Average annual temperature is 22.9 °C
Absolute maximum temperature: 41.0 °C
Absolute minimum temperature: 4.8 °C
Number of sunny days: 269 days
Number of rainy days: 96 days
Look at detailed online map of Royston
* Weather data for Royston 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) | 37.8 | 33.0 | 36.0 | 35.1 | 33.4 | 31.5 | 30.2 | 35.9 | 38.0 | 39.3 | 41.0 | 40.0 |
| Average daytime temperature (°C) | 32.5 | 29.2 | 31.3 | 30.9 | 27.5 | 27.1 | 23.7 | 26.8 | 32.0 | 32.7 | 34.0 | 31.4 |
| Average temperature (°C) | 26.1 | 23.9 | 25.0 | 23.8 | 20.7 | 18.6 | 16.3 | 19.2 | 24.1 | 24.9 | 27.1 | 25.6 |
| Average night temperature (°C) | 20.0 | 19.7 | 18.7 | 16.9 | 14.9 | 11.3 | 9.5 | 12.1 | 16.6 | 17.6 | 20.3 | 20.2 |
| Absolute minimum temperature (°C) | 15.6 | 15.5 | 15.3 | 11.8 | 10.8 | 7.6 | 5.4 | 4.8 | 12.2 | 12.0 | 12.0 | 16.8 |
| 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 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.4 | 12.9 | 12.2 | 11.6 | 11.0 | 10.8 | 10.9 | 11.3 | 12.0 | 12.6 | 13.2 | 13.5 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 10.9 | 9.5 | 10.9 | 10.3 | 9.2 | 9.8 | 9.4 | 10.1 | 10.1 | 10.3 | 10.9 | 9.8 |
| Precipitation (mm) | 43 | 141 | 3 | 1 | 8 | 0 | 11 | 0 | 5 | 33 | 7 | 116 |
| Sunny days | 16 | 6 | 22 | 28 | 21 | 28 | 27 | 29 | 25 | 26 | 24 | 17 |
| Rainy days | 15 | 22 | 9 | 2 | 10 | 2 | 4 | 2 | 5 | 5 | 6 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Royston is at