Scuba diving in Thailand offers miles and miles of pristine tropical coral reefs and an unmatched marine life experience. No wonder why millions of adventurers flock in to explore the underwater world. Whether it's a rocky place with wild current sweeping up the shore or landscapes with vibrant and colourful coral reefs, scuba diving in Thailand ticks off all the boxes on a diver's bucket list.
Scuba diving season in Thailand runs all year round, but the most optimal site conditions are between November to April. If you want to spot whale sharks or manta rays in your dives, you must go for scuba diving between February and May. This is the time for blooming plankton. The temperature of the water is warmest from February to May and coldest from June to October. On the West Coast of Thailand, May to October is the offseason because the visibility massively drops. Some sites are closed during these periods. Here's a brief about the best scuba diving sites in Thailand to help you plan your underwater adventure:
Here is the list of 16 Best Spots To Experience Scuba Diving In Thailand
Be prepared to see exotic marine animals like manta rays and white sharks at the beautiful diving spots here. With the waters so immaculate, the visibility is as clear as glass. This is probably why the best scuba diving spots in Thailand are housed on this island. The island also presents beautiful emerald green waters for snorkelling expeditions. Located 37 miles from the west coast of Thailand, in the Phang Nga, the islands are situated far from the mainland and are not frequented by tourists, keeping the diving spots unspoiled. In addition to the marine life, the coral reefs here are vast and pure, untouched by humankind. This is because the islands have been a part of UNESCO's development project since 1981. The Richelieu Rock diving spot found here is known for the whale sharks that live here, which you will be guaranteed to spot in initial summer months, especially during February to April.
Highlights:Widely considered the best scuba diving experiences in Thailand. Spot reef sharks, whale sharks, tomato anemonefish, barramundi and explore the largest hard coral diversity in Thailand.
Location: Ko Phra Thong, Khura Buri District, Phang-nga, Thailand
Fee: For a day trip diving at Richelieu Rock, a part of the Surin islands, the total cost is around 6000 THB, which includes the prices of diver, park and other equipment. Food, taxis and dive guides are the basic inclusions in such packages.
Known For : Diving and Snorkelling
Similan Islands are arguably the most stunning diving sites in Thailand and all over the world. Located about 50 miles from Phuket, the Similan Islands are a set of eleven remote islands. The islands' beauty is in the hands of the Thai government who are protecting a plethora of hard and soft corals since 1982. There's a wide array of marine animals in the pristine waters that surround the island. You will find around 20 different dive spots in the area within, all boasting exclusive underwater sceneries. The Elephant head (also known as the Hin Pusar) is the most famous dive site here due to its maze-like structure formed by rocks and channels with a depth of over 40 meters.
Highlights: Pristine beaches, shimmering clear waters, an abundance of marine life, hammocks under the casuarina trees and one of the best scuba diving experiences in the whole of Thailand.
Location: Lam Kaen, Thai Mueang District, Phang-nga, Thailand
Fee: The prices of day trip diving at Similan Islands start from 5600 THB, which includes 2 great dives without any need for staying overnight. There are liveaboards ranging from 13000 THB and higher.
Best Time : November to April
Located 200 kilometer northwest from Phuket, the Richelieu Rock is a popular dive site in the Andaman Sea. It is a part of the Surin National Park. It has horseshoe shaped reef with purple corals and abundant marine life in the form of small fishes and shrimps to large pelagics like whale sharks, grouper, barracuda and manta ray. It is very well known for housing varieties of rare marine creatures like sea horses, frog fishes, harlequin shrimps etc. It is one of the most iconic dive sites in Thailand, accessible by dive boats during several day cruises. There are speedboats heading to Richelieu Rock.
Highlight: Purple coral, horseshoe reef, marine critters, small fishes, speedboats and liveaboards.
Location: Surin Islands, Near Phuket, Thailand
Fee: For a day trip dive at Richelieu Rock, the total cost is around 6000 THB, which includes the prices of diver, park and other equipments. Food, taxis and dive guides are the basic inclusions in such packages.
