Average annual temperature is 23.5 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: 18.0 °C
Number of sunny days: 15 days
Number of rainy days: 350 days
Look at detailed online map of Messon Effak
* Weather data for Messon Effak 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) | 31.3 | 32.8 | 32.1 | 31.5 | 31.6 | 31.4 | 30.1 | 31.7 | 31.0 | 31.2 | 31.3 | 32.2 |
| Average daytime temperature (°C) | 29.7 | 31.0 | 29.2 | 29.5 | 29.3 | 28.6 | 28.9 | 29.3 | 29.0 | 28.9 | 28.4 | 30.1 |
| Average temperature (°C) | 23.6 | 24.5 | 23.4 | 23.4 | 23.8 | 23.2 | 23.3 | 23.4 | 23.1 | 23.1 | 22.9 | 24.2 |
| Average night temperature (°C) | 20.0 | 20.4 | 20.3 | 20.1 | 20.8 | 20.5 | 20.3 | 20.3 | 20.4 | 20.4 | 20.1 | 20.9 |
| Absolute minimum temperature (°C) | 18.2 | 18.0 | 18.6 | 18.5 | 19.8 | 19.7 | 19.5 | 19.3 | 19.6 | 19.2 | 19.1 | 19.8 |
| 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) | 12.0 | 12.0 | 12.1 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 |
| Daylight minimum duration (h) | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 |
| Sunshine mean duration (h) | 8.5 | 9.0 | 7.2 | 7.9 | 7.8 | 7.8 | 8.0 | 7.7 | 7.5 | 7.6 | 6.5 | 8.1 |
| Precipitation (mm) | 61 | 45 | 287 | 273 | 160 | 181 | 167 | 135 | 250 | 335 | 392 | 106 |
| Sunny days | 1 | 3 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 8 |
| Rainy days | 30 | 25 | 30 | 30 | 31 | 29 | 31 | 31 | 29 | 31 | 30 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Messon Effak is at