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Weather by month

Saint-Brieuc Weather by Month

Average temperatures, rainfall and humidity for Saint-Brieuc, France, month by month, built from OpenWeather’s historical records. Use it to see what a typical Saint-Brieuc month looks like before you travel — then check the live Saint-Brieuc forecast for the days ahead.

Warmest month

July

25°C average high

Coolest month

January

3°C average low

Wettest month

January

69 mm of rain

Driest month

July

27 mm of rain

Average temperature and rainfall in Saint-Brieuc by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

Month	Avg high	Avg low	Record low / high	Rainfall	Humidity	Wind
January	9°C	3°C	-11°C / 15°C	69 mm	89%	14 km/h
February	10°C	4°C	-6°C / 21°C	63 mm	83%	15 km/h
March	13°C	5°C	-4°C / 24°C	49 mm	79%	15 km/h
April	16°C	6°C	-4°C / 28°C	45 mm	73%	13 km/h
May	19°C	9°C	0°C / 34°C	50 mm	74%	13 km/h
June	23°C	12°C	5°C / 44°C	41 mm	73%	12 km/h
July	25°C	14°C	6°C / 40°C	27 mm	71%	13 km/h
August	24°C	14°C	6°C / 39°C	39 mm	73%	11 km/h
September	22°C	12°C	5°C / 34°C	30 mm	77%	11 km/h
October	17°C	9°C	-1°C / 30°C	55 mm	84%	13 km/h
November	13°C	6°C	-3°C / 20°C	59 mm	87%	13 km/h
December	10°C	4°C	-7°C / 18°C	52 mm	89%	14 km/h

Best time to visit Saint-Brieuc

The most comfortable time to visit Saint-Brieuc is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around January, totalling about 579 mm a year.

Travellers who prefer heat should aim for July, when highs average 25°C. January is the month to avoid if rain would spoil your plans — it averages 69 mm, roughly 3× the rainfall of the driest month (July).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Saint-Brieuc forecast for what is happening now.