Climate Insights for Brest-Bretagne

The climate in Brest-Bretagne is temperate. The average annual temperature is 12°C and approximately 886mm of precipitation falls per year. Brest-Bretagne receives a notable amount of rainfall throughout the year, including during its driest month. Brest-Bretagne 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 January, February, March, when temperatures can drop to 7°C.

Brest-Bretagne sees moderate temperature variation throughout the year, ranging from 7°C to 19°C. July is the warmest month, though highs remain moderate at 19°C with a mean of 17°C. January is the coolest month, with minimum temperatures around 7°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between April and May, with a 2°C shift in average temperatures.

Brest-Bretagne is a moderately rainy area, receiving approximately 886mm of precipitation annually, which averages out to around 74mm per month. The wettest month is December, averaging 111mm of rainfall. November and January also tend to see above-average precipitation. The driest month is July, with just 46mm. That's 65mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

Brest-Bretagne is moderately windy, with an average annual wind speed of 27km/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 32km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in June, with average winds dropping to 22km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/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 32km/h in winter, 26km/h in spring, 22km/h in summer, 27km/h in autumn.

It is currently spring in Brest-Bretagne, which began on March 20, 2026. Brest-Bretagne 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 7°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The best time to visit Brest-Bretagne is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 56mm per month. By contrast, January can be quite cold with temperatures dropping to 7°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Brest-Bretagne 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. 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.