Average annual temperature is 21.5 °C
Absolute maximum temperature: 39.4 °C
Absolute minimum temperature: -1.4 °C
Number of sunny days: 310 days
Number of rainy days: 55 days
Look at detailed online map of Derwent
* Weather data for Derwent 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 | 37.3 | 35.7 | 32.0 | 31.0 | 27.2 | 28.4 | 31.0 | 35.4 | 38.5 | 39.4 | 38.7 |
| Average daytime temperature (°C) | 34.5 | 32.1 | 31.7 | 28.7 | 24.6 | 20.9 | 21.4 | 24.9 | 27.4 | 32.3 | 34.8 | 34.5 |
| Average temperature (°C) | 28.3 | 25.9 | 24.9 | 20.9 | 17.0 | 12.7 | 13.3 | 16.4 | 18.9 | 24.5 | 27.7 | 27.8 |
| Average night temperature (°C) | 20.8 | 19.5 | 17.5 | 13.2 | 9.5 | 4.9 | 5.9 | 8.1 | 9.6 | 15.6 | 19.3 | 20.5 |
| Absolute minimum temperature (°C) | 14.3 | 14.2 | 12.6 | 5.7 | 2.0 | 0.3 | -1.4 | 2.9 | 2.8 | 9.1 | 10.5 | 15.8 |
| 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) | 13.6 | 13.0 | 12.2 | 11.5 | 10.8 | 10.5 | 10.6 | 11.2 | 11.9 | 12.7 | 13.4 | 13.8 |
| 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) | 12.5 | 11.3 | 10.8 | 10.4 | 9.6 | 9.5 | 9.6 | 10.3 | 10.8 | 11.4 | 11.8 | 12.2 |
| Precipitation (mm) | 4 | 43 | 8 | 7 | 35 | 2 | 0 | 0 | 1 | 2 | 8 | 50 |
| Sunny days | 25 | 17 | 23 | 27 | 26 | 28 | 30 | 31 | 28 | 27 | 25 | 23 |
| Rainy days | 6 | 11 | 8 | 3 | 5 | 2 | 1 | 0 | 2 | 4 | 5 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Derwent is at