Average annual temperature is 19.5 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: 0.7 °C
Number of sunny days: 250 days
Number of rainy days: 115 days
Look at detailed online map of Twinvallei
* Weather data for Twinvallei 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) | 32.6 | 29.3 | 31.5 | 29.3 | 27.6 | 26.8 | 25.6 | 31.5 | 33.7 | 35.6 | 34.7 | 34.9 |
| Average daytime temperature (°C) | 28.1 | 26.0 | 27.4 | 26.1 | 23.2 | 22.1 | 19.4 | 23.1 | 28.6 | 29.1 | 29.6 | 28.2 |
| Average temperature (°C) | 22.1 | 20.9 | 21.4 | 19.9 | 17.2 | 15.9 | 13.3 | 16.3 | 21.2 | 21.6 | 22.7 | 22.2 |
| Average night temperature (°C) | 16.0 | 16.6 | 15.3 | 13.9 | 12.0 | 9.9 | 7.4 | 9.7 | 14.0 | 14.3 | 16.2 | 16.7 |
| Absolute minimum temperature (°C) | 13.3 | 13.6 | 11.6 | 10.1 | 8.6 | 5.3 | 0.7 | 4.9 | 9.1 | 8.8 | 7.7 | 12.7 |
| 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 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.4 | 12.9 | 12.2 | 11.5 | 10.9 | 10.7 | 10.8 | 11.3 | 12.0 | 12.7 | 13.3 | 13.6 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 11.7 | 10.4 | 11.0 | 10.4 | 9.5 | 9.8 | 9.7 | 10.3 | 10.9 | 10.7 | 11.5 | 10.7 |
| Precipitation (mm) | 135 | 121 | 41 | 10 | 52 | 0 | 3 | 0 | 28 | 57 | 30 | 120 |
| Sunny days | 18 | 6 | 20 | 24 | 20 | 29 | 28 | 31 | 24 | 24 | 13 | 13 |
| Rainy days | 13 | 22 | 11 | 6 | 11 | 1 | 3 | 0 | 6 | 7 | 17 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Twinvallei is at