Tristan da Cunha weather live forecast

Today's maximum temperature in Tristan da Cunha is expected to be 18°C. Select a day from the live weather forecast for Tristan da Cunha, St Helena & Islands for more weather parameters.

Tuesday
9th Dec
18

15

5

11
Wednesday
10th Dec
15

14

9

10
Thursday
11th Dec
15

14

8

8
Friday
12th Dec
17

16

3

9
Saturday
13th Dec
19

17

3

8

5-day weather forecast updated at 04:04 on Monday 8th December 2025 GMT

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

Tristan da Cunha weather forecast by day

Below are the detailed weather forecasts for Tristan da Cunha for the next 5 days.

Tristan da Cunha weather for Tuesday 9th December 2025

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 18°C, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 30 kph from the north-west.

18
°C maximum temperature
15
°C minimum temperature
broken clouds
5
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
18
°C wind chill
30
kph wind from NW

Tristan da Cunha weather for Wednesday 10th December 2025

Expect sunshine and showers in Tristan da Cunha, St Helena & Islands with a maximum temperature of 15°C, maximum UV of 10 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 58% chance of some rain and a fresh breeze of 34 kph from the west.

15
°C maximum temperature
14
°C minimum temperature
sunshine and showers
9
hours of sunshine
10
UV index (Very High)
58
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
34
kph wind from W

Tristan da Cunha weather for Thursday 11th December 2025

Expect sunshine and showers in Tristan da Cunha, St Helena & Islands with a maximum temperature of 15°C, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 10% chance of some rain and a fresh breeze of 37 kph from the south-west.

15
°C maximum temperature
14
°C minimum temperature
sunshine and showers
8
hours of sunshine
8
UV index (Very High)
10
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
37
kph wind from SW

Tristan da Cunha weather for Friday 12th December 2025

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 17°C, maximum UV of 9 (Very High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 31 kph from the west.

17
°C maximum temperature
16
°C minimum temperature
broken clouds
3
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
31
kph wind from W

Tristan da Cunha weather for Saturday 13th December 2025

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 19°C, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a strong breeze of 49 kph from the north-west.