Phi Phi islands are a group of islands off the coast of Thailand, spread over an area of 12 square kilometres. There are many places shallow sea where the coral is easily visible, making the islands a perfect place for both scuba diving and snorkelling. The southern end of the islands is composed of 2 rocky islands which are the best places for diving. There is a natural archway in the soft corals near Koh Bida Nai which is usually full of bait-fish. Loh Samah Bay is the east coast of Phi Le which is famous for nighttime scuba diving. Here, there is an extensive network of hard corals which is filled with small to medium-sized fishes. There is also a canyon here, which is a photographer's paradise.
Highlights: Night diving, Canyon, Photography, soft and hard corals perfect for underwater videography
Location: Near Phuket and Krabi, Thailand
Fee: The cost for a dive trip to Koh Phi Phi is 4000 THB.
In contrast to the party ridden islands spread across all of Thailand, the Phang Nga Bay houses one of the quietest and tranquil islands of Koh Lanta. The most famous diving sites here - Hin Daeng and Hin Muang are preserved and protected by a national park. Diving enthusiasts must visit this site for a life-changing experience as the marine life here is not found elsewhere all over the world. This is probably why many travellers believe the two places to be the best in the world. What makes it so unique? For starters, soft corals found here are seen in shades of red. Yes, not shade, shades of red. Imagine bright red corals with a beautiful backdrop of the never-ending sea. Can it get any better than this? In addition to the stunning corals, the site is also home to whale sharks and manta rays. While Hin Daeng is known for its red corals, Hin Muang, the neighbour is known for the purple corals that are found here. The place is frequented by professional divers as the depth ranges from 40 to 60 meters.
Highlights: Shorter liveaboard trips, colourful soft corals, vast schools of trevallies, barracuda, rainbow runners, reef sharks are the striking features of both. Hin Daeng's most impressive sight is that of a silver wall of trevally cruising past. Hin Muang has the highest vertical wall of Thailand, with our pe coral reefs and vast carpets of anemones.
Location: Ko Lanta District, Krabi, Thailand
Fee: The prices for a day dive is 4300 THB which includes two dives a day. This includes lunch and refreshments.
With about 25 dive sites to explore, Koh Tao is a diver's paradise. All these diving sites lie around the island and can be accessed by boats. You can avail a two dive trip in the morning, which operates at all of these sites, to explore the plethora of colourful reef fish, coral encrusted rock pinnacles and shipwrecks. Koh Tao gives you the chance to eye passing pelagics like whale sharks and spotted eagle rays. The sites have hard and soft corals, calm shallow bays, limestone formations, coral gardens, reefs nursery and what not. The visibility drops during monsoon time, otherwise diving goes whole year round.
Highlights: Reef fishes, night diving, rock pinnacles, shipwrecks, coral gardens, whale sharks.
Location: Koh Tao, Thailand
Fee: 2500 THB at Crystal Dive. May vary for other operators.
Phuket attracts herds of tourists - backpackers who are seeking the best of nightlife, families who want to unwind enjoy a good time with their kids, and adventurers who wish to explore the underwater world at breathtaking diving sites. Phuket's most famous dive site is King Cruiser wreck. It's no surprise that ship-wrecks make up for the best diving exploration tours. King Cruiser Wreck is no less. There are coral-ridden washrooms and abundant marine life at this passenger ferry. While many ships are purposely wrecked to make it into a dive site, the King Cruiser Wreck has rich history attached to it. Over 500 passengers jumped out of the ship when it crashed in 1977. Everyone was rescued, except for the ship.
Highlights: Artificial reefs covered with scorpion fish, many species of sharks, a rich array of marine life are some of the striking features of the King Cruiser Wreck. If you are lucky, you can have a look at the big red octopus and the large resident Hawksbill Turtle.
Location: East Phuket, about 9 miles west of Phi Phi Don
Fee: The 3 dive day trip at Phuket Dive Tours start from 4000 THB. The price is for certified divers, with food, water and beverages as inclusions.
