The Seychelles islands have a humid, tropical climate with temperatures ranging between 24 and 32 degrees Celsius. The North-West trade winds blow from October to May bringing a humid, warm air front, with low wind speeds. The South-East trade winds blow from May to September, generating a drier, cooler weather with stronger winds.
As the Seychelles islands are blessed with a year-long warm, tropical climate, its always a good time to visit, although different times of year may be better suited to your particular interests.
Two opposing trade winds generally govern the weather pattern: the north-westerly trades blow from October to March when wind speeds average from 8 to 12 knots; and the brisker south-easterly trades blow from May to September with winds of between 10 to 20 knots, bringing the cooler and windier conditions ideal for sailing.
The periods of calm between the trades produce fairly warm and wind-free conditions throughout April and also in October. Conditions for swimming, snorkelling and especially diving are superb during April/May and October/November when the water temperature sometimes reaches 29ºC and visibility is often 30 metres plus.