Tristan da Cunha weather in August 2025

Q: How warm is it in Tristan da Cunha in August?

Daytime temperatures usually reach 13°C in Tristan da Cunha in August, falling to 9°C at night.

Q: How sunny is it in Tristan da Cunha in August?

There are normally 3 hours of bright sunshine each day in Tristan da Cunha in August - that's 32% of daylight hours.

Q: How warm is the sea around Tristan da Cunha in August?

The average sea temperature around Tristan da Cunha in August is 13°C.

Q: Does it rain in Tristan da Cunha in August?

There are usually 22 days with some rain in Tristan da Cunha in August and the average monthly rainfall is 155mm.

Expect 55°F daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Tristan da Cunha in August. Check more long-term weather averages for Tristan da Cunha in August before you book your next holiday to St Helena & Islands in 2025/2026.

55
55°F max day temperature
3
3 hours of sunshine per day
22
22 days with some rainfall
48
48°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
6.1
6.1 inches of monthly rainfall
3
3 (Moderate) UV index
55
55°F sea temperature

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The August weather guide for St Helena & Islands (Tristan da Cunha) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C) | Imperial (°F)

How warm is it in Tristan da Cunha in August?

Daytime temperatures usually reach 55°F in Tristan da Cunha in August, falling to 48°F at night.

How sunny is it in Tristan da Cunha in August?

There are normally 3 hours of bright sunshine each day in Tristan da Cunha in August - that's 32% of daylight hours.

How warm is the sea around Tristan da Cunha in August?

The average sea temperature around Tristan da Cunha in August is 55°F.

Does it rain in Tristan da Cunha in August?

There are usually 22 days with some rain in Tristan da Cunha in August and the average monthly rainfall is 6.1 inches.

Tristan da Cunha August sunrise & sunset times

Browse the sunrise and sunset times for Tristan da Cunha in August 2025. Select a month to view Tristan da Cunha sunrise and sunset times for the next 12 months.

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