Richelieu Rock

Best months: Jan–May

Protected Area

Muko Surin

Why dive here

With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Richelieu Rock offers some of Similan Islands's richest pinnacle diving. Water ranges 29-31°C, warmest April, May, June.

Best timeJan–May

WetsuitA 3mm shorty or thin full wetsuit

Marine lifeBlacktip Reef Sharks, Eagle Rays, Giant Moray Eels, Whale Sharks and Clownfish · 173+ species recorded

Water29-31°C · warmest April, May, June

CharacterPinnacle dive · max 5-35m

StandoutExceptional marine biodiversity

Richelieu Rock stands alone in the open sea, an isolated pinnacle often drawing big pelagics. Schools of barracuda and trevally circle the main rock, while leopard sharks sometimes rest on the sandy bottom. Whale sharks are regular visitors, especially during the plankton blooms. We find it best for experienced divers comfortable with potential currents, offering a strong chance for larger animal encounters.

Typical Richelieu Rock Dive Profile

Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

Today06:1718:1411h 58m daylightGolden hour 17:46

Reviews for Richelieu Rock

Conditions

Ocean conditions, forecast and tides for Richelieu Rock

Richelieu Rock Ocean Conditions

Monthly averages for Richelieu Rock, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)