Ang Thong National Marine Park is a protected archipelago of 42 islands featuring limestone mountains, caves, inland lagoons, and white-sand beaches. Home to the famous Thale Nai emerald lake inside an island. Only accessible via organized tours from Koh Samui.
Adults 300 THB, children 150 THB (national park fee, tours separate)
December to April (dry season). Park is CLOSED from October 20 to December 20 due to monsoon conditions.
faq.subtitle Ang Thong National Marine Park
No public ferries - only organized tours from Koh Samui or Koh Phangan. Book a full-day tour that includes transfer and lunch.
Average temperature by month
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