Weather in September
An excellent water temperature of 28.5°C (83.3°F) makes September
, French Guiana
, a prime for swimming and other water activities.
In September, the average sea temperature is 28.5°C (83.3°F).Note
: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.
In Remire-Montjoly, the average length of the day in September is 12h and 8min.
On the first day of the month, sunrise is at 06:22 and sunset at 18:35. On the last day of September, sunrise is at 06:16 and sunset at 18:21 -03.