Average annual temperature is 27.4 °C
Absolute maximum temperature: 40.7 °C
Absolute minimum temperature: 17.7 °C
Number of sunny days: 211 days
Number of rainy days: 154 days
Look at detailed online map of Umbassá
* Weather data for Umbassá 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) | 38.6 | 40.1 | 40.5 | 40.7 | 38.9 | 36.8 | 32.9 | 32.4 | 32.7 | 33.6 | 35.5 | 37.1 |
| Average daytime temperature (°C) | 33.6 | 37.1 | 36.6 | 37.2 | 35.0 | 32.4 | 30.1 | 29.8 | 31.0 | 31.8 | 33.5 | 34.3 |
| Average temperature (°C) | 25.8 | 28.4 | 28.2 | 29.5 | 29.4 | 28.3 | 26.4 | 26.1 | 26.6 | 27.1 | 27.2 | 26.4 |
| Average night temperature (°C) | 20.4 | 22.2 | 22.7 | 24.5 | 25.7 | 25.7 | 24.0 | 23.8 | 23.8 | 24.1 | 22.1 | 20.0 |
| Absolute minimum temperature (°C) | 18.4 | 20.2 | 21.3 | 22.6 | 23.4 | 24.2 | 22.5 | 22.3 | 22.6 | 22.7 | 18.7 | 17.7 |
| 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 | 11.8 | 12.1 | 12.4 | 12.7 | 12.8 | 12.7 | 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) | 10.1 | 10.6 | 10.7 | 10.9 | 9.1 | 9.1 | 7.7 | 7.1 | 8.5 | 8.5 | 10.1 | 9.7 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 8 | 105 | 393 | 409 | 337 | 197 | 12 | 0 |
| Sunny days | 31 | 28 | 31 | 30 | 22 | 10 | 1 | 1 | 1 | 2 | 24 | 30 |
| Rainy days | 0 | 0 | 0 | 0 | 9 | 20 | 30 | 30 | 29 | 29 | 6 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Umbassá is at