Average annual temperature is 16.1 °C
Absolute maximum temperature: 42.9 °C
Absolute minimum temperature: 4.4 °C
Number of sunny days: 258 days
Number of rainy days: 107 days
Look at detailed online map of Koelfontein
* Weather data for Koelfontein South Africa is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.9 | 29.2 | 34.9 | 34.6 | 25.6 | 25.7 | 26.5 | 32.8 | 30.4 | 34.4 | 42.9 | 36.9 |
| Average daytime temperature (°C) | 23.9 | 23.7 | 22.6 | 23.3 | 18.9 | 16.8 | 18.4 | 20.1 | 18.1 | 24.3 | 24.5 | 23.7 |
| Average temperature (°C) | 18.9 | 18.8 | 18.0 | 16.8 | 13.3 | 13.0 | 12.6 | 14.2 | 13.0 | 17.7 | 18.6 | 18.2 |
| Average night temperature (°C) | 14.5 | 14.4 | 14.3 | 11.5 | 8.6 | 10.0 | 8.3 | 9.5 | 8.8 | 12.4 | 13.1 | 13.2 |
| Absolute minimum temperature (°C) | 12.3 | 10.3 | 11.4 | 6.3 | 4.8 | 7.5 | 4.7 | 4.9 | 4.4 | 7.6 | 9.4 | 10.2 |
| 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 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 |
| Daylight mean duration (h) | 13.9 | 13.2 | 12.3 | 11.3 | 10.5 | 10.2 | 10.3 | 11.0 | 11.9 | 12.9 | 13.7 | 14.1 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 12.4 | 10.9 | 10.2 | 9.7 | 8.5 | 7.3 | 8.6 | 9.0 | 9.7 | 11.5 | 11.5 | 12.5 |
| Precipitation (mm) | 6 | 18 | 22 | 5 | 22 | 69 | 37 | 12 | 32 | 5 | 9 | 2 |
| Sunny days | 26 | 19 | 15 | 25 | 26 | 13 | 22 | 24 | 19 | 22 | 21 | 26 |
| Rainy days | 5 | 9 | 16 | 5 | 5 | 17 | 9 | 7 | 11 | 9 | 9 | 5 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Koelfontein is at