Climate Insights for Corner Brook

The climate in Corner Brook is cool. The average annual temperature is 5°C and approximately 1293mm of precipitation falls per year. Corner Brook receives a notable amount of rainfall throughout the year, including during its driest month. Corner Brook 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 -11°C. Corner Brook experiences heavy snowfall, typically from January through December.

Temperatures in Corner Brook vary considerably across the year, with a 32°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 21°C with a mean of 17°C. The coldest month is February, when overnight lows fall to -11°C and the daily average is -7°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between May and June, with a 5°C shift in average temperatures.

Corner Brook is a fairly wet location, receiving approximately 1293mm of precipitation annually, which averages out to around 108mm per month. The wettest month is November, averaging 144mm of rainfall. October and December also tend to see above-average precipitation. The driest month is May, with just 82mm. That's 62mm less than November, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Corner Brook receives heavy snowfall, accumulating around 330cm annually from January through December. The snowiest month is February, with approximately 70cm. Winter travel should account for significant snow cover.

Corner Brook is mildly breezy, with an average annual wind speed of 18km/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 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/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 20km/h in winter, 18km/h in spring, 15km/h in summer, 18km/h in autumn.

It is currently spring in Corner Brook, which began on March 20, 2026. Corner Brook 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 21°C, while the coldest stretch bottoms out in February near -11°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Corner Brook is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 93mm per month. By contrast, August can be uncomfortably hot with highs reaching 21°C, while February is the coldest period with lows dropping to -11°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Corner Brook 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.