Climate Insights for Montmagny

The climate in Montmagny is cool. The average annual temperature is 5°C and approximately 1144mm of precipitation falls per year. Montmagny receives a notable amount of rainfall throughout the year, including during its driest month. Montmagny 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 February, January, December, when temperatures can drop to -13°C. Montmagny experiences heavy snowfall, typically from January through December.

Montmagny has a wide annual temperature range, spanning 37°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 24°C with a mean of 20°C. The coldest month is February, when overnight lows fall to -13°C and the daily average is -9°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between April and May, with a 9°C shift in average temperatures.

Montmagny is a moderately rainy area, receiving approximately 1144mm of precipitation annually, which averages out to around 95mm per month. The wettest month is June, averaging 115mm of rainfall. October and August also tend to see above-average precipitation. The driest month is September, with just 71mm. That's 44mm less than June, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Montmagny receives heavy snowfall, accumulating around 245cm annually from January through December. The snowiest month is January, with approximately 53cm. Winter travel should account for significant snow cover.

Montmagny is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

It is currently spring in Montmagny, which began on March 20, 2026. Montmagny 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 24°C, while the coldest stretch bottoms out in February near -13°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The best time to visit Montmagny is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 94mm per month. By contrast, February can be quite cold with temperatures dropping to -13°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 Montmagny 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.