Average annual temperature is 24.6 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 16 days
Number of rainy days: 349 days
Look at detailed online map of Onia
* Weather data for Onia 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) | 33.2 | 34.0 | 33.4 | 33.2 | 32.7 | 31.4 | 31.9 | 32.0 | 32.6 | 31.8 | 31.5 | 33.0 |
| Average daytime temperature (°C) | 30.0 | 31.2 | 29.9 | 29.6 | 30.2 | 29.7 | 29.5 | 30.3 | 30.3 | 29.7 | 29.6 | 30.5 |
| Average temperature (°C) | 24.2 | 25.1 | 24.5 | 24.4 | 25.0 | 24.6 | 24.5 | 24.9 | 24.8 | 24.5 | 24.3 | 24.9 |
| Average night temperature (°C) | 20.8 | 21.3 | 21.2 | 21.4 | 21.9 | 21.4 | 20.9 | 21.4 | 21.4 | 21.7 | 21.5 | 21.7 |
| Absolute minimum temperature (°C) | 18.9 | 19.2 | 19.6 | 20.6 | 20.7 | 19.2 | 19.6 | 20.3 | 20.4 | 20.9 | 20.4 | 20.7 |
| 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 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 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) | 7.9 | 9.2 | 8.0 | 7.7 | 8.7 | 8.9 | 8.9 | 8.5 | 8.3 | 7.2 | 7.4 | 7.6 |
| Precipitation (mm) | 174 | 100 | 309 | 279 | 224 | 106 | 69 | 101 | 205 | 299 | 307 | 221 |
| Sunny days | 3 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 0 | 1 | 0 | 1 |
| Rainy days | 28 | 26 | 30 | 29 | 30 | 28 | 28 | 30 | 30 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Onia is at