Average annual temperature is 17.3 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: 5.3 °C
Number of sunny days: 174 days
Number of rainy days: 191 days
Look at detailed online map of Harefield
* Weather data for Harefield 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) | 36.4 | 32.3 | 31.8 | 33.6 | 27.3 | 24.5 | 27.5 | 32.1 | 36.2 | 30.1 | 31.4 | 35.5 |
| Average daytime temperature (°C) | 26.4 | 25.7 | 25.7 | 24.3 | 19.9 | 18.5 | 19.0 | 22.6 | 21.6 | 20.1 | 24.6 | 23.2 |
| Average temperature (°C) | 21.7 | 21.1 | 20.4 | 18.5 | 15.1 | 13.7 | 13.3 | 15.7 | 15.5 | 15.6 | 18.8 | 18.7 |
| Average night temperature (°C) | 17.5 | 17.5 | 16.5 | 14.2 | 11.7 | 10.0 | 8.9 | 10.8 | 11.0 | 11.9 | 14.1 | 14.8 |
| Absolute minimum temperature (°C) | 11.7 | 13.0 | 11.5 | 10.3 | 7.8 | 7.0 | 5.3 | 6.5 | 6.4 | 7.4 | 8.8 | 11.6 |
| 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 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.0 | 13.3 | 12.3 | 11.3 | 10.5 | 10.0 | 10.2 | 10.9 | 11.9 | 12.9 | 13.8 | 14.3 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 8.6 | 8.4 | 8.9 | 8.6 | 7.6 | 7.5 | 9.1 | 9.1 | 8.5 | 8.2 | 10.5 | 6.9 |
| Precipitation (mm) | 110 | 132 | 71 | 30 | 115 | 57 | 7 | 7 | 93 | 144 | 50 | 97 |
| Sunny days | 9 | 5 | 10 | 21 | 14 | 22 | 24 | 25 | 19 | 8 | 13 | 4 |
| Rainy days | 22 | 23 | 21 | 9 | 17 | 8 | 7 | 6 | 11 | 23 | 17 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Harefield is at