Climate Insights for Harbour Breton

The climate in Harbour Breton is cool. The average annual temperature is 6°C and approximately 1502mm of precipitation falls per year. Harbour Breton receives a notable amount of rainfall throughout the year, including during its driest month. Harbour Breton 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 -6°C. Snowfall occurs from January to December, with around 198cm accumulating over the season.

Temperatures in Harbour Breton vary considerably across the year, with a 25°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 19°C with a mean of 17°C. The coldest month is February, when overnight lows fall to -6°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between May and June, with a 5°C shift in average temperatures.

Harbour Breton is a fairly wet location, receiving approximately 1502mm of precipitation annually, which averages out to around 125mm per month. The wettest month is November, averaging 163mm of rainfall. January and October also tend to see above-average precipitation. The driest month is May, with just 96mm. That's 67mm 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. Snowfall is a regular feature from January to December, with around 198cm accumulating over the season. February typically sees the most snow at around 49cm.

Harbour Breton is very windy, with an average annual wind speed of 30km/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 37km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in July, with average winds dropping to 24km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 13km/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 35km/h in winter, 30km/h in spring, 25km/h in summer, 31km/h in autumn.

It is currently spring in Harbour Breton, which began on March 20, 2026. Harbour Breton 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 19°C, while the coldest stretch bottoms out in February near -6°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Harbour Breton 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.