Average annual temperature is 19.6 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: 7.9 °C
Number of sunny days: 182 days
Number of rainy days: 183 days
Look at detailed online map of Mariannhill
* Weather data for Mariannhill 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) | 34.8 | 38.0 | 35.3 | 34.7 | 34.4 | 30.0 | 32.3 | 28.4 | 37.2 | 30.2 | 35.4 | 34.3 |
| Average daytime temperature (°C) | 27.6 | 26.7 | 26.7 | 26.3 | 22.9 | 22.3 | 22.1 | 22.4 | 24.5 | 22.5 | 26.0 | 25.2 |
| Average temperature (°C) | 23.2 | 22.9 | 22.5 | 21.0 | 18.1 | 16.5 | 15.7 | 16.5 | 18.6 | 18.3 | 21.3 | 21.3 |
| Average night temperature (°C) | 19.2 | 19.9 | 19.0 | 16.5 | 14.0 | 11.9 | 10.7 | 11.5 | 13.7 | 14.6 | 17.1 | 17.7 |
| Absolute minimum temperature (°C) | 14.2 | 17.5 | 14.1 | 12.8 | 10.0 | 8.5 | 8.1 | 7.9 | 9.2 | 10.0 | 9.3 | 15.0 |
| 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 | 13.0 | 14.0 |
| Daylight mean duration (h) | 13.8 | 13.1 | 12.3 | 11.4 | 10.6 | 10.3 | 10.4 | 11.1 | 11.9 | 12.8 | 13.6 | 14.0 |
| 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 | 13.0 |
| Sunshine mean duration (h) | 10.1 | 8.3 | 9.7 | 9.3 | 8.1 | 8.9 | 8.5 | 8.8 | 8.9 | 8.1 | 9.8 | 7.9 |
| Precipitation (mm) | 145 | 186 | 54 | 16 | 64 | 9 | 21 | 16 | 43 | 157 | 46 | 153 |
| Sunny days | 15 | 3 | 7 | 19 | 19 | 21 | 23 | 23 | 17 | 14 | 15 | 6 |
| Rainy days | 16 | 25 | 24 | 11 | 12 | 9 | 8 | 8 | 13 | 17 | 15 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mariannhill is at