Average annual temperature is 27.3 °C
Absolute maximum temperature: 40.2 °C
Absolute minimum temperature: 15.9 °C
Number of sunny days: 226 days
Number of rainy days: 139 days
Look at detailed online map of Mandem
* Weather data for Mandem 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) | 36.9 | 38.0 | 39.3 | 40.2 | 40.0 | 38.9 | 34.1 | 33.8 | 33.6 | 34.4 | 35.7 | 34.8 |
| Average daytime temperature (°C) | 33.1 | 36.4 | 37.3 | 38.1 | 37.0 | 34.1 | 31.2 | 30.9 | 31.7 | 32.7 | 33.7 | 32.3 |
| Average temperature (°C) | 25.2 | 27.7 | 28.4 | 30.1 | 30.2 | 28.6 | 26.6 | 26.1 | 26.5 | 27.2 | 26.6 | 24.8 |
| Average night temperature (°C) | 19.2 | 20.6 | 21.3 | 23.5 | 25.3 | 24.8 | 23.8 | 23.5 | 23.5 | 23.7 | 20.6 | 18.8 |
| Absolute minimum temperature (°C) | 16.7 | 18.0 | 18.9 | 21.5 | 22.4 | 23.8 | 22.7 | 22.4 | 22.4 | 22.1 | 15.9 | 16.0 |
| 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 | 9.6 | 9.2 | 7.9 | 6.9 | 8.3 | 9.2 | 10.0 | 9.8 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 2 | 86 | 259 | 329 | 380 | 172 | 0 | 0 |
| Sunny days | 31 | 28 | 31 | 29 | 26 | 12 | 1 | 1 | 1 | 7 | 29 | 30 |
| Rainy days | 0 | 0 | 0 | 1 | 5 | 18 | 30 | 30 | 29 | 24 | 1 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mandem is at