Average annual temperature is 16.6 °C
Absolute maximum temperature: 30.6 °C
Absolute minimum temperature: 7.2 °C
Number of sunny days: 208 days
Number of rainy days: 157 days
Look at detailed online map of Heroldsbaai
* Weather data for Heroldsbaai 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) | 25.0 | 23.3 | 23.8 | 22.0 | 21.1 | 21.6 | 24.7 | 30.6 | 19.3 | 20.6 | 23.2 | 23.5 |
| Average daytime temperature (°C) | 21.5 | 20.9 | 20.8 | 18.2 | 17.4 | 17.0 | 15.2 | 17.4 | 15.8 | 17.3 | 19.3 | 20.0 |
| Average temperature (°C) | 20.1 | 19.7 | 19.1 | 16.5 | 15.3 | 14.7 | 12.9 | 14.6 | 13.9 | 15.9 | 17.5 | 18.7 |
| Average night temperature (°C) | 18.4 | 18.2 | 17.6 | 14.7 | 13.0 | 12.5 | 10.5 | 11.8 | 11.7 | 14.2 | 15.4 | 16.9 |
| Absolute minimum temperature (°C) | 15.7 | 14.8 | 14.7 | 12.3 | 10.7 | 9.3 | 7.2 | 8.9 | 8.7 | 11.5 | 13.1 | 14.8 |
| 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 | 11.2 | 10.4 | 9.9 | 10.1 | 10.9 | 11.9 | 12.9 | 13.9 | 14.4 |
| 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) | 11.0 | 10.3 | 9.0 | 8.7 | 7.3 | 6.3 | 8.0 | 9.2 | 9.0 | 9.8 | 11.4 | 11.0 |
| Precipitation (mm) | 46 | 32 | 93 | 30 | 101 | 82 | 50 | 7 | 66 | 74 | 3 | 89 |
| Sunny days | 17 | 14 | 15 | 19 | 19 | 13 | 19 | 23 | 16 | 16 | 22 | 15 |
| Rainy days | 14 | 14 | 16 | 11 | 12 | 17 | 12 | 8 | 14 | 15 | 8 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Heroldsbaai is at