Average annual temperature is 17.4 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: 2.9 °C
Number of sunny days: 136 days
Number of rainy days: 229 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) | 30.2 | 29.7 | 30.0 | 29.4 | 26.7 | 27.3 | 24.6 | 30.5 | 33.4 | 33.3 | 32.4 | 29.3 |
| Average daytime temperature (°C) | 25.8 | 24.0 | 24.5 | 24.4 | 21.3 | 22.4 | 18.6 | 20.9 | 24.7 | 22.9 | 25.7 | 24.2 |
| Average temperature (°C) | 20.3 | 19.5 | 19.3 | 18.0 | 15.9 | 15.3 | 12.2 | 14.4 | 18.1 | 17.3 | 19.7 | 19.4 |
| Average night temperature (°C) | 15.4 | 16.7 | 15.1 | 12.8 | 11.8 | 8.9 | 6.6 | 8.4 | 11.9 | 12.3 | 14.7 | 15.5 |
| Absolute minimum temperature (°C) | 11.1 | 13.8 | 10.2 | 9.0 | 7.1 | 6.0 | 2.9 | 4.8 | 8.0 | 7.0 | 8.7 | 11.5 |
| 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) | 10.9 | 8.6 | 10.4 | 9.9 | 9.0 | 9.7 | 8.7 | 9.5 | 9.3 | 8.3 | 10.3 | 8.8 |
| Precipitation (mm) | 143 | 389 | 88 | 46 | 97 | 5 | 74 | 16 | 42 | 98 | 101 | 254 |
| Sunny days | 10 | 1 | 5 | 11 | 9 | 22 | 20 | 17 | 18 | 10 | 8 | 5 |
| Rainy days | 21 | 27 | 26 | 19 | 22 | 8 | 11 | 14 | 12 | 21 | 22 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Swartfontein is at