Ascension Island weather live forecast

Today's maximum temperature in Ascension Island is expected to be 79°F. Select a day from the live weather forecast for Ascension Island, St Helena & Islands for more weather parameters.

Sunday
17th Aug
79

73

6

9
Monday
18th Aug
79

73

6

9
Tuesday
19th Aug
79

73

6

8
Wednesday
20th Aug
81

73

7

10
Thursday
21st Aug
79

73

8

6

5-day weather forecast updated at 04:03 on Saturday 16th August 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 Sunday 17th August 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 79°F, low levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the south-east.

79
°F maximum temperature
73
°F minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
14
mph wind from SE

Ascension Island weather for Monday 18th August 2025

79
°F maximum temperature
73
°F minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
16
mph wind from SE

Ascension Island weather for Tuesday 19th August 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 79°F, low levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the south-east.

79
°F maximum temperature
73
°F minimum temperature
broken clouds
6
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
16
mph wind from SE

Ascension Island weather for Wednesday 20th August 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 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
10
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
17
mph wind from SE

Ascension Island weather for Thursday 21st August 2025

Expect scattered clouds in Ascension Island, St Helena & Islands with a maximum temperature of 79°F, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 19 mph from the south-east.