Average annual temperature is 21.1 °C
Absolute maximum temperature: 39.6 °C
Absolute minimum temperature: -1.3 °C
Number of sunny days: 296 days
Number of rainy days: 69 days
Look at detailed online map of Klein Harrow
* Weather data for Klein Harrow 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) | 37.0 | 36.5 | 35.0 | 31.4 | 30.4 | 26.2 | 27.7 | 30.8 | 35.1 | 38.7 | 38.8 | 39.6 |
| Average daytime temperature (°C) | 33.7 | 31.4 | 31.3 | 28.3 | 24.4 | 20.5 | 20.9 | 24.6 | 27.5 | 32.1 | 34.2 | 33.9 |
| Average temperature (°C) | 27.8 | 25.3 | 24.4 | 20.4 | 16.9 | 12.2 | 13.0 | 16.1 | 18.9 | 24.3 | 27.4 | 27.2 |
| Average night temperature (°C) | 20.4 | 19.0 | 17.4 | 12.7 | 9.4 | 4.6 | 5.5 | 7.7 | 9.7 | 15.5 | 19.1 | 20.0 |
| Absolute minimum temperature (°C) | 12.7 | 13.5 | 13.4 | 6.2 | 1.9 | 0.3 | -1.3 | 2.7 | 3.1 | 9.3 | 10.1 | 13.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.6 | 13.0 | 12.2 | 11.5 | 10.8 | 10.5 | 10.7 | 11.2 | 11.9 | 12.7 | 13.4 | 13.8 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 12.7 | 11.2 | 10.8 | 10.5 | 9.5 | 9.5 | 9.7 | 10.3 | 10.9 | 11.3 | 11.7 | 12.0 |
| Precipitation (mm) | 3 | 44 | 14 | 2 | 16 | 1 | 0 | 0 | 3 | 0 | 11 | 67 |
| Sunny days | 22 | 13 | 20 | 25 | 26 | 27 | 30 | 31 | 28 | 29 | 22 | 23 |
| Rainy days | 9 | 15 | 11 | 5 | 5 | 3 | 1 | 0 | 2 | 2 | 8 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Klein Harrow is at