Average annual temperature is 18.3 °C
Absolute maximum temperature: 42.0 °C
Absolute minimum temperature: 1.2 °C
Number of sunny days: 243 days
Number of rainy days: 122 days
Look at detailed online map of Clanwilliam
* Weather data for Clanwilliam 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) | 42.0 | 38.5 | 39.3 | 36.0 | 32.4 | 22.9 | 24.0 | 29.5 | 27.8 | 37.1 | 40.3 | 38.0 |
| Average daytime temperature (°C) | 34.2 | 32.9 | 27.1 | 25.0 | 20.7 | 16.1 | 17.5 | 20.0 | 18.3 | 26.7 | 30.7 | 31.6 |
| Average temperature (°C) | 25.7 | 25.0 | 20.5 | 18.5 | 14.7 | 12.3 | 11.7 | 13.4 | 12.7 | 19.4 | 22.4 | 23.7 |
| Average night temperature (°C) | 17.9 | 18.0 | 15.0 | 12.6 | 9.7 | 8.6 | 6.5 | 7.8 | 7.5 | 12.1 | 14.7 | 16.4 |
| Absolute minimum temperature (°C) | 11.9 | 11.3 | 9.8 | 6.2 | 5.1 | 5.3 | 1.2 | 2.0 | 1.5 | 5.2 | 10.3 | 13.5 |
| 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 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.0 | 13.2 | 12.3 | 11.3 | 10.5 | 10.1 | 10.3 | 11.0 | 11.9 | 12.9 | 13.8 | 14.2 |
| 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 | 14.0 |
| Sunshine mean duration (h) | 12.9 | 11.7 | 10.2 | 9.0 | 8.6 | 6.0 | 8.4 | 8.7 | 9.1 | 11.8 | 12.0 | 13.0 |
| Precipitation (mm) | 7 | 18 | 93 | 20 | 39 | 245 | 52 | 44 | 113 | 5 | 17 | 8 |
| Sunny days | 26 | 25 | 16 | 17 | 24 | 6 | 20 | 19 | 16 | 26 | 22 | 26 |
| Rainy days | 5 | 3 | 15 | 13 | 7 | 24 | 11 | 12 | 14 | 5 | 8 | 5 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Clanwilliam during the most sunny months:
The largest precipitation sum in Clanwilliam is at