Diving in Seychelles

Weather and Climate

Seychelles has the blissful advantage of being near the equator with constant temperatures that rarely drops below 24 degrees Celsius. Throughout the year, temperatures range between 24 to 32 degrees Celsius. Our tropical climate is marked by two different seasons namely the North West Monsoon and the South East Trade Monsoon.

The North west monsoon runs from November to March. It brings in heavy rains and choppy seas, interspersed with calm, sunny periods. Wind speed varies between 15 to 22 kph. Highest rainfall is between December and February.

The South East monsoon runs from June to September. Cooler and drier period with strong wind with wind speed up to 37 kph leading to rough seas for most periods.

Tye best weather usually comes at changeover between the seasons, in March/April and October/November. Although not guaranteed, the weather in these months is usually fairly windless, bringing calm seas and blue skies.

Sea Temperature and Visibility

The sea temperature varies from 23 to 30 degrees Celsius throughout the year with the lower temperatures during the southeast monsoon from June to September. Once the North West monsoon arrives October/ November the temperatures start to rise and by April the water can be balmy 30 degrees Celsius.

The change in Monsoon can also affect underwater visibility. The south east Monsoon brings cold upwellings of plankton rich water, which can reduce the visibility to only a few meters. During the Northwest monsoon the visibility is a bit better with right conditions it can be over 30m. it is to be noted the water visibility is variable throughout the yar and rough seas can often stir up sand and sediment particularly on the sites close to the shoreline.