Average annual temperature is 25.0 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 35 days
Number of rainy days: 330 days
Look at detailed online map of Sia
* Weather data for Sia Republic of the Congo is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 33.8 | 34.6 | 36.0 | 33.4 | 33.5 | 32.6 | 32.6 | 32.8 | 33.1 | 33.7 | 31.5 | 33.6 |
| Average daytime temperature (°C) | 30.9 | 32.5 | 31.2 | 30.6 | 30.9 | 29.4 | 30.5 | 30.2 | 30.1 | 30.5 | 29.5 | 31.0 |
| Average temperature (°C) | 24.9 | 25.9 | 25.1 | 25.0 | 25.5 | 24.5 | 25.2 | 24.9 | 24.8 | 24.9 | 24.4 | 25.3 |
| Average night temperature (°C) | 21.0 | 21.5 | 21.5 | 21.7 | 22.1 | 21.6 | 21.5 | 21.4 | 21.7 | 22.0 | 21.8 | 22.0 |
| Absolute minimum temperature (°C) | 19.3 | 18.9 | 20.5 | 20.0 | 20.9 | 20.4 | 20.5 | 19.1 | 20.6 | 20.9 | 20.7 | 19.6 |
| 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 | 12.1 | 12.1 | 12.1 | 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) | 8.8 | 9.7 | 7.8 | 8.5 | 9.0 | 8.0 | 9.7 | 8.6 | 8.2 | 8.0 | 7.9 | 8.4 |
| Precipitation (mm) | 66 | 41 | 179 | 140 | 87 | 117 | 52 | 121 | 166 | 191 | 241 | 148 |
| Sunny days | 9 | 8 | 4 | 1 | 1 | 0 | 1 | 3 | 0 | 0 | 0 | 8 |
| Rainy days | 22 | 20 | 27 | 29 | 30 | 30 | 30 | 28 | 30 | 31 | 30 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sia is at