Average annual temperature is 18.7 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: -1.8 °C
Number of sunny days: 266 days
Number of rainy days: 99 days
Look at detailed online map of Roosendal
* Weather data for Roosendal 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) | 34.4 | 31.0 | 31.2 | 28.7 | 27.8 | 24.5 | 24.0 | 30.1 | 32.5 | 35.8 | 37.3 | 36.6 |
| Average daytime temperature (°C) | 30.1 | 26.6 | 27.3 | 25.5 | 22.8 | 20.3 | 19.0 | 23.0 | 27.5 | 29.5 | 31.2 | 30.4 |
| Average temperature (°C) | 23.7 | 21.0 | 21.0 | 17.9 | 15.3 | 11.9 | 11.3 | 14.7 | 18.8 | 21.7 | 23.7 | 23.7 |
| Average night temperature (°C) | 17.0 | 15.9 | 15.1 | 11.1 | 8.8 | 4.5 | 4.2 | 6.6 | 10.0 | 13.7 | 16.2 | 17.0 |
| Absolute minimum temperature (°C) | 13.0 | 11.4 | 11.4 | 6.4 | 1.7 | -1.7 | -1.8 | 0.7 | 2.1 | 8.3 | 7.8 | 11.1 |
| 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 | 10.7 | 11.2 | 11.9 | 12.7 | 13.4 | 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) | 12.3 | 10.0 | 10.5 | 10.6 | 9.7 | 9.5 | 9.7 | 10.3 | 10.9 | 10.7 | 11.4 | 11.5 |
| Precipitation (mm) | 37 | 103 | 38 | 9 | 34 | 2 | 0 | 0 | 4 | 45 | 26 | 77 |
| Sunny days | 19 | 6 | 16 | 25 | 19 | 29 | 31 | 30 | 27 | 24 | 23 | 17 |
| Rainy days | 12 | 22 | 15 | 5 | 12 | 1 | 0 | 1 | 3 | 7 | 7 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Roosendal is at