Average annual temperature is 18.6 °C
Absolute maximum temperature: 44.0 °C
Absolute minimum temperature: 3.1 °C
Number of sunny days: 226 days
Number of rainy days: 139 days
Look at detailed online map of Hermiston
* Weather data for Hermiston 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) | 41.2 | 38.5 | 37.8 | 39.9 | 33.3 | 24.5 | 28.1 | 34.6 | 33.1 | 32.3 | 41.1 | 44.0 |
| Average daytime temperature (°C) | 31.2 | 29.4 | 29.2 | 27.4 | 22.2 | 19.9 | 20.2 | 23.8 | 22.8 | 22.6 | 28.5 | 28.4 |
| Average temperature (°C) | 24.7 | 23.5 | 22.2 | 19.6 | 15.5 | 13.8 | 12.6 | 15.2 | 15.7 | 17.2 | 21.1 | 22.0 |
| Average night temperature (°C) | 19.0 | 18.7 | 16.6 | 13.6 | 10.3 | 8.8 | 6.6 | 8.5 | 10.0 | 11.9 | 14.5 | 16.1 |
| Absolute minimum temperature (°C) | 11.4 | 13.6 | 10.5 | 9.0 | 4.7 | 5.5 | 3.1 | 4.5 | 5.1 | 7.3 | 10.0 | 11.9 |
| 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) | 14.1 | 13.3 | 12.3 | 11.3 | 10.4 | 10.0 | 10.2 | 10.9 | 11.9 | 12.9 | 13.8 | 14.3 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 10.7 | 9.5 | 9.3 | 8.8 | 7.5 | 7.3 | 8.5 | 9.3 | 8.6 | 9.2 | 11.6 | 11.0 |
| Precipitation (mm) | 18 | 61 | 33 | 14 | 90 | 22 | 28 | 9 | 77 | 62 | 10 | 31 |
| Sunny days | 26 | 13 | 16 | 20 | 19 | 19 | 22 | 23 | 20 | 13 | 17 | 18 |
| Rainy days | 5 | 15 | 15 | 10 | 12 | 11 | 9 | 8 | 10 | 18 | 13 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hermiston is at