Climate Insights for Rimouski Airport

The climate in Rimouski Airport is cool. The average annual temperature is 4°C and approximately 1123mm of precipitation falls per year. Rimouski Airport receives a notable amount of rainfall throughout the year, including during its driest month. Rimouski Airport 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, December, when temperatures can drop to -12°C. Rimouski Airport experiences heavy snowfall, typically from January through December.

Temperatures in Rimouski Airport 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 19°C with a mean of 16°C. The coldest month is January, when overnight lows fall to -12°C and the daily average is -9°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 7°C shift in average temperatures.

Rimouski Airport is a moderately rainy area, receiving approximately 1123mm of precipitation annually, which averages out to around 94mm per month. The wettest month is October, averaging 144mm of rainfall. November and April also tend to see above-average precipitation. The driest month is July, with just 74mm. That's 70mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Rimouski Airport receives heavy snowfall, accumulating around 363cm annually from January through December. The snowiest month is January, with approximately 84cm. Winter travel should account for significant snow cover.

Rimouski Airport is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently summer in Rimouski Airport, which began on June 21, 2026. Rimouski 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 July at around 19°C, while the coldest stretch bottoms out in January near -12°C. Autumn is next, beginning on September 23, 2026 — 84 days from now.

The best time to visit Rimouski Airport is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 77mm per month. By contrast, January can be quite cold with temperatures dropping to -12°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 Rimouski 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.