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Diving in Koh Yao Yai

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When to go to Koh Yao Yai

The tropical climate is characterized by year-round high temperatures and fairly little rainfall due to the location.

The best time to dive is from November to May.

The air temperature ranges from 25-32C/77-90F and the water temperature is about 29C/84F all year round.

The average water visibility varies from 10-30m/33-98ft.


What to see

There are some beautiful islands around with coves, caverns, caves, and stunning secluded beaches. Underwater mountains, coral gardens, undersea rock formations, and hard and soft corals are all there, alongside a rich variety of marine life including whale sharks, silvertip sharks, grouper, and manta rays - enough to impress even the most experienced of divers. Divers can also encounter colorful tropical fish, eels, and turtles. 

Scuba diving in Koh Yao Yai

Ko Yao is an island between Phuket and Krabi. The closest airport is Phuket International Airport. Koh Yao Yai is one of two main islands on Ko Yao (the second is named Ko Yao Noi). There are no crowds, and it is a quiet and clean place. It is the largest island in Koh Yao District (due to a lack of (basic) infrastructure in some areas of the island) and has many interesting beaches, such as Ao Thi Kud, Ao Klong Son, Ao Sai, Lo Pa Raed Beach, Ao Laan, Ao Hin Kong, and Laem Nok Og. Lo Jaak Pier is an important pier from Koh Yao to Phuket. The water at the pier is clear, and schools of fish swim near the bridge at the pier. Ko Yao Yai has natural beauty and remains the least developed of the two islands. This is a quiet tropical paradise with rubber tree farms and small villages. Scuba diving can be done by reaching some islands nearby, that offer great diving opportunities.


Most popular dive sites

The nearby dive sites are Koh Bida Islands (near Koh Phi Phi), the King Cruiser wreck, Shark Point, and Anemone Reef.  Anemone Reef is a unique dive site with a huge limestone pinnacle. This site is famous for its vast fields of sea anemones. Schools of tropical fish, snappers, and colorful clownfish, along with larger game fish like tuna and barracudas, and the occasional leopard shark can be seen there. Anemone Reef is also famous as a site for viewing lionfish sometimes encountered in groups of twelve or more. Diving here can be done by boat and is suitable for divers of all levels of experience.