Saint-Pierre sits on the southwest coast of Réunion, where the Indian Ocean meets a volcanic shoreline of lava flows, walls, and reef formations. The five sites in our database range from shallow sheltered lagoons and rocky pools suitable for beginners through to the Saint-Pierre Wall, a vertical drop-off that descends to depth and demands boat access due to strong currents. Visibility can reach up to thirty metres, particularly at deeper sites, and water stays warm year-round, cooling slightly during the austral winter months. Divers encounter species including emperor angelfish, geometric moray, honeycomb grouper, and mottled Spanish dancer across reef, wall, and artificial reef terrain.
Monthly water temperature across Saint-Pierre's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures are warmest from late austral summer through early autumn, then drop noticeably through the winter months before climbing again toward the end of the year. The cooler winter period, broadly from mid-year onward, is generally considered the better season for visibility and for the chance of encountering humpback whales in the area. A thin wetsuit suits the warmer months; a thicker exposure suit is advisable during the cooler period.
Water temperature around Saint-Pierre 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 Saint-Pierre; in the coldest months (about 24°C) step up to a 3mm full suit.
Fin maps 5 sites in Saint-Pierre (3 scuba diving sites and 2 snorkelling spots).
1 more site to explore
