Climate Overview
The climate in Rumoi is cool. The average annual temperature is 8°C and approximately 1458mm of precipitation falls per year. Rumoi receives a notable amount of rainfall throughout the year, including during its driest month. Rumoi 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 -7°C. Rumoi experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Rumoi vary considerably across the year, with a 30°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 January, when overnight lows fall to -7°C and the daily average is -4°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 8°C shift in average temperatures.
Precipitation
Rumoi is a fairly wet location, receiving approximately 1458mm of precipitation annually, which averages out to around 121mm per month. The wettest month is August, averaging 241mm of rainfall. November and October also tend to see above-average precipitation. The driest month is April, with just 66mm. That's 175mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Rumoi receives heavy snowfall, accumulating around 427cm annually from January through December. The snowiest month is December, with approximately 120cm. Winter travel should account for significant snow cover.
Wind
Rumoi is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 3km/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
3 days until Summer
It is currently spring in Rumoi, which began on March 20, 2026. Rumoi 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 January near -7°C. Summer is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from -2 to 15°C. Precipitation is moderate at around 232mm for the season, averaging 77mm per month. Winds are generally light, averaging 4km/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 479mm across the season with a monthly average of 160mm. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 1 to 21°C. Rainfall is heavy, totalling around 422mm across the season with a monthly average of 141mm. Expect around 74cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -7 to 0°C. Rainfall is heavy, totalling around 325mm across the season with a monthly average of 108mm. Expect around 293cm 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 Rumoi 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.
