Things to Do in Koh Tao

Koh Tao has whale sharks. This tiny island in the Gulf of Thailand, just 21 square kilometers, ranks among the world's best diving spots with clear waters, coral reefs, and marine life that includes barracudas and colorful tropical fish. Cheap diving courses draw backpackers globally. The island offers more than diving. Granite boulders and good beaches like Sairee Beach and Shark Bay dot the coastline, while beach bars pump reggae music for an international crowd of dive instructors and long-term visitors. Tourism changed this former fishing village—but it still feels intimate.

The food scene reflects international divers. Mae Haad pier serves cheap Thai dishes and fruit smoothies, while Sairee Beach packs in restaurants, beach bars, and international cuisine from Italian pizza to Western comfort food. Try som tam, massaman curry, and fresh grilled fish. Beachfront dining costs more but delivers sunset views. The island has excellent bakeries and coffee shops for Western tastes, plus beach bars with cocktails and fire shows. Local dishes cost 80-150 THB, Western meals 300-500 THB.

March to September works best. You'll get sunny skies, calm seas, and diving visibility up to 30 meters during the dry season when conditions are most reliable. April and May are hottest but offer the clearest waters. October to February brings rain and rough seas. Diving continues but boat schedules can change, especially November and December when heavy rainfall and strong winds hit. March to May is peak season with higher prices—June to August balances decent weather with fewer crowds.