One of the most famous dive sites around Koh Tao is Chumphon Pinnacle, situated in close proximity to the island and boasting great visibility throughout the year. One can expect a big granite pinnacle and a series of smaller pinnacles from the dive site. On top of the pinnacle are the pink anemones. There is a giant grouper on the north-west between the two smaller pinnacles. The Baracuda rock is the resting place for the giant grouper. The Chumphon Pinnacle is popular among experienced divers.
Highlights: Pinnacles with pink anemones, Giant grouper and abundant marine life. If you visit between March to May or August to October, you can spot the Whalesharks, the biggest visitors.
Location: Koh Tao, Thailand
Fee: Expect paying 2000 THB for a 2 dive trip.
HTMS Chang is the biggest shipwreck in Thailand. It was originally commissioned during the World War II by US navy and later handed to the Thailand Government. It has been supplying troops and vehicles to the Thai Navy, since. The point of interested about this shipwreck is the artificial reef that it has created after being sunk in 2012. This has been attracting a lot of scuba divers. There are three main decks and seven sub decks. This is suitable for both usual and night diving. The captain's cabin and mast are a must explore as is the marine life. Plenty of tropical fishes, octopuses and squids can be spotted while diving.
Highlights: Night diving, Butterflyfish, batfish, groupers, shrimp fish and the 100 metre long ship are worth exploring. If you are lucky enough, you could get to see the whale shark.
Location: Ko Chang, Thailand
Fee: Two wreck dives at HTMS Chang with speedboat for half day costs approximately 3500 THB. A night dive including the use of torch costs 1900 THB.
Located on the island of Koh Tao, Sail Rock is a perfect place to go diving in Thailand. Over a thousand islands are housed in Thailand but Koh Tao stands out and remains the top choice for divers. The scuba diving cost here is lower and the experience is just as good as anywhere else in Thailand. Also known as Hin Bai, this diving spot is a 90-minute boat ride away from the main island. Keep your eyes open as you will witness the Gulf of Thailand with rocks rising out of it as the rocks are eight meters above the waters. As the site is far away from the mainland, the marine life here is distinctive and pure. Diving here goes down to 40 meters under the sea and is ideal for beginners and professionals alike. The cave-like structure of the rock (also goes by the name chimney) is famous amongst expert divers for the challenges it throws at them.
Highlights: Colourful cup corals, giant black coral, white-eyed morays, ragga scorpionfish, big schools of fishes, the pristine underwater scenery and the occasional Whale shark visitation.
Location: 15 Moo 7 Chaloklam Ko Pha-ngan, Suratthanee
Fee: Every Tuesday, Crystal organizes day trips to Sail Rock. This consists of two dives. The price is 2500 THB, inclusive of all equipment hire and scrumptious Thai lunch during the surface interval.
True to its name, Shark Point is where divers will come across deadly Leopard sharks. Located a 90-minute boat ride away from Phuket, this diving spot is for the ones who want thrills. Fret not, as the sharks here are not the ones you would have seen in a Speilberg film. These animals are submissive, and as the dives are done in groups, there's no danger. In addition to Leopard Sharks, this unique point also boasts Moray Eels, tropical fishes, and colourful corals all over the place. The site is a large one to explore, and if done professionally, a dive can take a few days to complete. But its worth it. The depth ranges from 10-30 meters, perfect location for amateurs and experts alike.
Highlights: Abundant and soft corals, habitats of thousands of fishes, leopard sharks resting on the sand, the colourful reefs exploding with life, suitable for wonderful underwater videography.
Location: 16 miles east of Phuket
Fee: The 3 dive day trip for Shark Point for certified divers is 4000 THB. The inclusions are food, water and beverages.
Koh Samui is Thailand's second largest island located in the gulf. It is popular for its dense rainforest, coconut beaches and palm trees, but is also a popular diving spot. Chumphon Pinnacles is one of the more challenging diving spots which is known for powerful currents. Green Rock is popular for its undersea structures such as archways, caves and caverns. Hin Wong is another beautiful diving spot, where you might get to see turtles. White Rock is a spot where you'd go if you want to be engulfed by a swarm of butterfly fish.
