Average annual temperature is 25.9 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: 20.3 °C
Number of sunny days: 80 days
Number of rainy days: 285 days
Look at detailed online map of Gantchou Sainte-Marie
* Weather data for Gantchou Sainte-Marie 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) | 32.1 | 34.5 | 35.5 | 34.0 | 33.7 | 33.1 | 33.3 | 33.5 | 33.7 | 33.8 | 32.8 | 33.4 |
| Average daytime temperature (°C) | 29.8 | 32.1 | 31.1 | 30.9 | 31.8 | 30.9 | 31.4 | 31.3 | 31.7 | 31.1 | 29.9 | 30.5 |
| Average temperature (°C) | 24.9 | 26.3 | 25.7 | 25.9 | 26.6 | 25.8 | 25.9 | 26.0 | 26.3 | 26.0 | 25.3 | 25.8 |
| Average night temperature (°C) | 22.0 | 22.6 | 22.6 | 22.8 | 23.3 | 22.5 | 21.8 | 22.3 | 22.9 | 23.1 | 22.6 | 23.0 |
| Absolute minimum temperature (°C) | 21.0 | 20.9 | 21.3 | 22.2 | 21.8 | 21.0 | 20.3 | 21.3 | 21.9 | 21.6 | 21.6 | 21.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.3 | 12.2 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 12.0 | 12.1 | 12.2 | 12.3 | 12.3 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 8.7 | 9.5 | 8.5 | 8.7 | 9.6 | 9.8 | 10.7 | 10.1 | 9.8 | 8.3 | 8.1 | 8.4 |
| Precipitation (mm) | 138 | 83 | 209 | 180 | 99 | 45 | 15 | 48 | 40 | 261 | 229 | 230 |
| Sunny days | 5 | 8 | 4 | 2 | 4 | 11 | 22 | 14 | 6 | 2 | 1 | 1 |
| Rainy days | 26 | 20 | 27 | 28 | 27 | 19 | 9 | 17 | 24 | 29 | 29 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Gantchou Sainte-Marie is at