Climate Insights for Onega

The climate in Onega is cool. The average annual temperature is 3°C and approximately 845mm of precipitation falls per year. Onega receives a notable amount of rainfall throughout the year, including during its driest month. Onega is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, March, when temperatures can drop to -11°C. Onega experiences heavy snowfall, typically from January through December.

Temperatures in Onega vary considerably across the year, with a 31°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 20°C with a mean of 17°C. The coldest month is January, when overnight lows fall to -11°C and the daily average is -9°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.

Onega is a moderately rainy area, receiving approximately 845mm of precipitation annually, which averages out to around 70mm per month. The wettest month is August, averaging 119mm of rainfall. July and September also tend to see above-average precipitation. The driest month is April, with just 39mm. That's 80mm 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. Onega receives heavy snowfall, accumulating around 276cm annually from January through December. The snowiest month is December, with approximately 56cm. Winter travel should account for significant snow cover.

Onega 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 4km/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. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Onega, which began on June 21, 2026. Onega 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 July at around 20°C, while the coldest stretch bottoms out in January near -11°C. Autumn is next, beginning on September 23, 2026 — 84 days from now.

The table below shows monthly climate averages for Onega 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.