Average annual temperature is 17.0 °C
Absolute maximum temperature: 40.9 °C
Absolute minimum temperature: 1.5 °C
Number of sunny days: 203 days
Number of rainy days: 162 days
Look at detailed online map of Riviersonderend
* Weather data for Riviersonderend 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) | 38.6 | 39.3 | 35.0 | 36.1 | 32.4 | 20.9 | 21.5 | 33.3 | 26.8 | 31.5 | 40.9 | 36.8 |
| Average daytime temperature (°C) | 30.7 | 29.1 | 26.2 | 24.0 | 20.1 | 16.6 | 16.5 | 20.8 | 19.7 | 23.5 | 29.9 | 28.1 |
| Average temperature (°C) | 22.3 | 21.7 | 19.8 | 16.9 | 14.1 | 12.4 | 11.2 | 13.7 | 13.5 | 16.8 | 21.0 | 20.5 |
| Average night temperature (°C) | 16.5 | 16.5 | 15.1 | 11.4 | 9.3 | 8.4 | 6.5 | 7.5 | 8.0 | 11.7 | 14.4 | 15.1 |
| Absolute minimum temperature (°C) | 12.5 | 11.5 | 10.1 | 7.5 | 4.1 | 4.1 | 1.5 | 3.4 | 2.7 | 7.3 | 10.9 | 10.8 |
| 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) | 11.6 | 10.0 | 9.2 | 8.7 | 7.3 | 6.2 | 8.2 | 8.9 | 9.3 | 9.8 | 11.7 | 11.2 |
| Precipitation (mm) | 21 | 45 | 72 | 20 | 68 | 101 | 29 | 14 | 72 | 57 | 0 | 49 |
| Sunny days | 18 | 11 | 13 | 19 | 18 | 8 | 20 | 21 | 17 | 15 | 27 | 16 |
| Rainy days | 13 | 17 | 18 | 11 | 13 | 22 | 11 | 10 | 13 | 16 | 3 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Riviersonderend is at