Climate Overview
The climate in Eastmain River Airport is cold. The average annual temperature is 0°C and approximately 845mm of precipitation falls per year. September is the wettest month, receiving around 116mm of rainfall. Eastmain River Airport 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, March, when temperatures can drop to -21°C. Eastmain River Airport experiences heavy snowfall, typically from January through December.
Temperature
Eastmain River Airport has a wide annual temperature range, spanning 38°C from the coldest to warmest months. August is the warmest month, though highs remain moderate at 17°C with a mean of 14°C. February brings the harshest conditions, with lows dropping to -21°C and an average temperature of -18°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between November and December, with a 8°C shift in average temperatures.
Precipitation
Eastmain River Airport is a moderately rainy area, receiving approximately 845mm of precipitation annually, which averages out to around 70mm per month. The wettest month is September, averaging 116mm of rainfall. October and November also tend to see above-average precipitation. The driest month is February, with just 30mm. That's 86mm less than September, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Eastmain River Airport receives heavy snowfall, accumulating around 208cm annually from January through December. The snowiest month is November, with approximately 48cm. Winter travel should account for significant snow cover.
Wind
Eastmain River Airport is moderately windy, with an average annual wind speed of 25km/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 28km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 22km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 6km/h 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 25km/h in winter, 24km/h in spring, 22km/h in summer, 27km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Eastmain River Airport, which began on March 20, 2026. Eastmain River Airport 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 17°C, while the coldest stretch bottoms out in February near -21°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from -15 to 8°C. Rainfall is relatively light, with around 145mm over the season and a monthly average of 48mm. Winds are moderate at around 24km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 6 to 17°C. Precipitation is moderate at around 248mm for the season, averaging 83mm per month. Winds are moderate at around 22km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -4 to 15°C. Rainfall is heavy, totalling around 324mm across the season with a monthly average of 108mm. Expect around 61cm of snow accumulation during this period. Winds are strong, averaging 27km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -21 to -7°C. Rainfall is relatively light, with around 129mm over the season and a monthly average of 43mm. Expect around 95cm of snow accumulation during this period. Winds are strong, averaging 25km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for Eastmain River Airport 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.
