The smallest of a triptych of islands in the Gulf of Thailand, Koh Tao offers rock climbing, high-energy nightlife, beautiful bays, and Nang Yuan Island (Koh Nang Yuan)—three islets linked by spectacular white sandbars. But the signature things to do in Koh Tao are diving and snorkeling, maybe even with whale sharks. The island is one of the world’s top destinations for learning to dive, from half-day discovery experiences to days-long open water courses and advanced certifications. Some schools favor PADI, others SSI.
Koh Tao is a great choice for anyone who wants to combine diving and partying—although be aware of the risks of diving while dehydrated. For clear seas, clear skies, and buzzing bars, parties, and beach clubs, plan to visit over the July–August peak. Book ferries and accommodation in advance as it’s crazy busy. April and May are the peak months for whale shark sightings; the island is quieter then, but still has plenty of va-va-voom.
Koh Tao is a small island, so there’s no public transit or rideshare apps—although pickup trucks ply common routes, long-tail boats are easy to charter, and there are motorbike taxis. Most travelers get around under their own steam, by motorbike or (occasionally) bicycle. Be aware that riding a motorbike without a license that’s valid in your home country and Thailand will invalidate most travel insurance. No insurer will cover accidents while drunk, high, or helmetless.
Koh Tao offers some of the Gulf of Thailand’s best diving, including Chumphon Pinnacle and Sail Rock, so many travelers visit for PADI or SSI open-water certification. But price isn’t the only factor to consider. Smaller group sizes mean more personalized instruction. Folk with less common body types—such as very tall, lean guys or petite, plus-size women—will want to check that gear is available in their size. You can save time on some courses by studying online in advance.
