Average annual temperature is 13.8 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: -3.6 °C
Number of sunny days: 161 days
Number of rainy days: 204 days
Look at detailed online map of Glen Alphen
* Weather data for Glen Alphen 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) | 31.6 | 29.8 | 27.9 | 25.3 | 23.6 | 20.6 | 22.7 | 25.5 | 31.0 | 32.6 | 35.1 | 32.0 |
| Average daytime temperature (°C) | 24.6 | 22.7 | 22.7 | 20.8 | 16.2 | 15.2 | 15.8 | 19.5 | 21.1 | 19.8 | 25.8 | 22.6 |
| Average temperature (°C) | 18.6 | 17.4 | 16.9 | 14.1 | 10.2 | 8.7 | 8.1 | 10.9 | 13.0 | 13.2 | 17.9 | 16.3 |
| Average night temperature (°C) | 13.4 | 13.2 | 12.2 | 8.5 | 5.4 | 3.4 | 1.8 | 3.4 | 5.9 | 7.4 | 11.3 | 11.2 |
| Absolute minimum temperature (°C) | 7.6 | 9.8 | 4.7 | 3.0 | -1.2 | -0.9 | -3.6 | -1.8 | -2.0 | 1.2 | 5.7 | 8.4 |
| 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) | 13.9 | 13.2 | 12.3 | 11.3 | 10.5 | 10.1 | 10.3 | 11.0 | 11.9 | 12.9 | 13.7 | 14.1 |
| 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) | 10.4 | 8.5 | 10.0 | 9.4 | 7.1 | 8.5 | 8.7 | 9.8 | 9.3 | 8.7 | 10.8 | 8.3 |
| Precipitation (mm) | 157 | 221 | 80 | 33 | 102 | 10 | 13 | 0 | 37 | 100 | 56 | 166 |
| Sunny days | 6 | 3 | 2 | 16 | 15 | 24 | 23 | 29 | 21 | 11 | 10 | 1 |
| Rainy days | 25 | 25 | 29 | 14 | 16 | 6 | 8 | 2 | 9 | 20 | 20 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Glen Alphen is at