Jersey weather by month

Check out Jersey weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Jersey (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
8°C maximum daytime temperature in January in Jersey (St Helier)8
8°C maximum daytime temperature in February in Jersey (St Helier)8
10°C maximum daytime temperature in March in Jersey (St Helier)10
12°C maximum daytime temperature in April in Jersey (St Helier)12
16°C maximum daytime temperature in May in Jersey (St Helier)16
18°C maximum daytime temperature in June in Jersey (St Helier)18
20°C maximum daytime temperature in July in Jersey (St Helier)20
20°C maximum daytime temperature in August in Jersey (St Helier)20
19°C maximum daytime temperature in September in Jersey (St Helier)19
16°C maximum daytime temperature in October in Jersey (St Helier)16
12°C maximum daytime temperature in November in Jersey (St Helier)12
9°C maximum daytime temperature in December in Jersey (St Helier)9
Min temperature (night-time)
4°C minimum night-time temperature in January in Jersey (St Helier)4
4°C minimum night-time temperature in February in Jersey (St Helier)4
5°C minimum night-time temperature in March in Jersey (St Helier)5
6°C minimum night-time temperature in April in Jersey (St Helier)6
9°C minimum night-time temperature in May in Jersey (St Helier)9
12°C minimum night-time temperature in June in Jersey (St Helier)12
14°C minimum night-time temperature in July in Jersey (St Helier)14
14°C minimum night-time temperature in August in Jersey (St Helier)14
13°C minimum night-time temperature in September in Jersey (St Helier)13
11°C minimum night-time temperature in October in Jersey (St Helier)11
7°C minimum night-time temperature in November in Jersey (St Helier)7
5°C minimum night-time temperature in December in Jersey (St Helier)5
Heat & Humidity
No heat & humidity in January in Jersey (St Helier)0
No heat & humidity in February in Jersey (St Helier)0
No heat & humidity in March in Jersey (St Helier)0
No heat & humidity in April in Jersey (St Helier)0
No heat & humidity in May in Jersey (St Helier)0
No heat & humidity in June in Jersey (St Helier)0
No heat & humidity in July in Jersey (St Helier)0
No heat & humidity in August in Jersey (St Helier)0
No heat & humidity in September in Jersey (St Helier)0
No heat & humidity in October in Jersey (St Helier)0
No heat & humidity in November in Jersey (St Helier)0
No heat & humidity in December in Jersey (St Helier)0
Sea temperature
9°C sea temperature in January in Jersey (St Helier)9
8°C sea temperature in February in Jersey (St Helier)8
8°C sea temperature in March in Jersey (St Helier)8
10°C sea temperature in April in Jersey (St Helier)10
12°C sea temperature in May in Jersey (St Helier)12
14°C sea temperature in June in Jersey (St Helier)14
17°C sea temperature in July in Jersey (St Helier)17
18°C sea temperature in August in Jersey (St Helier)18
17°C sea temperature in September in Jersey (St Helier)17
16°C sea temperature in October in Jersey (St Helier)16
13°C sea temperature in November in Jersey (St Helier)13
11°C sea temperature in December in Jersey (St Helier)11

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Jersey

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Jersey (St Helier)9
10 hours of daylight per day in February in Jersey (St Helier)10
12 hours of daylight per day in March in Jersey (St Helier)12
14 hours of daylight per day in April in Jersey (St Helier)14
15 hours of daylight per day in May in Jersey (St Helier)15
16 hours of daylight per day in June in Jersey (St Helier)16
16 hours of daylight per day in July in Jersey (St Helier)16
14 hours of daylight per day in August in Jersey (St Helier)14
13 hours of daylight per day in September in Jersey (St Helier)13
11 hours of daylight per day in October in Jersey (St Helier)11
9 hours of daylight per day in November in Jersey (St Helier)9
8 hours of daylight per day in December in Jersey (St Helier)8
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Jersey (St Helier)1
UV (maximum) index 2 (Low) in February in Jersey (St Helier)2
UV (maximum) index 3 (Moderate) in March in Jersey (St Helier)3
UV (maximum) index 4 (Moderate) in April in Jersey (St Helier)4
UV (maximum) index 6 (High) in May in Jersey (St Helier)6
UV (maximum) index 7 (High) in June in Jersey (St Helier)7
UV (maximum) index 7 (High) in July in Jersey (St Helier)7
UV (maximum) index 6 (High) in August in Jersey (St Helier)6
UV (maximum) index 4 (Moderate) in September in Jersey (St Helier)4
UV (maximum) index 2 (Low) in October in Jersey (St Helier)2
UV (maximum) index 1 (Low) in November in Jersey (St Helier)1
UV (maximum) index 1 (Low) in December in Jersey (St Helier)1

Rainfall in Jersey

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
20 days with some rainfall in January in Jersey (St Helier)20
16 days with some rainfall in February in Jersey (St Helier)16
16 days with some rainfall in March in Jersey (St Helier)16
14 days with some rainfall in April in Jersey (St Helier)14
13 days with some rainfall in May in Jersey (St Helier)13
11 days with some rainfall in June in Jersey (St Helier)11
10 days with some rainfall in July in Jersey (St Helier)10
11 days with some rainfall in August in Jersey (St Helier)11
13 days with some rainfall in September in Jersey (St Helier)13
15 days with some rainfall in October in Jersey (St Helier)15
19 days with some rainfall in November in Jersey (St Helier)19
19 days with some rainfall in December in Jersey (St Helier)19
Average monthly rainfall (mm)
102 mm monthly rainfall in January in Jersey (St Helier)102
77 mm monthly rainfall in February in Jersey (St Helier)77
76 mm monthly rainfall in March in Jersey (St Helier)76
55 mm monthly rainfall in April in Jersey (St Helier)55
56 mm monthly rainfall in May in Jersey (St Helier)56
48 mm monthly rainfall in June in Jersey (St Helier)48
42 mm monthly rainfall in July in Jersey (St Helier)42
52 mm monthly rainfall in August in Jersey (St Helier)52
75 mm monthly rainfall in September in Jersey (St Helier)75
91 mm monthly rainfall in October in Jersey (St Helier)91
115 mm monthly rainfall in November in Jersey (St Helier)115
112 mm monthly rainfall in December in Jersey (St Helier)112

More about Jersey

Jersey by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Jersey, represented by St Helier, (St Helier) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Jersey climate overview

Jersey has a delightfully warm summer climate and enjoys mild, if rainy, winters. On the long summer days, between May and September, you can bask in an average of 8 hours of sunshine a day but, if you are planning a walk or a visit to the beach, take a cover-up as those sea breezes can be chilly.

Beach on the north coast of Jersey, Channel Islands
Beach on the north coast of Jersey, Channel Islands © Alagz - Adobe Stock Image

Rain falls mainly in the autumn and winter but can occur sporadically in the summer months. Winters are cool but rarely very cold.

What to pack for Jersey

Take relatively warm clothing for the cool winter months and, in the summer, supplement beach wear and light clothing with a warm wrap, just in case. Be prepared for rain at any time of year.

Tropical storm risk: Jersey hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
0
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Compare Jersey weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Jersey (St Helier) and the UK (London).

Maximum daytime temperature (°C)

Jersey (St Helier)
UK (London)
8
7
8
7
10
10
12
13
16
17
18
20
20
22
20
22
19
19
16
15
12
10
9
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

Compare more weather >>

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