St Helena & Islands weather by month

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °C
22°C maximum daytime temperature in January in St Helena22
23°C maximum daytime temperature in February in St Helena23
23°C maximum daytime temperature in March in St Helena23
22°C maximum daytime temperature in April in St Helena22
21°C maximum daytime temperature in May in St Helena21
19°C maximum daytime temperature in June in St Helena19
18°C maximum daytime temperature in July in St Helena18
17°C maximum daytime temperature in August in St Helena17
18°C maximum daytime temperature in September in St Helena18
18°C maximum daytime temperature in October in St Helena18
19°C maximum daytime temperature in November in St Helena19
20°C maximum daytime temperature in December in St Helena20
Days with some rainfall
14 days with some rainfall in January in St Helena14
14 days with some rainfall in February in St Helena14
15 days with some rainfall in March in St Helena15
15 days with some rainfall in April in St Helena15
14 days with some rainfall in May in St Helena14
16 days with some rainfall in June in St Helena16
16 days with some rainfall in July in St Helena16
15 days with some rainfall in August in St Helena15
12 days with some rainfall in September in St Helena12
14 days with some rainfall in October in St Helena14
13 days with some rainfall in November in St Helena13
12 days with some rainfall in December in St Helena12
Sea temperature °C
23°C sea temperature in January in St Helena23
24°C sea temperature in February in St Helena24
25°C sea temperature in March in St Helena25
25°C sea temperature in April in St Helena25
24°C sea temperature in May in St Helena24
23°C sea temperature in June in St Helena23
21°C sea temperature in July in St Helena21
21°C sea temperature in August in St Helena21
20°C sea temperature in September in St Helena20
20°C sea temperature in October in St Helena20
21°C sea temperature in November in St Helena21
22°C sea temperature in December in St Helena22

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St Helena & Islands by month

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

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The climate guide for St Helena & Islands (St Helena) 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.

Top St Helena & Islands destinations

Below are average maximum temperatures at popular countries, regions and places in St Helena & Islands for next month - February. Select a destination to see the climate guide for all months of the year.

All St Helena & Islands destinations

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

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St Helena & Islands weather averages

Temperature in St Helena & Islands (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
22°C maximum daytime temperature in January in St Helena & Islands (St Helena)22
23°C maximum daytime temperature in February in St Helena & Islands (St Helena)23
23°C maximum daytime temperature in March in St Helena & Islands (St Helena)23
22°C maximum daytime temperature in April in St Helena & Islands (St Helena)22
21°C maximum daytime temperature in May in St Helena & Islands (St Helena)21
19°C maximum daytime temperature in June in St Helena & Islands (St Helena)19
18°C maximum daytime temperature in July in St Helena & Islands (St Helena)18
17°C maximum daytime temperature in August in St Helena & Islands (St Helena)17
18°C maximum daytime temperature in September in St Helena & Islands (St Helena)18
18°C maximum daytime temperature in October in St Helena & Islands (St Helena)18
19°C maximum daytime temperature in November in St Helena & Islands (St Helena)19
20°C maximum daytime temperature in December in St Helena & Islands (St Helena)20
Min temperature (night-time)
18°C minimum night-time temperature in January in St Helena & Islands (St Helena)18
19°C minimum night-time temperature in February in St Helena & Islands (St Helena)19
19°C minimum night-time temperature in March in St Helena & Islands (St Helena)19
18°C minimum night-time temperature in April in St Helena & Islands (St Helena)18
17°C minimum night-time temperature in May in St Helena & Islands (St Helena)17
16°C minimum night-time temperature in June in St Helena & Islands (St Helena)16
15°C minimum night-time temperature in July in St Helena & Islands (St Helena)15
14°C minimum night-time temperature in August in St Helena & Islands (St Helena)14
15°C minimum night-time temperature in September in St Helena & Islands (St Helena)15
15°C minimum night-time temperature in October in St Helena & Islands (St Helena)15
15°C minimum night-time temperature in November in St Helena & Islands (St Helena)15
16°C minimum night-time temperature in December in St Helena & Islands (St Helena)16
Heat & Humidity
No heat & humidity in January in St Helena & Islands (St Helena)0
No heat & humidity in February in St Helena & Islands (St Helena)0
No heat & humidity in March in St Helena & Islands (St Helena)0
No heat & humidity in April in St Helena & Islands (St Helena)0
No heat & humidity in May in St Helena & Islands (St Helena)0
No heat & humidity in June in St Helena & Islands (St Helena)0
No heat & humidity in July in St Helena & Islands (St Helena)0
No heat & humidity in August in St Helena & Islands (St Helena)0
No heat & humidity in September in St Helena & Islands (St Helena)0
No heat & humidity in October in St Helena & Islands (St Helena)0
No heat & humidity in November in St Helena & Islands (St Helena)0
No heat & humidity in December in St Helena & Islands (St Helena)0
Sea temperature
23°C sea temperature in January in St Helena & Islands (St Helena)23
24°C sea temperature in February in St Helena & Islands (St Helena)24
25°C sea temperature in March in St Helena & Islands (St Helena)25
25°C sea temperature in April in St Helena & Islands (St Helena)25
24°C sea temperature in May in St Helena & Islands (St Helena)24
23°C sea temperature in June in St Helena & Islands (St Helena)23
21°C sea temperature in July in St Helena & Islands (St Helena)21
21°C sea temperature in August in St Helena & Islands (St Helena)21
20°C sea temperature in September in St Helena & Islands (St Helena)20
20°C sea temperature in October in St Helena & Islands (St Helena)20
21°C sea temperature in November in St Helena & Islands (St Helena)21
22°C sea temperature in December in St Helena & Islands (St Helena)22