Highlights: Undersea structures like archways, caves and caverns, sea turtles and butterfly fishes.
Location: Koh Samui, Thailand
Fee: The diving price starts at 3000 THB and can go higher as per varying packages.
New to scuba diving? The Island of Koh Ma is just the place for you. Rookie divers from all over the world are seen here wanting to get certified in diving, or those drivers who want more practice before they face more significant challenges. The lively islands are home to a plethora of marine species, the most common one being the vibrant and colourful parrotfish and the one of a kind barracudas. Getting to Koh Ma is as plain sailing as it can get. You can catch a boat from Koh Phangan from a boat or even a car. In addition to the unmatchable diving experience Koh Ma provides, it is also famous for tourist spots. There are a lot of accommodation options on the island, making your trip quite a getaway from the hustle bustle of other widely popular and crowded islands of Thailand.
Highlights: Marine life such as butterflyfish, grouper and shrimps, some unusual critters are some of the sights one can experience on an easy dive. The crazy clownfish, juvenile stingrays hiding just under the surfaces, schools of Razorfish are the common sightings. If you are lucky enough, you can encounter some cuttlefish. There are seahorses galloping across the sands, in search of a mate.
Location: Koh Phangan, Suratthanee 84280 Thailand
Fee: The dive trips for certified divers start from 2300 THB, with two dives.
Koh Chang, also called the Elephant Island, offers some good diving opportunities. This includes wreck dives as well as rock pinnacles. There are beautiful reefs and an abundance in marine life to keep you enthralled with every dive. The diving can start from the beach, with a calm and shallow start. While on Koh Chang island, don't miss out on the rainforests and the pristine beaches. Some of the popular dive sites in Koh Chang are HTMS Chang wreck, T11 wreck, Thonburi Wreck etc.
Highlights: Wreck dives, diverse marine life, sharks if you are lucky enough, beaches and rainforests.
Location: Ko Chang, Thailand
Fee: The prices for dives vary for the various wrecks and rock pinnacles. The usual day trip dive pricing is 3000 - 3500 THB for a wreck dive. The inclusions can vary.
Looking for a unique scuba diving spot? Koh Tachai is the place to go. Also known as 'The Dome', this dive spot is situated just off the Koh Tachai island. It is a dome-shaped submerged pinnacle made of gigantic granite boulders. The two interesting dive spots are the Pinnacle and the Tachai Reef. The divers can enjoy the swim-throughs on the west, hard corals and sea whips on the east, soft corals and sea fans on the north and various glass fishes, barracuda, leopard sharks etc on the smaller pinnacle. While Tachai Reef is for beginners, Tachai pinnacle should be explored only by advanced divers only.
Highlight: Dome shaped, Boulder, Sunset and Night dive Bush and mountain coral, Whaleshark and Leopard Shark.
Location: Similan Islands, Thailand
Fee: The price for a day trip dive is 6000 THB inclusive of speed boat to Tachai.
Towards North East of the Similan Islands are the Koh Bon dive sites, which is on the route to most of the Thailand liveaboard trips. There are two major dive sites in Koh Bon - the ridge sticking out from the western side of the island and the deep pinnacle on the northern side. The Koh Bon Ridge is the best place in the area to spot manta rays. There are soft, pastel coloured corals, leopard sharks in the deeper water and elusive purple fire goby. The pinnacle is a great dive for the experienced divers.
Highlights: Manta rays, purple fire goby, leopard sharks, sweetlips and snappers.
Location: Similan Islands, Thailand
Fee: A day trip dive to Koh Bon costs 5800 THB.
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Whether it's swimming with radiant and vivid fishes, admiring the bright coloured corals or exploring shipwrecks, one can't get enough out of the deep and mysterious sea. Every dive you take here in the Land of Smiles is bound to be better than before. So plan a diving trip on your next holiday to Thailand, and I am sure you'll take back a bucket full of memories.