Average annual temperature is 27.6 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: 23.5 °C
Number of sunny days: 29 days
Number of rainy days: 336 days
Look at detailed online map of Riau
* Weather data for Riau Indonesia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 28.8 | 29.1 | 29.1 | 30.2 | 30.9 | 30.5 | 31.1 | 30.9 | 31.8 | 33.8 | 32.9 | 30.2 |
| Average daytime temperature (°C) | 27.5 | 28.0 | 27.6 | 29.2 | 29.8 | 29.4 | 29.5 | 29.8 | 30.7 | 31.6 | 30.4 | 28.9 |
| Average temperature (°C) | 26.2 | 26.5 | 26.4 | 28.0 | 28.7 | 28.4 | 27.8 | 28.0 | 28.3 | 28.5 | 27.6 | 26.7 |
| Average night temperature (°C) | 24.8 | 25.2 | 25.1 | 26.3 | 27.3 | 26.7 | 26.0 | 25.8 | 26.3 | 25.8 | 25.5 | 24.9 |
| Absolute minimum temperature (°C) | 23.9 | 23.7 | 23.5 | 24.7 | 25.6 | 25.1 | 23.8 | 23.9 | 23.5 | 23.7 | 24.3 | 23.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 7.9 | 9.9 | 9.4 | 10.3 | 10.0 | 10.2 | 9.4 | 10.6 | 10.3 | 10.4 | 8.6 | 8.1 |
| Precipitation (mm) | 317 | 159 | 327 | 159 | 152 | 204 | 357 | 145 | 74 | 77 | 283 | 276 |
| Sunny days | 0 | 5 | 6 | 1 | 5 | 2 | 2 | 1 | 4 | 3 | 0 | 0 |
| Rainy days | 31 | 23 | 25 | 29 | 26 | 28 | 29 | 30 | 26 | 28 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Riau is at