Tristan da Cunha weather live forecast

Today's maximum temperature in Tristan da Cunha is expected to be 12°C. Select a day from the live weather forecast for Tristan da Cunha, St Helena & Islands for more weather parameters.

Tuesday
16th Sep
12

11

5

5
Wednesday
17th Sep
12

11

4

4
Thursday
18th Sep
11

10

6

5
Friday
19th Sep
12

10

2

3
Saturday
20th Sep
13

10

4

5

5-day weather forecast updated at 04:03 on Tuesday 16th September 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 16th September 2025

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 12°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 67% chance of some rain and a light breeze of 12 kph from the north.

12
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
67
% chance of some rain
<2
mm of rainfall expected
12
°C wind chill
12
kph wind from N

Tristan da Cunha weather for Wednesday 17th September 2025

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 82% chance of some rain and a moderate breeze of 21 kph from the south-west.

12
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
4
UV index (Moderate)
82
% chance of some rain
<5
mm of rainfall expected
12
°C wind chill
21
kph wind from SW

Tristan da Cunha weather for Thursday 18th September 2025

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 11°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-west.

11
°C maximum temperature
10
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
19
kph wind from SW

Tristan da Cunha weather for Friday 19th September 2025

Expect mostly cloudy with rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 12°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 89% chance of some rain and a fresh breeze of 36 kph from the north-west.

12
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
3
UV index (Moderate)
89
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
36
kph wind from NW

Tristan da Cunha weather for Saturday 20th September 2025

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 13°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 32 kph from the south-west.