Average annual temperature is 14.4 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -3.4 °C
Number of sunny days: 227 days
Number of rainy days: 135 days
Number of snow days: 3 days
Look at detailed online map of De Dam
* Weather data for De Dam 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) | 33.7 | 30.3 | 29.6 | 26.7 | 23.3 | 19.3 | 19.8 | 22.6 | 30.8 | 30.6 | 35.9 | 34.3 |
| Average daytime temperature (°C) | 27.4 | 25.2 | 25.2 | 21.2 | 16.5 | 13.1 | 13.4 | 17.7 | 19.7 | 22.4 | 27.6 | 27.0 |
| Average temperature (°C) | 20.4 | 18.6 | 17.9 | 14.3 | 10.3 | 7.4 | 7.3 | 10.8 | 12.8 | 14.9 | 19.8 | 19.0 |
| Average night temperature (°C) | 14.3 | 13.3 | 11.6 | 8.1 | 5.5 | 2.8 | 2.2 | 4.5 | 5.9 | 8.1 | 11.8 | 12.4 |
| Absolute minimum temperature (°C) | 7.1 | 9.3 | 4.1 | 1.7 | -1.8 | -2.1 | -2.9 | -2.6 | -3.4 | 0.9 | 5.8 | 7.9 |
| 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) | 13.9 | 13.2 | 12.3 | 11.3 | 10.5 | 10.1 | 10.3 | 11.0 | 11.9 | 12.9 | 13.7 | 14.1 |
| 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) | 11.8 | 10.9 | 10.8 | 9.7 | 8.1 | 8.6 | 8.8 | 9.9 | 10.1 | 11.0 | 11.9 | 11.4 |
| Precipitation (mm) | 127 | 106 | 33 | 19 | 83 | 6 | 16 | 7 | 46 | 20 | 34 | 81 |
| Sunny days | 10 | 10 | 14 | 22 | 22 | 21 | 24 | 27 | 24 | 22 | 20 | 11 |
| Rainy days | 21 | 18 | 17 | 8 | 9 | 9 | 4 | 4 | 6 | 9 | 10 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in De Dam is at