Climate Insights for Bonaventure

The climate in Bonaventure is cool. The average annual temperature is 5°C and approximately 1332mm of precipitation falls per year. Bonaventure receives a notable amount of rainfall throughout the year, including during its driest month. Bonaventure is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are February, January, March, when temperatures can drop to -13°C. Bonaventure experiences heavy snowfall, typically from January through December.

Temperatures in Bonaventure vary considerably across the year, with a 35°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 22°C with a mean of 19°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 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.

Bonaventure is a fairly wet location, receiving approximately 1332mm of precipitation annually, which averages out to around 111mm per month. The wettest month is September, averaging 135mm of rainfall. October and December also tend to see above-average precipitation. The driest month is July, with just 83mm. That's 52mm less than September, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Bonaventure receives heavy snowfall, accumulating around 248cm annually from January through December. The snowiest month is March, with approximately 54cm. Winter travel should account for significant snow cover.

Bonaventure is moderately windy, with an average annual wind speed of 23km/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 26km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/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 26km/h in winter, 23km/h in spring, 19km/h in summer, 24km/h in autumn.

It is currently spring in Bonaventure, which began on March 20, 2026. Bonaventure 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 22°C, while the coldest stretch bottoms out in February near -13°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Bonaventure is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 90mm 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 Bonaventure 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.