Ascension Island weather live forecast

Today's maximum temperature in Ascension Island is expected to be 25°C. Select a day from the live weather forecast for Ascension Island, St Helena & Islands for more weather parameters.

Saturday
16th Aug
25

23

2

8
Sunday
17th Aug
26

23

6

9
Monday
18th Aug
26

23

6

9
Tuesday
19th Aug
26

23

6

8
Wednesday
20th Aug
27

23

7

10

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 Saturday 16th August 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 25°C, maximum UV of 8 (Very High) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-east.

25
°C maximum temperature
23
°C minimum temperature
broken clouds
2
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from SE

Ascension Island weather for Sunday 17th August 2025

Expect broken clouds in Ascension Island, St Helena & Islands with a maximum temperature of 26°C, 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 22 kph from the south-east.

26
°C maximum temperature
23
°C minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
22
kph wind from SE

Ascension Island weather for Monday 18th August 2025

26
°C maximum temperature
23
°C minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
25
kph 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 26°C, 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 25 kph from the south-east.

26
°C maximum temperature
23
°C minimum temperature
broken clouds
6
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
25
kph 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 27°C, 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 28 kph from the south-east.