okushiri 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 24°C, while the coldest stretch bottoms out in January near -1°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The table below shows monthly climate averages for Okushiri 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.