Average annual temperature is 20.9 °C
Absolute maximum temperature: 38.6 °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 Swartklip
* Weather data for Swartklip 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) | 37.2 | 33.1 | 34.5 | 30.8 | 29.1 | 27.1 | 26.8 | 32.3 | 34.7 | 38.6 | 37.9 | 38.3 |
| Average daytime temperature (°C) | 31.4 | 28.3 | 30.2 | 27.1 | 24.0 | 22.3 | 20.8 | 24.9 | 30.8 | 31.7 | 32.3 | 32.3 |
| Average temperature (°C) | 25.2 | 23.0 | 24.0 | 20.1 | 17.1 | 14.1 | 13.3 | 16.8 | 22.2 | 23.9 | 25.2 | 26.0 |
| Average night temperature (°C) | 18.8 | 18.4 | 18.0 | 13.6 | 10.7 | 6.7 | 6.4 | 8.7 | 13.5 | 16.4 | 18.3 | 20.0 |
| Absolute minimum temperature (°C) | 16.1 | 15.0 | 13.6 | 9.3 | 6.7 | 2.8 | 1.2 | 2.7 | 8.0 | 10.9 | 10.2 | 15.6 |
| 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 | 10.8 | 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) | 12.2 | 10.8 | 10.6 | 10.3 | 9.7 | 9.7 | 9.6 | 10.4 | 11.1 | 10.5 | 11.0 | 11.0 |
| Precipitation (mm) | 27 | 88 | 42 | 3 | 35 | 3 | 5 | 0 | 0 | 65 | 32 | 112 |
| Sunny days | 18 | 9 | 21 | 28 | 21 | 28 | 29 | 31 | 29 | 23 | 23 | 18 |
| Rainy days | 13 | 19 | 10 | 2 | 10 | 2 | 2 | 0 | 1 | 8 | 7 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Swartklip is at