Average annual temperature is 30.4 °C
Absolute maximum temperature: 42.5 °C
Absolute minimum temperature: 18.8 °C
Number of sunny days: 246 days
Number of rainy days: 119 days
Look at detailed online map of Riau
* Weather data for Riau South Sudan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 40.1 | 41.8 | 42.4 | 41.7 | 42.5 | 38.5 | 38.6 | 37.7 | 38.3 | 40.9 | 39.2 | 40.0 |
| Average daytime temperature (°C) | 36.5 | 37.8 | 39.4 | 39.5 | 39.6 | 34.7 | 34.3 | 33.5 | 35.4 | 38.0 | 37.2 | 37.4 |
| Average temperature (°C) | 29.3 | 30.4 | 32.7 | 33.2 | 33.5 | 28.9 | 28.6 | 27.9 | 29.0 | 30.9 | 30.5 | 29.9 |
| Average night temperature (°C) | 22.5 | 23.2 | 26.1 | 26.9 | 27.6 | 24.4 | 24.1 | 23.4 | 24.0 | 25.1 | 24.7 | 23.1 |
| Absolute minimum temperature (°C) | 19.7 | 20.3 | 23.2 | 23.8 | 24.2 | 22.1 | 22.4 | 21.7 | 22.1 | 22.8 | 22.8 | 18.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.7 | 11.8 | 12.1 | 12.3 | 12.5 | 12.6 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.7 | 10.9 | 10.6 | 9.9 | 10.4 | 9.1 | 9.1 | 9.9 | 9.6 | 9.9 | 10.0 | 10.5 |
| Precipitation (mm) | 0 | 0 | 0 | 4 | 6 | 91 | 79 | 112 | 39 | 16 | 10 | 0 |
| Sunny days | 31 | 28 | 30 | 26 | 25 | 8 | 13 | 9 | 9 | 19 | 18 | 30 |
| Rainy days | 0 | 0 | 1 | 4 | 6 | 22 | 18 | 22 | 21 | 12 | 12 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Riau is at