Average annual temperature is 17.7 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -1.5 °C
Number of sunny days: 194 days
Number of rainy days: 171 days
Look at detailed online map of Roseville
* Weather data for Roseville 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 | 31.5 | 31.1 | 30.9 | 28.7 | 26.4 | 27.8 | 30.5 | 35.5 | 37.1 | 37.9 | 36.7 |
| Average daytime temperature (°C) | 29.2 | 26.0 | 27.0 | 26.4 | 22.0 | 20.8 | 20.0 | 23.9 | 29.2 | 26.2 | 29.9 | 28.1 |
| Average temperature (°C) | 22.1 | 20.6 | 20.3 | 18.1 | 14.4 | 11.8 | 10.6 | 14.0 | 19.0 | 18.5 | 22.0 | 21.3 |
| Average night temperature (°C) | 15.6 | 16.7 | 14.9 | 11.3 | 8.5 | 4.1 | 2.8 | 5.4 | 10.1 | 12.1 | 15.1 | 16.0 |
| Absolute minimum temperature (°C) | 12.9 | 14.1 | 11.0 | 6.8 | 1.9 | 0.1 | -1.5 | -0.1 | 5.7 | 6.4 | 7.4 | 10.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.7 | 13.1 | 12.3 | 11.4 | 10.7 | 10.3 | 10.5 | 11.1 | 11.9 | 12.8 | 13.5 | 13.9 |
| 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) | 10.9 | 8.6 | 9.9 | 9.9 | 8.8 | 9.3 | 8.9 | 9.9 | 10.3 | 8.4 | 10.1 | 9.0 |
| Precipitation (mm) | 79 | 222 | 65 | 4 | 60 | 4 | 6 | 1 | 17 | 84 | 29 | 163 |
| Sunny days | 15 | 3 | 7 | 22 | 16 | 27 | 25 | 27 | 20 | 14 | 11 | 7 |
| Rainy days | 16 | 25 | 24 | 8 | 15 | 3 | 6 | 4 | 10 | 17 | 19 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Roseville is at