Average annual temperature is 27.1 °C
Absolute maximum temperature: 40.5 °C
Absolute minimum temperature: 16.5 °C
Number of sunny days: 220 days
Number of rainy days: 145 days
Look at detailed online map of Sumo
* Weather data for Sumo 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) | 37.2 | 39.5 | 40.5 | 40.2 | 39.0 | 37.5 | 32.6 | 31.7 | 32.6 | 33.3 | 34.9 | 35.3 |
| Average daytime temperature (°C) | 33.3 | 36.1 | 35.1 | 36.3 | 35.0 | 32.7 | 29.8 | 29.4 | 30.4 | 31.3 | 32.7 | 33.1 |
| Average temperature (°C) | 25.4 | 27.7 | 27.3 | 29.0 | 29.2 | 28.3 | 26.5 | 26.1 | 26.6 | 27.2 | 26.5 | 25.2 |
| Average night temperature (°C) | 19.3 | 21.2 | 21.3 | 23.4 | 25.1 | 25.3 | 24.1 | 23.9 | 24.1 | 24.4 | 21.4 | 19.2 |
| Absolute minimum temperature (°C) | 17.1 | 19.8 | 19.7 | 20.8 | 22.0 | 23.9 | 22.7 | 22.9 | 22.4 | 23.3 | 16.8 | 16.5 |
| 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 | 12.7 | 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) | 10.0 | 10.7 | 10.8 | 11.0 | 9.6 | 9.4 | 8.1 | 7.2 | 8.3 | 8.7 | 10.2 | 9.8 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 3 | 84 | 321 | 456 | 264 | 150 | 7 | 0 |
| Sunny days | 31 | 28 | 31 | 30 | 27 | 11 | 0 | 1 | 0 | 6 | 25 | 30 |
| Rainy days | 0 | 0 | 0 | 0 | 4 | 19 | 31 | 30 | 30 | 25 | 5 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sumo is at