Western Rocky

Best months: Jan–May

Why dive here

With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Western Rocky offers some of Similan Islands's richest reef 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

CharacterReef dive · max 10-25m

StandoutExceptional marine biodiversity

Western Rocky marks the southernmost point of the Mergui Archipelago, a spot that often feels like a cross between a rock garden and a deep exploration. It’s a small, barren island, maybe sixty metres across, with a couple of smaller islets nearby. What we really come for are the walls and pinnacles, and that impressive swim-through right through the island's centre. Keep an eye out for nudibranchs tucked into crevices; we've even heard tales of whale sharks making an appearance here, though we didn't get so lucky on our last trip. It’s a dive for those who enjoy dramatic rock formations and the hunt for macro life, often with a decent current pushing you along.

Typical Western Rocky Dive Profile

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

Today06:1718:1511h 57m daylightGolden hour 17:47

Reviews for Western Rocky

Conditions

Ocean conditions, forecast and tides for Western Rocky

Western Rocky Ocean Conditions

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