Tristan da Cunha weather live forecast

Today's maximum temperature in Tristan da Cunha is expected to be 13°C. Select a day from the live weather forecast for Tristan da Cunha, St Helena & Islands for more weather parameters.

Tuesday
18th Aug
13

12

4

2
Wednesday
19th Aug
14

13

1

2
Thursday
20th Aug
14

13

6

4
Friday
21st Aug
13

12

2

3
Saturday
22nd Aug
15

13

5

3

5-day weather forecast updated at 04:03 on Tuesday 18th August 2026 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 18th August 2026

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 13°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a fresh breeze of 29 kph from the west.

13
°C maximum temperature
12
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
43
% chance of some rain
<2
mm of rainfall expected
13
°C wind chill
29
kph wind from W

Tristan da Cunha weather for Wednesday 19th August 2026

Expect mostly cloudy with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 14°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a moderate gale of 54 kph from the north-west.

14
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
2
UV index (Low)
85
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
54
kph wind from NW

Tristan da Cunha weather for Thursday 20th August 2026

Expect sunshine and showers in Tristan da Cunha, St Helena & Islands with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 50% chance of some rain and a fresh gale of 65 kph from the north.

14
°C maximum temperature
13
°C minimum temperature
sunshine and showers
6
hours of sunshine
4
UV index (Moderate)
50
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
65
kph wind from N

Tristan da Cunha weather for Friday 21st August 2026

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the west.

13
°C maximum temperature
12
°C minimum temperature
broken clouds
2
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
28
kph wind from W

Tristan da Cunha weather for Saturday 22nd August 2026

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 45 kph from the north-west.