Jersey: Annual Weather Averages

July is the hottest month in Jersey with an average temperature of 17°C (62°F) and the coldest is January at 6°C (42°F) with the most daily sunshine hours at 6 in August. The best month to swim in the sea is in August when the average sea temperature is 17°C (63°F).

Average Temperature: Jersey

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6 6 8 9 12 14 17 17 16 13 9 7
°F 42 42 46 47 53 57 62 62 60 55 48 45

Average High/Low Temperature: Jersey

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 7 7 9 11 14 16 19 19 18 14 10 8
High °F 45 45 48 52 57 61 66 66 64 57 50 46
Low °C 4 4 6 6 9 12 14 14 13 11 8 6
Low °F 39 39 43 43 48 54 57 57 55 52 46 43

Average Rainfall: Jersey

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Days 22 20 21 19 16 16 17 16 17 22 23 23

Average Daily Sunshine Hours: Jersey

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 1 2 3 2 4 4 5 6 3 2 1 0

Average Sea Temperature: Jersey

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10 9 9 10 12 14 16 17 16 15 13 11
°F 50 48 48 50 54 57 61 63 61 59 55 52

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