Average annual temperature is 27.5 °C
Absolute maximum temperature: 41.1 °C
Absolute minimum temperature: 15.8 °C
Number of sunny days: 227 days
Number of rainy days: 138 days
Look at detailed online map of Janha
* Weather data for Janha Guinea-Bissau is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 37.0 | 38.6 | 39.9 | 41.1 | 40.2 | 38.8 | 33.8 | 33.5 | 33.4 | 34.2 | 35.8 | 34.9 |
| Average daytime temperature (°C) | 33.1 | 36.7 | 37.6 | 38.7 | 37.1 | 34.0 | 31.1 | 30.6 | 31.4 | 32.5 | 33.7 | 32.5 |
| Average temperature (°C) | 25.3 | 27.9 | 28.8 | 30.7 | 30.5 | 28.6 | 26.6 | 26.1 | 26.5 | 27.2 | 26.7 | 24.8 |
| Average night temperature (°C) | 19.1 | 20.8 | 21.8 | 24.2 | 25.6 | 25.0 | 23.9 | 23.6 | 23.6 | 23.8 | 20.9 | 18.6 |
| Absolute minimum temperature (°C) | 17.0 | 18.3 | 20.0 | 22.0 | 22.9 | 24.2 | 22.9 | 22.4 | 22.6 | 22.6 | 16.6 | 15.8 |
| 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) | 11.5 | 11.7 | 12.1 | 12.4 | 12.7 | 12.8 | 12.8 | 12.5 | 12.2 | 11.9 | 11.6 | 11.4 |
| 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) | 10.0 | 10.6 | 10.6 | 10.9 | 9.4 | 9.2 | 7.7 | 6.9 | 8.2 | 9.1 | 10.1 | 9.8 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 1 | 92 | 236 | 313 | 340 | 153 | 1 | 0 |
| Sunny days | 31 | 28 | 31 | 30 | 28 | 10 | 1 | 2 | 1 | 7 | 28 | 30 |
| Rainy days | 0 | 0 | 0 | 0 | 3 | 20 | 30 | 29 | 29 | 24 | 2 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Janha is at