Tristan da Cunha weather live forecast

Today's maximum temperature in Tristan da Cunha is expected to be 11°C. Select a day from the live weather forecast for Tristan da Cunha, St Helena & Islands for more weather parameters.

Monday
15th Sep
11

10

2

3
Tuesday
16th Sep
11

10

5

4
Wednesday
17th Sep
11

10

5

4
Thursday
18th Sep
11

10

5

5
Friday
19th Sep
13

10

1

1

5-day weather forecast updated at 04:04 on Monday 15th 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 Monday 15th September 2025

Expect mostly cloudy with rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 63% chance of some rain and a gentle breeze of 17 kph from the east.

11
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
3
UV index (Moderate)
63
% chance of some rain
<10
mm of rainfall expected
11
°C wind chill
17
kph wind from E

Tristan da Cunha weather for Tuesday 16th September 2025

Expect sunshine and showers in Tristan da Cunha, St Helena & Islands with a maximum temperature of 11°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a gentle breeze of 15 kph from the north.

11
°C maximum temperature
10
°C minimum temperature
sunshine and showers
5
hours of sunshine
4
UV index (Moderate)
85
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
15
kph wind from N

Tristan da Cunha weather for Wednesday 17th September 2025

Expect sunshine and showers in Tristan da Cunha, St Helena & Islands with a maximum temperature of 11°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 40% chance of some rain and a gentle breeze of 18 kph from the south-west.

11
°C maximum temperature
10
°C minimum temperature
sunshine and showers
5
hours of sunshine
4
UV index (Moderate)
40
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
18
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 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the south-west.

11
°C maximum temperature
10
°C minimum temperature
broken clouds
5
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
21
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 13°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 86% chance of some rain and a strong breeze of 40 kph from the south-west.