Average annual temperature is 27.9 °C
Absolute maximum temperature: 40.8 °C
Absolute minimum temperature: 14.9 °C
Number of sunny days: 220 days
Number of rainy days: 145 days
Look at detailed online map of Boual Caium
* Weather data for Boual Caium 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) | 37.6 | 38.9 | 40.3 | 40.8 | 40.3 | 38.5 | 33.5 | 32.8 | 32.8 | 33.9 | 36.1 | 35.2 |
| Average daytime temperature (°C) | 33.7 | 36.8 | 37.9 | 38.7 | 37.6 | 33.8 | 30.9 | 30.4 | 30.9 | 32.1 | 34.3 | 33.2 |
| Average temperature (°C) | 25.7 | 28.5 | 29.9 | 31.5 | 31.5 | 28.8 | 26.7 | 26.1 | 26.3 | 27.3 | 27.1 | 25.1 |
| Average night temperature (°C) | 19.1 | 20.9 | 22.1 | 24.8 | 26.4 | 25.1 | 23.8 | 23.4 | 23.4 | 23.7 | 20.7 | 18.6 |
| Absolute minimum temperature (°C) | 16.3 | 18.4 | 19.6 | 22.9 | 23.5 | 23.8 | 22.8 | 22.2 | 22.4 | 22.6 | 16.7 | 14.9 |
| 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 | 10.3 | 10.5 | 10.7 | 9.6 | 8.9 | 8.0 | 7.5 | 8.1 | 9.3 | 10.4 | 9.9 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 19 | 125 | 217 | 353 | 354 | 118 | 0 | 6 |
| Sunny days | 31 | 28 | 31 | 30 | 20 | 9 | 2 | 1 | 1 | 9 | 28 | 30 |
| Rainy days | 0 | 0 | 0 | 0 | 11 | 21 | 29 | 30 | 29 | 22 | 2 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Boual Caium is at