South Twin Island

Good diving all year

Why dive here

With 164+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - South Twin Island offers some of Mergui Archipelago's richest reef diving. Water ranges 28-31°C, warmest April, May, June.

Best timeYear-round

WetsuitA 3mm shorty or thin full wetsuit

Marine lifeBlacktip Reef Sharks, Eagle Rays, Giant Moray Eels, Whale Sharks and Clownfish · 164+ species recorded

Water28-31°C · warmest April, May, June

CharacterReef dive · max 5-30m

StandoutExceptional marine biodiversity

South Twin feels a lot like diving in Thailand's Similans, but with far fewer divers. The granite island drops away into deep, intricate rock structures, creating gullies and long swim-throughs you can spend a good chunk of your dive exploring. In the shallower sections, among the larger boulders, we found some surprisingly delicate table corals, usually buzzing with anthias and damsel fish. It’s a great spot for divers who enjoy navigating dramatic underwater topography, rather than just drifting along a reef.

Typical South Twin Island Dive Profile

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

Today06:1718:1411h 57m daylightGolden hour 17:46

Reviews for South Twin Island

Conditions

Ocean conditions, forecast and tides for South Twin Island

South Twin Island Ocean Conditions

Monthly averages for South Twin Island, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (9.78, 97.85) (1km away)