St Helier weather by month

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

Temperature in St Helier (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
46°F maximum daytime temperature in January in St Helier46
46°F maximum daytime temperature in February in St Helier46
50°F maximum daytime temperature in March in St Helier50
54°F maximum daytime temperature in April in St Helier54
61°F maximum daytime temperature in May in St Helier61
64°F maximum daytime temperature in June in St Helier64
68°F maximum daytime temperature in July in St Helier68
68°F maximum daytime temperature in August in St Helier68
66°F maximum daytime temperature in September in St Helier66
61°F maximum daytime temperature in October in St Helier61
54°F maximum daytime temperature in November in St Helier54
48°F maximum daytime temperature in December in St Helier48
Min temperature (night-time)
39°F minimum night-time temperature in January in St Helier39
39°F minimum night-time temperature in February in St Helier39
41°F minimum night-time temperature in March in St Helier41
43°F minimum night-time temperature in April in St Helier43
48°F minimum night-time temperature in May in St Helier48
54°F minimum night-time temperature in June in St Helier54
57°F minimum night-time temperature in July in St Helier57
57°F minimum night-time temperature in August in St Helier57
55°F minimum night-time temperature in September in St Helier55
52°F minimum night-time temperature in October in St Helier52
45°F minimum night-time temperature in November in St Helier45
41°F minimum night-time temperature in December in St Helier41
Heat & Humidity
No heat & humidity in January in St Helier0
No heat & humidity in February in St Helier0
No heat & humidity in March in St Helier0
No heat & humidity in April in St Helier0
No heat & humidity in May in St Helier0
No heat & humidity in June in St Helier0
No heat & humidity in July in St Helier0
No heat & humidity in August in St Helier0
No heat & humidity in September in St Helier0
No heat & humidity in October in St Helier0
No heat & humidity in November in St Helier0
No heat & humidity in December in St Helier0
Sea temperature
48°F sea temperature in January in St Helier48
46°F sea temperature in February in St Helier46
46°F sea temperature in March in St Helier46
50°F sea temperature in April in St Helier50
54°F sea temperature in May in St Helier54
57°F sea temperature in June in St Helier57
63°F sea temperature in July in St Helier63
64°F sea temperature in August in St Helier64
63°F sea temperature in September in St Helier63
61°F sea temperature in October in St Helier61
55°F sea temperature in November in St Helier55
52°F sea temperature in December in St Helier52

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

Sunshine & Daylight in St Helier

  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 St Helier9
10 hours of daylight per day in February in St Helier10
12 hours of daylight per day in March in St Helier12
14 hours of daylight per day in April in St Helier14
15 hours of daylight per day in May in St Helier15
16 hours of daylight per day in June in St Helier16
16 hours of daylight per day in July in St Helier16
14 hours of daylight per day in August in St Helier14
13 hours of daylight per day in September in St Helier13
11 hours of daylight per day in October in St Helier11
9 hours of daylight per day in November in St Helier9
8 hours of daylight per day in December in St Helier8
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in St Helier1
UV (maximum) index 2 (Low) in February in St Helier2
UV (maximum) index 3 (Moderate) in March in St Helier3
UV (maximum) index 4 (Moderate) in April in St Helier4
UV (maximum) index 6 (High) in May in St Helier6
UV (maximum) index 7 (High) in June in St Helier7
UV (maximum) index 7 (High) in July in St Helier7
UV (maximum) index 6 (High) in August in St Helier6
UV (maximum) index 4 (Moderate) in September in St Helier4
UV (maximum) index 2 (Low) in October in St Helier2
UV (maximum) index 1 (Low) in November in St Helier1
UV (maximum) index 1 (Low) in December in St Helier1

Rainfall in St Helier

  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 St Helier20
16 days with some rainfall in February in St Helier16
16 days with some rainfall in March in St Helier16
14 days with some rainfall in April in St Helier14
13 days with some rainfall in May in St Helier13
11 days with some rainfall in June in St Helier11
10 days with some rainfall in July in St Helier10
11 days with some rainfall in August in St Helier11
13 days with some rainfall in September in St Helier13
15 days with some rainfall in October in St Helier15
19 days with some rainfall in November in St Helier19
19 days with some rainfall in December in St Helier19
Average monthly rainfall (inches)
4.0 inches monthly rainfall in January in St Helier4.0
3.0 inches monthly rainfall in February in St Helier3.0
3.0 inches monthly rainfall in March in St Helier3.0
2.2 inches monthly rainfall in April in St Helier2.2
2.2 inches monthly rainfall in May in St Helier2.2
1.9 inches monthly rainfall in June in St Helier1.9
1.7 inches monthly rainfall in July in St Helier1.7
2.0 inches monthly rainfall in August in St Helier2.0
3.0 inches monthly rainfall in September in St Helier3.0
3.6 inches monthly rainfall in October in St Helier3.6
4.5 inches monthly rainfall in November in St Helier4.5
4.4 inches monthly rainfall in December in St Helier4.4

More about St Helier

St Helier 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.

What's the climate like in St Helier?

St Helier has a temperate climate with warm summers and some rainfall in all months.

Metric (°C)  |  Imperial (°F)

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Tropical storm risk: St Helier, 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

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Compare St Helier with the USA

Below the St Helier chart shows average maximum daytime temperature for St Helier, Jersey and the USA (Washington).

Maximum daytime temperature (°F)

St Helier, Jersey
USA (Washington)
46
41
46
45
50
55
54
66
61
75
64
84
68
88
68
86
66
79
61
68
54
57
48
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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