When to go?
In common with tropical islands, on or close to the Equator, Seychelles experiences very little variation in temperature. In general, it is always warm with no extremes of heat or cold.
Green Season - November To March
The north-west trade winds are blowing at this time, with the weather being hot (>30°C) and humidity high. There is more chance of rain and fairly cloudy during December, January and February. The water is calm so that underwater visibility is excellent – approximately 15-40 metres and seawater temperatures are around 27° - 29°C.
In January, the green turtles begin to nest at night, with their hatchlings starting to appear at the end of this period, in March. Meanwhile, hawksbill turtle eggs hatch throughout this period, with daytime nesting sightings possible from November to January.
Transition Season - April; October
Both these months feature the transition between the end of the north-west trade winds and the beginning of the south-east trade winds. This change in season comes with a moderate climate and a mix of the green and dry seasons.
One can still see green turtles nesting in April, while October is in the middle of their hatching period. October is also when the hawksbill turtles can be seen nesting during the day.
Dry Season - May To September
This is the sunniest part of the year, as well as being cooler (25°-30°C) and drier than the green season. Seas are a little more choppy – perfect for sailing and windsurfing – with an underwater visibility of 5-15 metres and seawater temperatures of 24° - 25°C.
While whale sharks are seen all year around, sightings peak in August and October to January, while this period in general is prime nesting season for seabirds. Green turtles nest during the night until September, with their eggs hatching throughout this time.