Tristan da Cunha weather live forecast

Today's maximum temperature in Tristan da Cunha is expected to be 64°F. Select a day from the live weather forecast for Tristan da Cunha, St Helena & Islands for more weather parameters.

Wednesday
17th Dec
64

61

6

11
Thursday
18th Dec
66

64

6

11
Friday
19th Dec
66

61

0

3
Saturday
20th Dec
66

63

2

11
Sunday
21st Dec
64

57

6

11

5-day weather forecast updated at 04:03 on Wednesday 17th 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 Wednesday 17th December 2025

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 64°F, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 17 mph from the north-west.

64
°F maximum temperature
61
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
0
no heat & humidity
17
mph wind from NW

Tristan da Cunha weather for Thursday 18th December 2025

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 66°F, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 21 mph from the north-west.

66
°F maximum temperature
64
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
0
no heat & humidity
21
mph wind from NW

Tristan da Cunha weather for Friday 19th December 2025

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 66°F, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 59% chance of some rain and a moderate breeze of 15 mph from the north-west.

66
°F maximum temperature
61
°F minimum temperature
mostly cloudy with light rain
0
hours of sunshine
3
UV index (Moderate)
59
% chance of some rain
<2
mm of rainfall expected
66
°F wind chill
15
mph wind from NW

Tristan da Cunha weather for Saturday 20th December 2025

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 66°F, maximum UV of 11 (Extreme) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 42% chance of some rain and a gentle breeze of 12 mph from the north-west.

66
°F maximum temperature
63
°F minimum temperature
mostly cloudy with light rain
2
hours of sunshine
11
UV index (Extreme)
42
% chance of some rain
<5
mm of rainfall expected
66
°F wind chill
12
mph wind from NW

Tristan da Cunha weather for Sunday 21st December 2025

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 64°F, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 49% chance of some rain and a fresh breeze of 18 mph from the south.