Average annual temperature is 19.8 °C
Absolute maximum temperature: 41.4 °C
Absolute minimum temperature: 4.8 °C
Number of sunny days: 340 days
Number of rainy days: 25 days
Look at detailed online map of Grillenthal
* Weather data for Grillenthal 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) | 35.6 | 40.0 | 34.1 | 36.5 | 33.0 | 28.4 | 29.6 | 37.9 | 32.1 | 35.5 | 41.4 | 34.9 |
| Average daytime temperature (°C) | 30.0 | 30.4 | 27.2 | 29.0 | 25.0 | 20.1 | 23.1 | 24.5 | 24.2 | 27.2 | 30.3 | 30.0 |
| Average temperature (°C) | 23.5 | 23.3 | 20.5 | 21.5 | 17.7 | 14.6 | 16.2 | 17.3 | 17.1 | 20.5 | 22.9 | 22.5 |
| Average night temperature (°C) | 18.2 | 17.7 | 15.3 | 15.2 | 11.9 | 10.1 | 10.6 | 11.5 | 11.3 | 14.9 | 16.4 | 16.5 |
| Absolute minimum temperature (°C) | 14.5 | 15.1 | 12.9 | 10.8 | 7.1 | 8.0 | 4.8 | 6.3 | 9.0 | 12.2 | 12.3 | 14.1 |
| 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) | 13.6 | 13.0 | 12.2 | 11.4 | 10.8 | 10.5 | 10.6 | 11.2 | 11.9 | 12.7 | 13.4 | 13.8 |
| 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) | 12.2 | 11.9 | 11.2 | 10.2 | 9.4 | 8.2 | 9.6 | 9.7 | 10.7 | 11.4 | 12.2 | 12.6 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 4 | 75 | 11 | 0 | 3 | 1 | 0 | 0 |
| Sunny days | 30 | 26 | 30 | 29 | 28 | 24 | 26 | 30 | 26 | 30 | 30 | 31 |
| Rainy days | 1 | 2 | 1 | 1 | 3 | 6 | 5 | 1 | 4 | 1 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Grillenthal is at