Average annual temperature is 15.9 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: -1.6 °C
Number of sunny days: 171 days
Number of rainy days: 194 days
Look at detailed online map of Glenthorn
* Weather data for Glenthorn 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) | 34.9 | 33.0 | 31.7 | 30.6 | 25.6 | 21.5 | 23.0 | 26.7 | 32.3 | 31.9 | 34.1 | 37.1 |
| Average daytime temperature (°C) | 27.7 | 25.3 | 25.9 | 23.1 | 18.1 | 15.5 | 15.8 | 20.0 | 20.4 | 20.5 | 27.0 | 24.7 |
| Average temperature (°C) | 21.5 | 19.5 | 19.4 | 16.6 | 12.8 | 10.9 | 10.7 | 13.6 | 13.7 | 14.5 | 19.5 | 18.3 |
| Average night temperature (°C) | 15.5 | 14.4 | 13.6 | 10.2 | 8.2 | 7.0 | 6.0 | 7.6 | 7.3 | 8.9 | 12.2 | 13.0 |
| Absolute minimum temperature (°C) | 6.6 | 9.4 | 6.3 | 4.5 | 3.6 | 3.7 | 0.3 | 0.5 | -1.6 | 2.3 | 5.7 | 9.2 |
| 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 | 10.2 | 11.0 | 11.9 | 12.9 | 13.8 | 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) | 10.9 | 9.9 | 10.4 | 9.1 | 7.3 | 8.0 | 8.5 | 9.8 | 8.9 | 9.4 | 11.7 | 10.3 |
| Precipitation (mm) | 131 | 116 | 66 | 28 | 127 | 44 | 28 | 10 | 77 | 134 | 34 | 121 |
| Sunny days | 7 | 6 | 10 | 19 | 16 | 20 | 21 | 21 | 18 | 12 | 13 | 8 |
| Rainy days | 24 | 22 | 21 | 11 | 15 | 10 | 10 | 10 | 12 | 19 | 17 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Glenthorn is at