Climate of Tristan da Cunha, Saint Helena
Area-weighted average across Tristan da Cunha. For where people actually live and travel, see the cities below.
Tristan da Cunha, a subdivision of Saint Helena, Ascension and Tristan da Cunha, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from 8.5°C / 47.3°F in September to 14.1°C / 57.4°F in February, with rainfall from 156 mm / 6.1 in to 238 mm / 9.4 in depending on the season (2499 mm / 98.4 in total across the year).
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 13.7°C56.7°F | 174 mm6.9″ | — |
| February | 14.1°C57.4°F | 156 mm6.1″ | — |
| March | 13.7°C56.7°F | 204 mm8″ | — |
| April | 12.5°C54.5°F | 205 mm8.1″ | — |
| May | 10.7°C51.3°F | 222 mm8.7″ | — |
| June | 9.5°C49.1°F | 238 mm9.4″ | — |
| July | 8.7°C47.7°F | 203 mm8″ | — |
| August | 8.6°C47.5°F | 227 mm8.9″ | — |
| September | 8.5°C47.3°F | 219 mm8.6″ | — |
| October | 9.7°C49.5°F | 233 mm9.2″ | — |
| November | 11.4°C52.5°F | 206 mm8.1″ | — |
| December | 12.7°C54.9°F | 212 mm8.3″ | — |
Frequently asked questions
What is the best time to visit Tristan da Cunha?
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha does not have a clear sunny-and-dry window by our cutoffs. The warmest month is February at 14.1°C / 57.4°F, and the driest is February at 156 mm / 6.1 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Tristan da Cunha?
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha has area-weighted monthly average temperatures ranging from 8.5°C / 47.3°F in September to 14.1°C / 57.4°F in February. Annual rainfall averages about 2499 mm / 98.4 in, with the wettest month being June (238 mm / 9.4 in) and the driest February (156 mm / 6.1 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Tristan da Cunha?
The hottest month in Tristan da Cunha is February, with an area-wide average temperature of 14.1°C / 57.4°F.
What is the coldest month in Tristan da Cunha?
The coldest month in Tristan da Cunha is September, with an area-wide average temperature of 8.5°C / 47.3°F.
When does it rain most in Tristan da Cunha?
The wettest month in Tristan da Cunha is June, averaging about 238 mm / 9.4 in of rainfall. The driest is February with about 156 mm / 6.1 in.