Average annual temperature is 16.4 °C
Absolute maximum temperature: 39.9 °C
Absolute minimum temperature: -2.6 °C
Number of sunny days: 248 days
Number of rainy days: 117 days
Look at detailed online map of Groenkloof
* Weather data for Groenkloof 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) | 38.2 | 34.5 | 32.8 | 30.8 | 27.0 | 22.2 | 23.9 | 27.4 | 33.7 | 35.0 | 39.9 | 38.9 |
| Average daytime temperature (°C) | 31.3 | 28.1 | 28.6 | 24.6 | 19.0 | 16.5 | 17.0 | 21.2 | 22.8 | 24.7 | 31.8 | 29.8 |
| Average temperature (°C) | 22.9 | 20.7 | 20.3 | 16.4 | 11.7 | 9.6 | 9.3 | 12.4 | 14.5 | 16.3 | 22.2 | 20.8 |
| Average night temperature (°C) | 15.1 | 14.1 | 13.0 | 9.2 | 5.9 | 4.2 | 3.0 | 4.6 | 6.4 | 8.8 | 12.7 | 13.4 |
| Absolute minimum temperature (°C) | 6.2 | 7.7 | 4.6 | 2.1 | -0.4 | 0.9 | -2.1 | -2.6 | -2.2 | 3.1 | 6.2 | 9.4 |
| 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) | 13.9 | 13.2 | 12.3 | 11.3 | 10.5 | 10.1 | 10.3 | 11.0 | 11.9 | 12.9 | 13.7 | 14.2 |
| 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) | 11.7 | 10.8 | 10.7 | 9.5 | 7.4 | 8.7 | 8.6 | 10.0 | 10.0 | 10.6 | 11.8 | 11.3 |
| Precipitation (mm) | 78 | 75 | 17 | 10 | 80 | 9 | 16 | 3 | 30 | 41 | 16 | 43 |
| Sunny days | 14 | 15 | 18 | 24 | 19 | 21 | 24 | 27 | 24 | 24 | 21 | 17 |
| Rainy days | 17 | 13 | 13 | 6 | 12 | 9 | 7 | 4 | 6 | 7 | 9 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Groenkloof is at