Average annual temperature is 28.0 °C
Absolute maximum temperature: 41.1 °C
Absolute minimum temperature: 15.2 °C
Number of sunny days: 220 days
Number of rainy days: 145 days
Look at detailed online map of Sinjã
* Weather data for Sinjã 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) | 38.1 | 39.4 | 40.5 | 41.1 | 40.2 | 38.4 | 33.6 | 32.8 | 33.1 | 33.7 | 36.3 | 35.6 |
| Average daytime temperature (°C) | 34.3 | 37.2 | 38.1 | 38.8 | 37.7 | 34.0 | 31.1 | 30.5 | 30.9 | 32.1 | 34.4 | 33.7 |
| Average temperature (°C) | 26.1 | 28.9 | 30.1 | 31.7 | 31.6 | 29.0 | 26.7 | 26.2 | 26.4 | 27.2 | 27.2 | 25.4 |
| Average night temperature (°C) | 19.1 | 21.0 | 22.4 | 25.0 | 26.5 | 25.3 | 23.9 | 23.5 | 23.4 | 23.8 | 20.8 | 18.5 |
| Absolute minimum temperature (°C) | 16.1 | 18.6 | 19.9 | 22.8 | 23.7 | 23.9 | 23.2 | 22.1 | 22.5 | 22.9 | 17.2 | 15.2 |
| 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 | 10.8 | 9.6 | 9.1 | 8.1 | 7.8 | 8.1 | 9.4 | 10.4 | 10.0 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 21 | 121 | 231 | 357 | 346 | 102 | 0 | 4 |
| Sunny days | 31 | 28 | 31 | 30 | 17 | 9 | 2 | 2 | 1 | 11 | 28 | 30 |
| Rainy days | 0 | 0 | 0 | 0 | 14 | 21 | 29 | 29 | 29 | 20 | 2 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sinjã is at