Brittany, France: Annual Weather Averages

August is the hottest month in Brittany with an average temperature of 18°C (64°F) and the coldest is January at 7.5°C (46°F) with the most daily sunshine hours at 7 in July. The wettest month is December with an average of 62mm of rain. The best month to swim in the sea is in August when the average sea temperature is 19°C (66°F).

Average Temperature: Brittany

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8 8 9 11 14 16 18 18 16 13 10 8
°F 46 46 48 51 57 60 64 64 61 55 49 46

Average High/Low Temperature: Brittany

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 10 10 12 14 18 19 21 22 20 16 12 10
High °F 50 50 54 57 64 66 70 72 68 61 54 50
Low °C 5 5 6 7 10 12 14 14 12 10 7 5
Low °F 41 41 43 45 50 54 57 57 54 50 45 41

Average Rainfall: Brittany

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 54 58 43 42 44 33 38 26 24 57 51 62
Days 17 14 15 14 12 11 12 11 10 16 17 16

Average Daily Sunshine Hours: Brittany

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 2 2 3 4 5 6 7 6 5 4 3 2

Average Sea Temperature: Brittany

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12 12 12 14 14 16 18 19 18 17 15 13
°F 54 54 54 57 57 61 64 66 64 63 59 55

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