Average annual temperature is 10.9 °C
Absolute maximum temperature: 39.4 °C
Absolute minimum temperature: -22.6 °C
Number of sunny days: 221 days
Number of rainy days: 113 days
Number of snow days: 31 days
Look at detailed online map of Saint Helena
* Weather data for Saint Helena United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 3.3 | 6.5 | 19.0 | 29.1 | 32.3 | 35.3 | 37.5 | 39.4 | 37.3 | 32.6 | 18.5 | 13.2 |
| Average daytime temperature (°C) | -3.1 | -0.1 | 6.1 | 16.3 | 25.7 | 29.9 | 29.5 | 30.9 | 27.7 | 17.0 | 11.2 | 5.5 |
| Average temperature (°C) | -6.2 | -5.0 | -0.5 | 9.7 | 19.1 | 24.2 | 23.7 | 24.8 | 21.7 | 11.9 | 5.5 | 0.8 |
| Average night temperature (°C) | -9.5 | -9.3 | -4.8 | 4.3 | 13.2 | 18.4 | 18.5 | 19.7 | 16.6 | 7.8 | 1.1 | -2.9 |
| Absolute minimum temperature (°C) | -22.6 | -22.3 | -12.5 | -5.5 | 2.8 | 10.8 | 12.0 | 13.4 | 11.0 | -6.6 | -7.0 | -7.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.2 | 7.2 | 7.3 | 9.9 | 11.7 | 13.2 | 11.9 | 11.4 | 10.1 | 7.2 | 6.8 | 5.6 |
| Precipitation (mm) | 76 | 36 | 37 | 26 | 54 | 78 | 197 | 49 | 26 | 120 | 8 | 50 |
| Sunny days | 20 | 18 | 19 | 16 | 17 | 19 | 13 | 19 | 17 | 16 | 24 | 23 |
| Rainy days | 5 | 3 | 3 | 12 | 14 | 11 | 18 | 12 | 13 | 14 | 3 | 5 |
| Snow days | 6 | 7 | 9 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 3 |
The best time to visit Saint Helena during the most sunny months:
Months with the longest average daylight duration in Saint Helena:
The largest precipitation sum in Saint Helena is at