Average annual temperature is 13.9 °C
Absolute maximum temperature: 20.0 °C
Absolute minimum temperature: 5.8 °C
Number of sunny days: 56 days
Number of rainy days: 309 days
Look at detailed online map of Tristan da Cunha
* Weather data for Tristan da Cunha Saint Helena is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 18.5 | 19.8 | 20.0 | 19.6 | 17.5 | 16.4 | 15.2 | 14.6 | 15.0 | 14.7 | 15.3 | 18.1 |
| Average daytime temperature (°C) | 17.0 | 18.0 | 17.7 | 17.0 | 15.8 | 14.3 | 13.0 | 12.3 | 12.4 | 12.4 | 13.6 | 15.3 |
| Average temperature (°C) | 15.9 | 17.0 | 16.7 | 16.0 | 14.8 | 13.3 | 12.1 | 11.2 | 11.3 | 11.7 | 12.7 | 14.4 |
| Average night temperature (°C) | 14.9 | 15.9 | 15.7 | 15.1 | 13.8 | 12.2 | 11.2 | 10.0 | 10.3 | 10.9 | 11.7 | 13.5 |
| Absolute minimum temperature (°C) | 11.9 | 11.7 | 12.5 | 12.3 | 10.2 | 9.7 | 7.9 | 5.8 | 7.3 | 7.8 | 9.9 | 10.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.4 | 13.5 | 12.3 | 11.1 | 10.2 | 9.7 | 9.9 | 10.7 | 11.9 | 13.0 | 14.1 | 14.7 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 10.4 | 9.4 | 8.5 | 6.7 | 4.1 | 4.5 | 5.4 | 6.8 | 7.7 | 6.6 | 9.0 | 8.3 |
| Precipitation (mm) | 88 | 77 | 189 | 206 | 202 | 248 | 217 | 249 | 186 | 219 | 168 | 97 |
| Sunny days | 7 | 12 | 7 | 3 | 6 | 2 | 0 | 4 | 2 | 7 | 2 | 4 |
| Rainy days | 24 | 16 | 24 | 27 | 25 | 28 | 31 | 27 | 28 | 24 | 28 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Tristan da Cunha during the most sunny months:
The largest precipitation sum in Tristan da Cunha is at