Weather in September
With the sea temperature reaching the height of 29.4°C (84.9°F),
September in
Petit Bourg holds the title for the annual heat peak. The sustained warmth from
August translates into an overflow of people thronging the beachfront. September weather characteristics prepare locals for the upcoming changing season, with slightly decreasing daylight hours. As
October looms, there's a noticeable shift towards slightly shorter days and a decrease in temperature.
Sea temperature
The month with the warmest seawater is September, with an average sea temperature of 29.4°C (84.9°F).
Note: Ideal surface water temperatures for any water activity fall between 25°C (77°F) and 29°C (84.2°F), offering maximum enjoyment for lengthened periods.
Daylight
In September, the average length of the day is 12h and 13min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:19. On the last day of September, sunrise is at 05:56 and sunset at 17:56 AST.