Average annual temperature is 16.9 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: 0.7 °C
Number of sunny days: 174 days
Number of rainy days: 191 days
Look at detailed online map of Rocky Valley
* Weather data for Rocky Valley 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) | 35.1 | 34.4 | 32.0 | 31.1 | 29.6 | 23.4 | 27.2 | 30.5 | 36.7 | 38.4 | 37.9 | 38.3 |
| Average daytime temperature (°C) | 28.4 | 26.4 | 26.6 | 24.2 | 19.9 | 18.0 | 20.0 | 23.6 | 24.4 | 22.6 | 28.6 | 25.1 |
| Average temperature (°C) | 21.9 | 20.8 | 20.0 | 17.2 | 13.8 | 12.1 | 12.1 | 14.8 | 15.8 | 15.8 | 19.9 | 19.0 |
| Average night temperature (°C) | 16.8 | 16.6 | 15.1 | 11.6 | 8.7 | 7.4 | 5.4 | 7.6 | 8.9 | 10.2 | 13.7 | 14.4 |
| Absolute minimum temperature (°C) | 9.0 | 11.6 | 8.1 | 6.3 | 2.4 | 2.5 | 0.7 | 2.6 | 1.4 | 4.6 | 8.7 | 10.5 |
| 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) | 14.0 | 13.2 | 12.3 | 11.3 | 10.5 | 10.1 | 10.3 | 11.0 | 11.9 | 12.9 | 13.7 | 14.2 |
| 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) | 9.3 | 8.1 | 9.5 | 9.1 | 7.2 | 7.9 | 9.0 | 9.5 | 9.3 | 8.6 | 10.4 | 7.3 |
| Precipitation (mm) | 142 | 140 | 76 | 36 | 103 | 27 | 7 | 8 | 54 | 76 | 40 | 193 |
| Sunny days | 10 | 5 | 8 | 17 | 17 | 23 | 23 | 25 | 19 | 12 | 12 | 3 |
| Rainy days | 21 | 23 | 23 | 13 | 14 | 7 | 8 | 6 | 11 | 19 | 18 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rocky Valley is at