Average annual temperature is 25.1 °C
Absolute maximum temperature: 28 °C
Absolute minimum temperature: 21.7 °C
Number of sunny days: 202
Number of rainy days: 163
Number of snow days:
Average annual precipitation: 180 mm
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* Weather data for Georgetown Saint Helena is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 26.3 | 27.3 | 28 | 28 | 27.2 | 26.8 | 26.3 | 25.6 | 25.3 | 25.5 | 26 | 26.8 |
| Average daytime temperature (°C) | 25.5 | 26.5 | 27.2 | 27.4 | 26.8 | 26 | 25.4 | 24.8 | 24.3 | 24.3 | 25.1 | 26.2 |
| Average temperature (°C) | 25.1 | 26.1 | 26.5 | 26.8 | 26.2 | 25.3 | 24.6 | 23.8 | 23.4 | 23.4 | 24.1 | 25.3 |
| Average night temperature (°C) | 24.6 | 25.6 | 25.7 | 26.2 | 25.6 | 24.6 | 23.6 | 23 | 22.5 | 22.6 | 23.3 | 24.5 |
| Absolute minimum temperature (°C) | 23.8 | 24.9 | 24.4 | 25 | 24.8 | 23.2 | 22.4 | 21.9 | 21.7 | 22.1 | 22.1 | 23.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.6 | 12.5 | 12.3 | 12 | 11.8 | 11.7 | 11.8 | 12 | 12.2 | 12.4 | 12.6 | 12.6 |
| Daylight mean duration (h) | 12.5 | 12.4 | 12.2 | 11.9 | 11.8 | 11.7 | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 |
| Daylight minimum duration (h) | 12.5 | 12.3 | 12 | 11.8 | 11.7 | 11.7 | 11.7 | 11.8 | 12 | 12.2 | 12.4 | 12.6 |
| Sunshine mean duration (h) | 11.7 | 11.5 | 10.6 | 11 | 10.8 | 10.5 | 10.5 | 10.2 | 10.1 | 10 | 10.8 | 11.7 |
| Precipitation (mm) | 3 | 3 | 102 | 35 | 8 | 11 | 2 | 3 | 6 | 2 | 1 | 4 |
| Sunny days | 17 | 20 | 9 | 12 | 12 | 12 | 21 | 17 | 12 | 22 | 26 | 22 |
| Rainy days | 14 | 8 | 22 | 18 | 19 | 18 | 10 | 14 | 18 | 9 | 4 | 9 |
The largest precipitation sum in Georgetown is at