Koh Haa

  • must see
  • Tunnel
  • Wall
  • Sharks
  • Koh Haa
From Shore, From Boat
Diver Level
Average: 13.12 ft
Maximum: 147.6 ft
Medium to strong.
Average: 65.6 ft
Maximum: 131.2 ft
Extra Costs
National Park fee
Koh Haa is a collection of five separate islands: Ko Haa Nueng, Ko Ha Song, Ko Ha See, Ko Ha Sam and Koh Haa Yai islands. There is a pinnacle at the northern end of Koh Haa Yai, that has earned a nickname of “Koh Haa 6” and is a dive site of its own with a wide variety of soft and hard corals occupied by various marine life. The location features a good resort along with nice bars and a great variety of restaurants, ranging from tasty Thai street food to delicious international cuisine. Generally, there are about 10 dive sites in Koh Haa suitable for scuba divers and snorkelers of all levels (depths vary from 4-50m/13-164ft). Divers can explore varied underwater topography, many swim-throughs, walls, caverns, inter-connected chambers, a chimney, reefs, lagoons and a wide variety of marine life. The three main dive sites include the Cathedral (the series of caverns and swim-throughs near Koh Haa Yai islands), the Chimney (near Ko Haa Nueng island) and the Lagoon. Ko Ha Song, Ko Ha See and Ko Ha Sam islands form together a lagoon area that is ideal for beginners and more experienced divers; marine life is abundant. Diving here is great for photographers and macro life enthusiasts.

When to go

Diving is possible all year round. Though the best diving at Koh Haa is between November and Apri as there is a monsoon period from May to October. Annual average water temperature is around 29C/84F.

What to see

There is a lot to see. Barracuda, trevallies, octopus, harlequin shrimp, ghost pipefish, cuttlefish, squid, nudibranchs, moray eels, seahorses, porcelain crabs, rays, leopard sharks, as well as the occasional manta rays and whale sharks can be seen in the local waters. Divers will also enjoy coral gardens scattered around the island featuring several varieties of soft and hard corals, sea fans and barrel sponges.


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