Mergui Archipelago, Myanmar

Stewart 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 - Stewart Island offers some of Mergui Archipelago's richest 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

StandoutExceptional marine biodiversity

Stewart Island, or Ba Wei, sits just northwest of Cavern Island and it’s one of those spots that really delivers on its name: a massive hole punched clean through a smaller islet off its southern tip. You can grab some seriously dramatic topside photos before you even hit the water. Drop down the steep walls on either side of that islet and you’ll find a network of big swim-throughs. We’ve drifted through them with schools of snapper and fusiliers so thick they almost block out the light. It's a fun dive, especially for photographers and those who enjoy a bit of cave exploration without the full commitment of a true cavern dive. Just keep an eye on the current when you’re planning your entry and exit.

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

Reviews for Stewart Island

Conditions

Ocean conditions, forecast and tides for Stewart Island

Stewart Island Ocean Conditions

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