Average annual temperature is 18.1 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: 0.1 °C
Number of sunny days: 245 days
Number of rainy days: 120 days
Look at detailed online map of Kaalvallei
* Weather data for Kaalvallei 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) | 31.9 | 28.9 | 29.7 | 27.2 | 26.0 | 25.4 | 23.8 | 30.1 | 32.0 | 33.6 | 33.5 | 33.2 |
| Average daytime temperature (°C) | 26.7 | 24.6 | 25.6 | 24.4 | 22.0 | 21.2 | 18.1 | 22.0 | 27.6 | 28.1 | 28.9 | 27.4 |
| Average temperature (°C) | 20.7 | 19.5 | 19.8 | 18.2 | 15.7 | 14.1 | 11.6 | 14.8 | 19.9 | 20.6 | 21.7 | 21.3 |
| Average night temperature (°C) | 15.0 | 15.3 | 14.0 | 12.4 | 10.3 | 7.9 | 5.6 | 8.0 | 11.7 | 13.2 | 15.0 | 15.3 |
| Absolute minimum temperature (°C) | 12.3 | 12.1 | 9.6 | 8.8 | 7.0 | 4.3 | 0.1 | 2.5 | 6.9 | 7.8 | 7.3 | 11.4 |
| 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 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.4 | 12.9 | 12.2 | 11.5 | 10.9 | 10.7 | 10.8 | 11.3 | 12.0 | 12.7 | 13.3 | 13.6 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 11.9 | 10.0 | 10.4 | 10.3 | 9.7 | 9.8 | 9.5 | 10.3 | 10.9 | 10.6 | 11.5 | 11.0 |
| Precipitation (mm) | 37 | 118 | 47 | 8 | 39 | 0 | 10 | 0 | 6 | 53 | 43 | 128 |
| Sunny days | 17 | 7 | 16 | 22 | 20 | 29 | 28 | 31 | 26 | 24 | 14 | 11 |
| Rainy days | 14 | 21 | 15 | 8 | 11 | 1 | 3 | 0 | 4 | 7 | 16 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Kaalvallei is at