Ascension Island weather live forecast

Today's maximum temperature in Ascension Island is expected to be 81°F. Select a day from the live weather forecast for Ascension Island, St Helena & Islands for more weather parameters.

Tuesday
16th Dec
81

73

8

10
Wednesday
17th Dec
81

73

5

11
Thursday
18th Dec
81

73

7

11
Friday
19th Dec
81

73

6

11
Saturday
20th Dec
81

73

5

9

5-day weather forecast updated at 04:03 on Monday 15th December 2025 GMT

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The 5-day weather forecast for St Helena & Islands (Ascension Island) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Ascension Island weather forecast by day

Below are the detailed weather forecasts for Ascension Island for the next 5 days.

Ascension Island weather for Tuesday 16th December 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 15 mph from the south-east.

81
°F maximum temperature
73
°F minimum temperature
broken clouds
8
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
15
mph wind from SE

Ascension Island weather for Wednesday 17th December 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 15 mph from the south-east.

81
°F maximum temperature
73
°F minimum temperature
broken clouds
5
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
15
mph wind from SE

Ascension Island weather for Thursday 18th December 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 17 mph from the south-east.

81
°F maximum temperature
73
°F minimum temperature
broken clouds
7
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
17
mph wind from SE

Ascension Island weather for Friday 19th December 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the south-east.

81
°F maximum temperature
73
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
16
mph wind from SE

Ascension Island weather for Saturday 20th December 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the south-east.