Average annual temperature is 24.3 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: 17.2 °C
Number of sunny days: 21 days
Number of rainy days: 344 days
Look at detailed online map of Posso
* Weather data for Posso Gabon is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.7 | 33.9 | 33.6 | 32.8 | 32.6 | 31.5 | 31.8 | 31.8 | 32.3 | 31.8 | 31.5 | 32.8 |
| Average daytime temperature (°C) | 29.7 | 31.1 | 30.3 | 29.9 | 30.3 | 29.4 | 29.4 | 29.7 | 30.4 | 29.9 | 29.3 | 30.3 |
| Average temperature (°C) | 23.9 | 24.6 | 24.4 | 24.3 | 24.6 | 24.1 | 24.2 | 24.3 | 24.5 | 24.4 | 24.1 | 24.5 |
| Average night temperature (°C) | 20.2 | 20.8 | 20.8 | 20.8 | 21.3 | 20.4 | 19.9 | 20.4 | 20.8 | 21.4 | 21.2 | 21.3 |
| Absolute minimum temperature (°C) | 18.5 | 18.0 | 19.3 | 20.1 | 19.4 | 17.2 | 18.0 | 18.7 | 19.7 | 20.6 | 20.4 | 20.2 |
| 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) | 8.0 | 8.6 | 8.2 | 8.1 | 7.8 | 8.9 | 9.3 | 9.1 | 8.3 | 7.6 | 7.1 | 7.6 |
| Precipitation (mm) | 258 | 168 | 258 | 283 | 223 | 65 | 37 | 105 | 163 | 348 | 344 | 358 |
| Sunny days | 1 | 3 | 3 | 0 | 1 | 4 | 2 | 3 | 1 | 0 | 1 | 2 |
| Rainy days | 30 | 25 | 28 | 30 | 30 | 26 | 29 | 28 | 29 | 31 | 29 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Posso is at