Average annual temperature is 25.4 °C
Absolute maximum temperature: 33.1 °C
Absolute minimum temperature: 20.5 °C
Number of sunny days: 9 days
Number of rainy days: 356 days
Look at detailed online map of Nianam
* Weather data for Nianam 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) | 33.1 | 33.1 | 32.9 | 32.7 | 32.6 | 31.7 | 30.3 | 31.8 | 32.7 | 32.5 | 32.8 | 32.6 |
| Average daytime temperature (°C) | 30.0 | 30.9 | 30.7 | 30.6 | 30.9 | 29.5 | 28.9 | 29.2 | 29.9 | 30.0 | 29.7 | 30.3 |
| Average temperature (°C) | 24.7 | 25.5 | 25.7 | 25.6 | 26.0 | 25.4 | 25.2 | 25.2 | 25.4 | 25.1 | 25.0 | 25.5 |
| Average night temperature (°C) | 22.1 | 22.8 | 23.0 | 22.9 | 23.5 | 22.8 | 22.5 | 22.5 | 23.1 | 23.1 | 22.9 | 23.2 |
| Absolute minimum temperature (°C) | 21.4 | 21.8 | 22.0 | 22.0 | 22.5 | 20.6 | 21.7 | 20.5 | 21.9 | 22.1 | 22.1 | 22.3 |
| 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) | 7.1 | 7.2 | 7.0 | 7.1 | 7.7 | 6.9 | 4.4 | 4.8 | 5.2 | 4.9 | 5.5 | 6.6 |
| Precipitation (mm) | 307 | 262 | 333 | 404 | 248 | 67 | 19 | 46 | 230 | 598 | 760 | 375 |
| Sunny days | 1 | 0 | 0 | 2 | 0 | 0 | 3 | 3 | 0 | 0 | 0 | 0 |
| Rainy days | 30 | 28 | 31 | 28 | 31 | 30 | 28 | 28 | 30 | 31 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Nianam is at