Average annual temperature is 18.1 °C
Absolute maximum temperature: 40.1 °C
Absolute minimum temperature: 4.3 °C
Number of sunny days: 304 days
Number of rainy days: 61 days
Look at detailed online map of Zwartwater
* Weather data for Zwartwater 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) | 38.1 | 33.2 | 39.8 | 40.1 | 35.1 | 29.7 | 30.6 | 36.0 | 34.8 | 37.7 | 39.4 | 29.3 |
| Average daytime temperature (°C) | 27.6 | 27.4 | 26.4 | 27.9 | 22.5 | 19.7 | 22.1 | 23.9 | 22.5 | 27.5 | 29.3 | 26.8 |
| Average temperature (°C) | 20.8 | 20.7 | 19.7 | 19.6 | 15.5 | 14.2 | 15.1 | 16.4 | 15.3 | 19.4 | 20.9 | 19.9 |
| Average night temperature (°C) | 15.5 | 15.9 | 15.1 | 13.5 | 10.2 | 10.1 | 9.6 | 10.8 | 9.5 | 13.4 | 14.3 | 14.4 |
| Absolute minimum temperature (°C) | 11.9 | 11.8 | 10.6 | 8.1 | 6.0 | 7.6 | 4.3 | 5.3 | 5.5 | 10.7 | 12.0 | 11.1 |
| 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) | 13.7 | 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) | 11.9 | 10.8 | 10.2 | 9.9 | 9.1 | 8.0 | 9.4 | 9.2 | 10.6 | 11.0 | 12.0 | 12.3 |
| Precipitation (mm) | 0 | 2 | 7 | 0 | 11 | 23 | 14 | 1 | 10 | 3 | 1 | 0 |
| Sunny days | 30 | 22 | 21 | 26 | 27 | 19 | 27 | 28 | 23 | 26 | 27 | 28 |
| Rainy days | 1 | 6 | 10 | 4 | 4 | 11 | 4 | 3 | 7 | 5 | 3 | 3 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Zwartwater is at