Average annual temperature is 27.2 °C
Absolute maximum temperature: 40.6 °C
Absolute minimum temperature: 16.4 °C
Number of sunny days: 223 days
Number of rainy days: 142 days
Look at detailed online map of Cassama
* Weather data for Cassama 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) | 37.8 | 39.4 | 40.6 | 40.2 | 40.0 | 38.7 | 34.0 | 32.4 | 33.4 | 34.2 | 35.3 | 34.5 |
| Average daytime temperature (°C) | 33.1 | 36.5 | 37.0 | 37.6 | 36.9 | 34.1 | 30.7 | 30.0 | 31.3 | 32.1 | 33.4 | 32.7 |
| Average temperature (°C) | 25.1 | 27.7 | 27.5 | 29.2 | 29.5 | 28.6 | 26.7 | 26.1 | 26.7 | 27.4 | 26.8 | 25.1 |
| Average night temperature (°C) | 19.4 | 21.2 | 21.0 | 23.1 | 24.6 | 25.2 | 24.1 | 23.8 | 23.9 | 24.2 | 21.8 | 19.5 |
| Absolute minimum temperature (°C) | 16.4 | 19.8 | 18.8 | 20.6 | 21.7 | 23.5 | 22.7 | 22.6 | 22.2 | 23.1 | 18.1 | 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 | 12.8 | 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) | 9.9 | 10.7 | 10.8 | 11.1 | 9.9 | 9.3 | 8.0 | 6.9 | 8.0 | 9.0 | 10.2 | 9.8 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 1 | 91 | 345 | 490 | 264 | 137 | 10 | 0 |
| Sunny days | 31 | 28 | 31 | 29 | 26 | 11 | 0 | 1 | 1 | 8 | 26 | 31 |
| Rainy days | 0 | 0 | 0 | 1 | 5 | 19 | 31 | 30 | 29 | 23 | 4 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Cassama is at