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

Sunshine & UV index in St Helena & Islands

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of daylight
13 hours of daylight per day in January in St Helena & Islands (St Helena)13
13 hours of daylight per day in February in St Helena & Islands (St Helena)13
12 hours of daylight per day in March in St Helena & Islands (St Helena)12
12 hours of daylight per day in April in St Helena & Islands (St Helena)12
11 hours of daylight per day in May in St Helena & Islands (St Helena)11
11 hours of daylight per day in June in St Helena & Islands (St Helena)11
11 hours of daylight per day in July in St Helena & Islands (St Helena)11
12 hours of daylight per day in August in St Helena & Islands (St Helena)12
12 hours of daylight per day in September in St Helena & Islands (St Helena)12
12 hours of daylight per day in October in St Helena & Islands (St Helena)12
13 hours of daylight per day in November in St Helena & Islands (St Helena)13
13 hours of daylight per day in December in St Helena & Islands (St Helena)13
UV Index (Maximum)
UV (maximum) index 11+ (Extreme) in January in St Helena & Islands (St Helena)11
UV (maximum) index 11+ (Extreme) in February in St Helena & Islands (St Helena)11
UV (maximum) index 11+ (Extreme) in March in St Helena & Islands (St Helena)11
UV (maximum) index 11 (Extreme) in April in St Helena & Islands (St Helena)11
UV (maximum) index 9 (Very High) in May in St Helena & Islands (St Helena)9
UV (maximum) index 7 (High) in June in St Helena & Islands (St Helena)7
UV (maximum) index 8 (Very High) in July in St Helena & Islands (St Helena)8
UV (maximum) index 9 (Very High) in August in St Helena & Islands (St Helena)9
UV (maximum) index 11 (Extreme) in September in St Helena & Islands (St Helena)11
UV (maximum) index 11+ (Extreme) in October in St Helena & Islands (St Helena)11
UV (maximum) index 11+ (Extreme) in November in St Helena & Islands (St Helena)11
UV (maximum) index 11+ (Extreme) in December in St Helena & Islands (St Helena)11

Rainfall in St Helena & Islands

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
14 days with some rainfall in January in St Helena & Islands (St Helena)14
14 days with some rainfall in February in St Helena & Islands (St Helena)14
15 days with some rainfall in March in St Helena & Islands (St Helena)15
15 days with some rainfall in April in St Helena & Islands (St Helena)15
14 days with some rainfall in May in St Helena & Islands (St Helena)14
16 days with some rainfall in June in St Helena & Islands (St Helena)16
16 days with some rainfall in July in St Helena & Islands (St Helena)16
15 days with some rainfall in August in St Helena & Islands (St Helena)15
12 days with some rainfall in September in St Helena & Islands (St Helena)12
14 days with some rainfall in October in St Helena & Islands (St Helena)14
13 days with some rainfall in November in St Helena & Islands (St Helena)13
12 days with some rainfall in December in St Helena & Islands (St Helena)12
Average monthly rainfall (mm)
53 mm monthly rainfall in January in St Helena & Islands (St Helena)53
68 mm monthly rainfall in February in St Helena & Islands (St Helena)68
90 mm monthly rainfall in March in St Helena & Islands (St Helena)90
63 mm monthly rainfall in April in St Helena & Islands (St Helena)63
71 mm monthly rainfall in May in St Helena & Islands (St Helena)71
87 mm monthly rainfall in June in St Helena & Islands (St Helena)87
84 mm monthly rainfall in July in St Helena & Islands (St Helena)84
68 mm monthly rainfall in August in St Helena & Islands (St Helena)68
54 mm monthly rainfall in September in St Helena & Islands (St Helena)54
43 mm monthly rainfall in October in St Helena & Islands (St Helena)43
30 mm monthly rainfall in November in St Helena & Islands (St Helena)30
37 mm monthly rainfall in December in St Helena & Islands (St Helena)37

Compare St Helena & Islands weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for St Helena, Ascension and Tristan da Cunha (St Helena) and the UK (London).

Maximum daytime temperature (°C)

St Helena, Ascension and Tristan da Cunha (St Helena)
UK (London)
22
7
23
7
23
10
22
13
21
17
19
20
18
22
17
22
18
19
18
15
19
10
20
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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