Average annual temperature is 20.4 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: -2.7 °C
Number of sunny days: 339 days
Number of rainy days: 26 days
Look at detailed online map of Grootfontein
* Weather data for Grootfontein Namibia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 36.1 | 35.4 | 34.8 | 31.7 | 30.3 | 25.8 | 27.0 | 28.8 | 33.8 | 36.8 | 37.3 | 37.7 |
| Average daytime temperature (°C) | 33.1 | 33.0 | 32.0 | 28.3 | 24.5 | 21.2 | 20.3 | 24.4 | 26.8 | 31.7 | 33.0 | 33.8 |
| Average temperature (°C) | 26.5 | 25.4 | 23.0 | 20.8 | 16.7 | 12.3 | 12.4 | 15.8 | 17.6 | 23.4 | 25.8 | 25.5 |
| Average night temperature (°C) | 19.3 | 17.2 | 14.0 | 13.0 | 9.3 | 4.5 | 4.7 | 7.3 | 8.4 | 14.2 | 17.4 | 17.3 |
| Absolute minimum temperature (°C) | 11.8 | 9.6 | 9.1 | 8.0 | 0.2 | 0.0 | -2.7 | 0.0 | -0.6 | 7.9 | 7.1 | 13.3 |
| 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) | 13.5 | 12.9 | 12.2 | 11.5 | 10.9 | 10.6 | 10.7 | 11.3 | 11.9 | 12.7 | 13.3 | 13.7 |
| 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) | 12.1 | 11.9 | 11.4 | 10.6 | 9.8 | 9.7 | 9.8 | 10.2 | 11.1 | 11.5 | 12.3 | 12.7 |
| Precipitation (mm) | 8 | 4 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 9 |
| Sunny days | 23 | 26 | 31 | 27 | 31 | 29 | 31 | 30 | 30 | 27 | 26 | 28 |
| Rainy days | 8 | 2 | 0 | 3 | 0 | 1 | 0 | 1 | 0 | 4 | 4 | 3 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Grootfontein is at