French Guiana: when is the rainy season?
The rainy season lasts from April to June, the dry season from September to October. Best time to travel, dry and with good holiday weather: September – October.
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.
French Guiana: rainy season, quick answers
French Guiana: when is the rainy season?
The rainy season lasts from April to June. On average, 437 mm fall in May, the wettest month.
French Guiana: when is the dry season?
The driest months are September – October, with 48 mm on average in September.
French Guiana: when is the best time to avoid the rain?
September – October: dry months with good holiday weather at most destinations.
French Guiana: 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