Guinea-Bissau in September: where is it warmest?
In September, Bissau averages 29 °C by day.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Bissau | 42 | 29° | 28° | 5 h | 27 |
Guinea-Bissau in September: quick answers
Guinea-Bissau in September: where is it warmest?
The warmest places in September are Bissau (29 °C).
Guinea-Bissau in September: where is the sea warmest?
The sea is warmest at Bissau (28 °C).
Guinea-Bissau in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Bissau.
Guinea-Bissau month by month
Guinea-Bissau: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences