Koh Tao Dive Sites

Koh Tao dive sites are known to be some of the best in the Gulf of Thailand. There are over 30 dive sites around the island and most of them can be reached within a short boat ride. The average depth for most of the dive sites on Koh Tao are 14m to 18m with just a few going deeper than 30m. Most of Koh Tao dive sites are suitable for all levels of divers, with even advanced divers finding the underwater topography and aquatic life quiet impressive.

Koh Tao’s undersea scenery is just as amazing with coral encrusted rock peaks, lively reefs and some excellent wrecks. Koh Tao dive sites offer the opportunity to see huge shoals of fish, including; barracuda, jacks, reef sharks, bat fish and tuna. When you’re not watching out into the blue you’ll be mesmerised by the myriad of colourful reef fish all around you.

Whale sharks are most likely the star attraction around Koh Tao. Between the months of March and April and September and October you have an exceptionally high chance of finding them during your dive trip. You can also expect to see turtles, butterfly fish, clown fish and groupers amongst a huge selection of colourful tropical fish.

The most common types of fish you will see here consist of; batfish, trevally, parrotfish, fusiliers, angelfish, rabbit fish, trigger fish, wrasses, and butterfly fish. Koh Tao likewise has a lot of different kinds of tough and soft corals and, one of our favourites – Christmas tree worms. Less common, however likewise at many of Koh Tao dive sites are; moray eels, blue spotted rays, nudibranch and trigger fish.

Diving Seasons

Koh Tao dive sites can normally be dived throughout the whole year. However, the best season for optimum conditions is from March to September, with the busiest months for diving being July and August. The weather conditions throughout these periods is generally very hot with flat seas, offering the very best conditions for diving and of course your stay on Koh Tao.

Monsoon winds, rain and big seas can lower visibility anywhere from October to February. Nevertheless, this should’t put you off coming during these months. It rarely gets bad enough to disrupt the running of daily dive trips.

Be Prepared

Water temperature averages about 29°C all year round so no real need for a wetsuit here – although a rash vest is recommended. If you bring your own dive gear – pack light, no need for equipment such as gloves and reels, unless you’re doing some wreck diving. Conditions underwater around Koh Tao are excellent, with no real currents at most of the dive sites. There are plenty of shallow coral reefs for the less experienced.

Visibility can be sometimes get poor especially in November after the heavy rains – you can expect anything from 10 to 30 meters visibility otherwise.

Koh Tao pretty much has a dive site for all levels of diver. Drift diving, Tec diving and wreck diving can all be found here. Once you have dived here you will clearly see why Koh Tao dive sites are well known all over the world.