Average annual temperature is 21.1 °C
Absolute maximum temperature: 25.5 °C
Absolute minimum temperature: 15.5 °C
Number of sunny days: 55
Number of rainy days: 310
Number of snow days:
Average annual precipitation: 382 mm
Look at detailed online map of Jamestown
* Weather data for Jamestown Saint Helena is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 23.6 | 24.6 | 24.4 | 24.2 | 23.4 | 22.1 | 22.8 | 21.7 | 22 | 22.2 | 25.5 | 25 |
| Average daytime temperature (°C) | 22.9 | 23.7 | 23.8 | 23.4 | 22.6 | 21.3 | 21.4 | 20.7 | 20.4 | 21 | 23.2 | 24.2 |
| Average temperature (°C) | 22.4 | 23.1 | 23.2 | 22.8 | 22 | 20.5 | 19.5 | 19 | 18.6 | 19.2 | 20.9 | 22 |
| Average night temperature (°C) | 21.8 | 22.4 | 22.4 | 22.1 | 21.2 | 19.6 | 17.9 | 17.6 | 17.2 | 17.7 | 19 | 20.3 |
| Absolute minimum temperature (°C) | 20.9 | 20.7 | 21 | 20.7 | 19.5 | 17.2 | 15.5 | 15.6 | 16.2 | 16 | 17.2 | 19.3 |
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.1 | 12.8 | 12.4 | 12 | 11.5 | 11.2 | 11.4 | 11.8 | 12.2 | 12.7 | 13 | 13.1 |
| Daylight mean duration (h) | 13 | 12.6 | 12.2 | 11.7 | 11.4 | 11.2 | 11.3 | 11.6 | 12 | 12.5 | 12.9 | 13.1 |
| Daylight minimum duration (h) | 12.8 | 12.4 | 12 | 11.6 | 11.3 | 11.2 | 11.2 | 11.4 | 11.8 | 12.2 | 12.7 | 13 |
| Sunshine mean duration (h) | 11.6 | 11.6 | 10.9 | 10.7 | 10.1 | 10.1 | 9.8 | 9 | 9.5 | 9.8 | 11 | 11.5 |
| Precipitation (mm) | 18 | 17 | 28 | 12 | 22 | 29 | 48 | 30 | 43 | 39 | 26 | 69 |
| Sunny days | 5 | 7 | 2 | 7 | 7 | 4 | 7 | 3 | 3 | 4 | 6 | |
| Rainy days | 26 | 21 | 29 | 23 | 24 | 26 | 24 | 28 | 27 | 27 | 24 | 31 |
The largest precipitation sum in Jamestown is at