Average annual temperature is 25.5 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: 19.1 °C
Number of sunny days: 45 days
Number of rainy days: 320 days
Look at detailed online map of Osa
* Weather data for Osa 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) | 33.2 | 35.9 | 35.2 | 33.9 | 33.7 | 33.1 | 33.0 | 33.6 | 33.4 | 33.7 | 32.7 | 34.2 |
| Average daytime temperature (°C) | 30.8 | 32.8 | 31.9 | 31.1 | 31.6 | 30.3 | 31.7 | 31.0 | 30.7 | 31.0 | 30.0 | 31.4 |
| Average temperature (°C) | 25.1 | 26.1 | 25.6 | 25.5 | 26.0 | 25.2 | 25.9 | 25.5 | 25.3 | 25.5 | 24.9 | 25.6 |
| Average night temperature (°C) | 21.5 | 21.9 | 22.0 | 22.2 | 22.4 | 21.9 | 21.6 | 21.8 | 22.1 | 22.4 | 22.0 | 22.5 |
| Absolute minimum temperature (°C) | 19.1 | 19.4 | 20.7 | 20.5 | 21.1 | 21.1 | 20.7 | 19.8 | 21.0 | 21.6 | 21.1 | 21.2 |
| 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) | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| 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) | 8.7 | 9.5 | 8.4 | 8.4 | 9.2 | 8.7 | 10.4 | 9.2 | 8.6 | 7.9 | 7.5 | 8.0 |
| Precipitation (mm) | 100 | 41 | 193 | 200 | 111 | 74 | 16 | 110 | 102 | 206 | 241 | 174 |
| Sunny days | 7 | 10 | 4 | 3 | 0 | 6 | 8 | 4 | 0 | 1 | 0 | 2 |
| Rainy days | 24 | 18 | 27 | 27 | 31 | 24 | 23 | 27 | 30 | 30 | 30 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Osa is at