Belle Mare lies on the east coast of Mauritius, where the Indian Ocean meets a lagoon fringed by reef and seagrass. The standout feature is Belle Mare Passe, a drift dive through a wall and canyon system that draws pelagic species including blacktip reef sharks, Napoleon wrasse, and dogtooth tuna on strong currents. Shallower shore-entry sites at Trou d'Eau Douce and along the beach suit beginners, while the pass itself is best reserved for intermediate divers comfortable with current. Research suggests November through May offers the best diving conditions on this coast.
Monthly water temperature across Belle Mare's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Temperatures peak around twenty-eight degrees from January through April and drop to the low-to-mid twenties between July and October. Research indicates November through May is the preferred window for diving here, when currents through the pass align with the warmest, clearest water.
Water temperature around Belle Mare ranges from about 24°C in July to 28°C in January, based on satellite sea-temperature data for its dive sites.
In the warm season (about 28°C) a rash guard or 3mm shorty is comfortable in Belle Mare; in the coldest months (about 24°C) step up to a 3mm full suit.
Fin maps 6 sites in Belle Mare (4 scuba diving sites and 4 snorkelling spots, with some suited to both).
1 more site to explore
