Average annual temperature is 22.0 °C
Absolute maximum temperature: 39.3 °C
Absolute minimum temperature: 3.3 °C
Number of sunny days: 277 days
Number of rainy days: 88 days
Look at detailed online map of Groenvlei
* Weather data for Groenvlei 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) | 36.8 | 33.6 | 35.0 | 31.9 | 31.0 | 30.1 | 27.3 | 33.8 | 35.9 | 39.3 | 38.8 | 39.3 |
| Average daytime temperature (°C) | 31.3 | 28.8 | 30.1 | 28.7 | 26.1 | 24.5 | 21.7 | 25.9 | 31.6 | 32.4 | 33.3 | 32.1 |
| Average temperature (°C) | 25.3 | 23.5 | 24.0 | 22.0 | 19.2 | 16.7 | 14.5 | 18.1 | 23.4 | 24.9 | 26.3 | 25.9 |
| Average night temperature (°C) | 19.4 | 18.8 | 18.0 | 15.7 | 13.5 | 10.3 | 8.2 | 10.9 | 15.4 | 17.5 | 19.6 | 19.9 |
| Absolute minimum temperature (°C) | 16.4 | 16.7 | 13.3 | 12.0 | 8.1 | 5.7 | 3.3 | 4.5 | 9.2 | 12.4 | 9.6 | 14.7 |
| 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 | 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) | 12.2 | 10.8 | 10.5 | 10.4 | 9.9 | 9.7 | 9.7 | 10.4 | 11.1 | 10.7 | 11.5 | 10.7 |
| Precipitation (mm) | 22 | 87 | 25 | 3 | 20 | 0 | 10 | 0 | 1 | 35 | 18 | 76 |
| Sunny days | 20 | 6 | 22 | 27 | 22 | 29 | 29 | 31 | 28 | 24 | 20 | 19 |
| Rainy days | 11 | 22 | 9 | 3 | 9 | 1 | 2 | 0 | 2 | 7 | 10 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Groenvlei is at