Average annual temperature is 24.2 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: 15.1 °C
Number of sunny days: 136 days
Number of rainy days: 229 days
Look at detailed online map of Niamana
* Weather data for Niamana Guinea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 33.5 | 35.5 | 35.1 | 35.1 | 34.2 | 31.3 | 31.3 | 32.6 | 32.2 | 32.3 | 33.5 | 34.0 |
| Average daytime temperature (°C) | 32.1 | 33.6 | 33.3 | 32.6 | 31.0 | 28.9 | 28.4 | 28.1 | 29.0 | 29.8 | 31.0 | 31.9 |
| Average temperature (°C) | 23.9 | 25.8 | 25.9 | 25.6 | 24.6 | 23.6 | 23.2 | 23.1 | 23.4 | 23.6 | 24.2 | 23.9 |
| Average night temperature (°C) | 17.5 | 19.3 | 20.7 | 21.4 | 21.2 | 20.7 | 20.2 | 20.3 | 20.4 | 20.3 | 19.6 | 17.4 |
| Absolute minimum temperature (°C) | 15.8 | 15.8 | 17.0 | 20.1 | 20.2 | 19.9 | 18.8 | 19.7 | 19.8 | 19.2 | 16.3 | 15.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.6 | 11.8 | 12.1 | 12.3 | 12.5 | 12.7 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.3 | 10.1 | 9.4 | 8.6 | 7.9 | 7.2 | 7.2 | 6.8 | 7.9 | 8.7 | 9.4 | 10.6 |
| Precipitation (mm) | 18 | 2 | 26 | 103 | 270 | 195 | 325 | 329 | 372 | 179 | 71 | 0 |
| Sunny days | 29 | 27 | 22 | 12 | 2 | 0 | 0 | 1 | 0 | 2 | 10 | 31 |
| Rainy days | 2 | 1 | 9 | 18 | 29 | 30 | 31 | 30 | 30 | 29 | 20 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Niamana is at