Tristan da Cunha weather live forecast

Today's maximum temperature in Tristan da Cunha is expected to be 66°F. Select a day from the live weather forecast for Tristan da Cunha, St Helena & Islands for more weather parameters.

Thursday
18th Dec
66

64

9

11
Friday
19th Dec
66

64

0

10
Saturday
20th Dec
66

64

1

10
Sunday
21st Dec
64

55

5

11
Monday
22nd Dec
59

55

5

11

5-day weather forecast updated at 04:03 on Thursday 18th December 2025 GMT

More about Tristan da Cunha

Tristan da Cunha by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for St Helena & Islands

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

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 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 9 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
9
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
66
°F wind chill
21
mph wind from NW

Tristan da Cunha weather for Friday 19th December 2025

Expect overcast with light rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 66°F, maximum UV of 10 (Very High) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 55% chance of some rain and a moderate breeze of 16 mph from the north-west.

66
°F maximum temperature
64
°F minimum temperature
overcast with light rain
0
hours of sunshine
10
UV index (Very High)
55
% chance of some rain
<5
mm of rainfall expected
66
°F wind chill
16
mph wind from NW

Tristan da Cunha weather for Saturday 20th December 2025

Expect overcast skies in Tristan da Cunha, St Helena & Islands with a maximum temperature of 66°F, maximum UV of 10 (Very High) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the north-west.

66
°F maximum temperature
64
°F minimum temperature
overcast skies
1
hour of sunshine
10
UV index (Very High)
0
mm of rainfall expected
66
°F wind chill
16
mph wind from NW

Tristan da Cunha weather for Sunday 21st December 2025

Expect mostly cloudy with rain in Tristan da Cunha, St Helena & Islands with a maximum temperature of 64°F, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 60% chance of some rain and a fresh breeze of 20 mph from the west.

64
°F maximum temperature
55
°F minimum temperature
mostly cloudy with rain
5
hours of sunshine
11
UV index (Extreme)
60
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
20
mph wind from W

Tristan da Cunha weather for Monday 22nd December 2025

Expect broken clouds in Tristan da Cunha, St Helena & Islands with a maximum temperature of 59°F, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 19 mph from the south-east.