Suthep Bay

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 - Suthep Bay 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

StandoutExceptional marine biodiversity

Suthep Bay, tucked into the eastern side of Similan Island #4, is one of those places that feels surprisingly calm, even when other sites are buzzing. We love dropping in here, especially first thing in the morning. The gentle slopes are covered in fields of staghorn coral, just stretching out as far as you can see, almost hypnotic in their rhythm. You’ll spot a lot of parrotfish here, the big dusky ones and the bright saddled varieties, munching away. Keep an eye out for the blue-spot blennies popping their heads out of the sand, they’re always a fun find. The silversides, though, are our favourite – sometimes the schools are so dense they shimmer like a liquid wall, then part to reveal a slender maori wrasse cruising through. It’s a beautifully relaxed dive, perfect for photographers wanting to take their time or for divers who just want to soak in the sheer scale of the coral.

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Reviews for Suthep Bay

Conditions

Ocean conditions, forecast and tides for Suthep Bay

Suthep Bay Ocean Conditions

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