Average annual temperature is 15.1 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -2.9 °C
Number of sunny days: 232 days
Number of rainy days: 133 days
Look at detailed online map of Swartfontein
* Weather data for Swartfontein 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) | 32.6 | 30.3 | 27.4 | 25.9 | 23.6 | 20.5 | 21.1 | 22.2 | 29.2 | 32.8 | 34.6 | 32.9 |
| Average daytime temperature (°C) | 27.7 | 25.0 | 24.8 | 22.2 | 17.7 | 14.3 | 15.0 | 18.5 | 21.9 | 25.1 | 27.8 | 26.7 |
| Average temperature (°C) | 20.8 | 18.9 | 17.8 | 14.8 | 10.9 | 7.7 | 7.6 | 10.8 | 14.2 | 17.2 | 20.5 | 19.8 |
| Average night temperature (°C) | 14.6 | 13.6 | 11.9 | 8.3 | 5.5 | 2.1 | 1.5 | 3.7 | 6.5 | 9.4 | 12.8 | 13.6 |
| Absolute minimum temperature (°C) | 7.2 | 9.5 | 6.4 | 3.6 | -1.7 | -1.4 | -2.9 | -2.8 | -1.3 | 3.9 | 4.1 | 9.8 |
| 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 | 13.0 | 14.0 |
| Daylight mean duration (h) | 13.8 | 13.1 | 12.3 | 11.4 | 10.6 | 10.3 | 10.4 | 11.1 | 11.9 | 12.8 | 13.6 | 14.0 |
| 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 | 13.0 |
| Sunshine mean duration (h) | 12.2 | 10.0 | 10.5 | 10.0 | 9.0 | 8.9 | 9.0 | 10.1 | 10.1 | 10.9 | 11.8 | 11.5 |
| Precipitation (mm) | 89 | 143 | 71 | 21 | 36 | 5 | 5 | 1 | 24 | 43 | 9 | 127 |
| Sunny days | 13 | 8 | 10 | 23 | 19 | 25 | 26 | 28 | 25 | 23 | 21 | 11 |
| Rainy days | 18 | 20 | 21 | 7 | 12 | 5 | 5 | 3 | 5 | 8 | 9 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Swartfontein is at