Average annual temperature is 15.9 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -2.4 °C
Number of sunny days: 226 days
Number of rainy days: 139 days
Look at detailed online map of City of Johannesburg
* Weather data for City of Johannesburg 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) | 30.1 | 27.3 | 27.8 | 25.3 | 24.8 | 21.1 | 22.2 | 26.9 | 29.3 | 32.3 | 31.8 | 31.0 |
| Average daytime temperature (°C) | 26.2 | 23.3 | 24.2 | 22.7 | 18.8 | 17.7 | 16.1 | 20.3 | 25.0 | 25.5 | 26.0 | 25.8 |
| Average temperature (°C) | 20.1 | 18.1 | 18.3 | 15.9 | 12.4 | 10.2 | 9.0 | 12.4 | 16.9 | 18.0 | 19.5 | 19.8 |
| Average night temperature (°C) | 13.9 | 13.9 | 12.7 | 9.8 | 7.3 | 4.1 | 2.8 | 5.0 | 8.9 | 10.9 | 13.0 | 14.1 |
| Absolute minimum temperature (°C) | 10.3 | 11.4 | 9.5 | 5.0 | 1.7 | 0.7 | -2.4 | -1.2 | 1.5 | 4.5 | 3.6 | 10.0 |
| 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 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.6 | 13.0 | 12.2 | 11.5 | 10.8 | 10.5 | 10.7 | 11.2 | 11.9 | 12.7 | 13.4 | 13.7 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 11.7 | 9.3 | 10.4 | 10.4 | 9.1 | 9.6 | 9.5 | 10.3 | 11.0 | 10.0 | 10.7 | 10.9 |
| Precipitation (mm) | 49 | 154 | 24 | 12 | 46 | 7 | 1 | 1 | 6 | 57 | 47 | 110 |
| Sunny days | 13 | 5 | 13 | 22 | 18 | 27 | 28 | 30 | 27 | 20 | 14 | 9 |
| Rainy days | 18 | 23 | 18 | 8 | 13 | 3 | 3 | 1 | 3 | 11 | 16 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in City of Johannesburg is at