Guinea-Bissau: when is the rainy season?
The rainy season lasts from July to September, the dry season from November to May. Best time to travel, dry and with good holiday weather: November – December.
Precipitation by destination
Long-term precipitation per month, mm. Rainy months: well above the place's own average (at least 100 mm); dry months: half the average or less, or under 60 mm.
Guinea-Bissau: rainy season, quick answers
Guinea-Bissau: when is the rainy season?
The rainy season lasts from July to September. On average, 467 mm fall in August, the wettest month.
Guinea-Bissau: when is the dry season?
The driest months are November – May, with 0 mm on average in January.
Guinea-Bissau: when is the best time to avoid the rain?
November – December: dry months with good holiday weather at most destinations.
Guinea-Bissau: weather & best time to visitRainy season: when is the dry season?
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