Average annual temperature is 13.4 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -4.1 °C
Number of sunny days: 192 days
Number of rainy days: 170 days
Number of snow days: 3 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) | 31.2 | 28.0 | 26.5 | 25.4 | 22.4 | 18.3 | 20.0 | 22.5 | 28.3 | 29.6 | 34.8 | 32.6 |
| Average daytime temperature (°C) | 24.9 | 23.1 | 23.6 | 20.7 | 15.6 | 12.7 | 13.3 | 17.5 | 20.0 | 20.8 | 26.3 | 24.9 |
| Average temperature (°C) | 18.5 | 17.0 | 16.6 | 13.8 | 9.5 | 7.0 | 7.0 | 10.2 | 12.8 | 13.2 | 18.4 | 16.9 |
| Average night temperature (°C) | 12.9 | 12.3 | 11.2 | 8.0 | 4.8 | 2.5 | 1.6 | 3.8 | 5.5 | 7.0 | 11.1 | 11.2 |
| Absolute minimum temperature (°C) | 6.3 | 7.6 | 5.2 | 2.0 | -1.1 | -1.1 | -3.4 | -3.4 | -4.1 | 0.0 | 3.1 | 6.8 |
| 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 | 14.1 |
| 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) | 10.6 | 9.6 | 10.5 | 9.8 | 8.1 | 8.5 | 8.5 | 9.9 | 9.7 | 9.7 | 11.5 | 10.0 |
| Precipitation (mm) | 189 | 153 | 65 | 11 | 69 | 3 | 11 | 1 | 30 | 40 | 23 | 130 |
| Sunny days | 9 | 5 | 8 | 21 | 19 | 25 | 22 | 26 | 24 | 13 | 16 | 4 |
| Rainy days | 22 | 23 | 23 | 9 | 12 | 5 | 6 | 5 | 6 | 18 | 14 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Groenvlei is at