Tristan da Cunha weather in May 2025

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

Daytime temperatures usually reach 15°C in Tristan da Cunha in May, falling to 11°C at night.

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

There are normally 4 hours of bright sunshine each day in Tristan da Cunha in May - that's 35% of daylight hours.

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

The average sea temperature around Tristan da Cunha in May is 16°C.

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

There are usually 21 days with some rain in Tristan da Cunha in May and the average monthly rainfall is 140mm.

Expect daytime maximum temperatures of 59°F in Tristan da Cunha, St Helena & Islands in May based on long-term weather averages. There are 4 hours of sunshine per day on average with 21 days with some rainfall and typically 5.5 inches of rainfall in the month.

59
59°F max day temperature
4
4 hours of sunshine per day
21
21 days with some rainfall
52
52°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
5.5
5.5 inches of monthly rainfall
3
3 (Moderate) UV index
61
61°F sea temperature

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

Momondo: Compare latest car hire deals

Sale

Search & compare the best car hire deals
Free 48-hour cancellation policy & no hidden charges
Check prices with Avis, Europcar, Sixt & more

Go to Momondo deal >>

View all Momondo offers

The May 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 May?

Daytime temperatures usually reach 59°F in Tristan da Cunha in May, falling to 52°F at night.

How sunny is it in Tristan da Cunha in May?

There are normally 4 hours of bright sunshine each day in Tristan da Cunha in May - that's 35% of daylight hours.

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

The average sea temperature around Tristan da Cunha in May is 61°F.

Does it rain in Tristan da Cunha in May?

There are usually 21 days with some rain in Tristan da Cunha in May and the average monthly rainfall is 5.5 inches.

Tristan da Cunha May sunrise & sunset times

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

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