Average annual temperature is 18.9 °C
Absolute maximum temperature: 38.9 °C
Absolute minimum temperature: -1.2 °C
Number of sunny days: 278 days
Number of rainy days: 87 days
Look at detailed online map of Postmasburg
* Weather data for Postmasburg 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) | 37.5 | 36.4 | 33.3 | 29.6 | 28.3 | 23.8 | 24.5 | 26.5 | 32.9 | 37.2 | 38.9 | 38.3 |
| Average daytime temperature (°C) | 32.7 | 30.6 | 29.7 | 26.6 | 22.1 | 17.6 | 18.1 | 22.4 | 24.0 | 29.4 | 32.8 | 32.5 |
| Average temperature (°C) | 25.8 | 23.7 | 22.3 | 18.5 | 14.6 | 10.6 | 10.7 | 14.3 | 15.6 | 21.3 | 24.9 | 25.1 |
| Average night temperature (°C) | 18.8 | 17.0 | 15.2 | 11.0 | 7.5 | 4.5 | 4.2 | 7.2 | 7.3 | 13.1 | 16.6 | 17.6 |
| Absolute minimum temperature (°C) | 11.4 | 11.3 | 9.8 | 4.6 | 1.1 | 0.9 | -1.2 | 0.8 | 0.3 | 5.8 | 9.0 | 13.0 |
| 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) | 13.7 | 13.1 | 12.3 | 11.4 | 10.7 | 10.4 | 10.5 | 11.1 | 11.9 | 12.8 | 13.5 | 13.9 |
| 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) | 12.5 | 11.7 | 10.9 | 10.3 | 9.6 | 9.1 | 9.2 | 10.2 | 10.4 | 11.4 | 12.0 | 12.3 |
| Precipitation (mm) | 32 | 26 | 11 | 11 | 15 | 11 | 2 | 0 | 19 | 15 | 15 | 89 |
| Sunny days | 20 | 16 | 18 | 24 | 23 | 26 | 28 | 29 | 25 | 27 | 21 | 21 |
| Rainy days | 11 | 12 | 13 | 6 | 8 | 4 | 3 | 2 | 5 | 4 | 9 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Postmasburg is at