Thailand is a unique country which offers guests amazing culture and fantastic diving. Also known as the country of smiles, the influence of hundreds of years of Buddhism can be felt deeply in the culture and heart's of the Thai people. They are the only country in South east Asia never to be colonised by Europeans, have a deep patriotism and absolutely love their King. From the indigenous hill tribes in the north of the country around Chiang Mai between Laos and Burma, to the quiet white sand beaches and gorgeous limestone cliffs located off the west coast, and then to the famous night life of bustling Bangkok; there is something for everyone to enjoy in Thailand.
Most of the best dive sites are found primarily along the western coast of Thailand, in the Andaman Sea. Located nearby Phuket Island, famous Similan and Surin National Parks beckon divers to do 4 or 5 day liveaboard trips out to see their stunning landscape and rich fish life. Further down in the South Andaman Sea, nearby Krabi and Koh Lanta, divers can experience more remote and less visited areas, but still with beautiful scenery, coral reefs, and fish life; all which rival that of even the Similan and Surin Islands.
Most of the diving to the Similan Islands is done between November to April, and to the South Andaman Sea from August to October. The south west monsoon, which brings most of the yearly rain to Thailand, runs from May through to September, when diving on the west coast is most limited. This time of year is considered the low season; however the east coast of the country in the Gulf of Thailand is still relatively calm. So it is very possible to dive and travel in Thailand all year round.
The diving in the Similan Islands and South Andaman Sea is varied and includes many different types of dive sites; from slopping coral reefs, submerged sea mounds, massive stacked boulders with swim through caves, mini-walls, and wrecks; it is all there to be dived and explored. During the calm dry seasons, visibility in the northern Similan Islands can range from 15 / 30 meters. The South Andaman Sea usually has a bit of lower visibility of 10 / 20 meters. Mantas can often be found around Koh Bon in the north and Ko Haa to the south near Koh Lanta. Whale sharks are seen mostly at the world famous Richileu Rock in the Surin Islands group, just north of the Similan islands.