Average annual temperature is 27.7 °C
Absolute maximum temperature: 41.0 °C
Absolute minimum temperature: 15.7 °C
Number of sunny days: 221 days
Number of rainy days: 144 days
Look at detailed online map of Sinchã Issa Seidi
* Weather data for Sinchã Issa Seidi 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 | 39.3 | 40.7 | 41.0 | 41.0 | 39.1 | 33.5 | 33.4 | 33.1 | 33.6 | 35.2 | 35.0 |
| Average daytime temperature (°C) | 33.7 | 37.3 | 38.0 | 38.9 | 37.7 | 34.4 | 31.1 | 30.5 | 31.1 | 32.1 | 33.2 | 32.6 |
| Average temperature (°C) | 25.4 | 28.5 | 29.6 | 31.2 | 31.2 | 29.0 | 26.7 | 26.2 | 26.5 | 27.2 | 26.4 | 24.6 |
| Average night temperature (°C) | 18.3 | 20.4 | 21.9 | 24.3 | 26.1 | 25.3 | 24.0 | 23.6 | 23.6 | 23.8 | 20.4 | 18.0 |
| Absolute minimum temperature (°C) | 15.7 | 17.1 | 20.3 | 21.9 | 23.0 | 23.9 | 22.7 | 22.5 | 22.7 | 22.7 | 16.5 | 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) | 10.1 | 10.5 | 10.5 | 10.8 | 9.2 | 9.0 | 7.5 | 7.0 | 8.0 | 9.1 | 10.1 | 9.8 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 4 | 98 | 238 | 346 | 354 | 191 | 2 | 1 |
| Sunny days | 31 | 28 | 31 | 29 | 24 | 9 | 1 | 1 | 3 | 7 | 27 | 30 |
| Rainy days | 0 | 0 | 0 | 1 | 7 | 21 | 30 | 30 | 27 | 24 | 3 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sinchã Issa Seidi is at