Ang Thong National Marine Park is a breathtaking archipelago of 42 islands in the Gulf of Thailand, located about 30 kilometers northwest of Koh Samui. This protected marine park offers some of the most spectacular natural scenery in Thailand, with towering limestone cliffs, hidden lagoons, pristine beaches, and vibrant coral reefs.
Whether you're seeking adventure or relaxation, an Ang Thong Marine Park tour is an essential part of any Koh Samui itinerary. This comprehensive guide covers everything you need to know to plan your visit.
What is Ang Thong Marine Park?
Established in 1980, Ang Thong (meaning "golden bowl") Marine Park covers an area of approximately 250 square kilometers, including 42 islands, coral reefs, and mangrove forests. The park is home to diverse marine life, including sea turtles, reef sharks, and countless tropical fish species.
The main attractions include:
- Emerald Lagoon (Talay Nai): A stunning inland sea surrounded by towering limestone cliffs
- Viewpoint: A challenging hike to the top of Ko Wua Ta for panoramic views
- Pristine beaches: Several beautiful beaches on various islands
- Snorkeling spots: Colorful coral reefs with abundant marine life
- Kayaking: Explore hidden caves and lagoons by kayak
How to Get There
All tours depart from Koh Samui's various piers. The main options are:
- Speedboat: Fastest option (45 minutes), best for those short on time. Typically departs 8-9 AM.
- Slow Boat / Catamaran: More relaxed journey (1.5-2 hours), often includes breakfast or lunch on board. Great for families and those prone to seasickness.
- Private Charter: Rent your own boat for a custom itinerary. More expensive but offers flexibility.
What to Expect on a Typical Tour
A standard Ang Thong Marine Park day tour follows this general schedule:
- 08:00-09:00: Hotel pickup and transfer to pier
- 09:00-10:00: Boat journey to the marine park
- 10:30: First stop — snorkeling at one of the reef spots
- 12:00: Lunch at the park's main beach
- 13:30: Kayaking in the Emerald Lagoon
- 14:30: Hike to the viewpoint (optional, about 30-45 minutes)
- 16:00: Departure back to Koh Samui
- 17:00-18:00: Return to hotel
Best Tour Operators
Here are some highly recommended operators:
- Ang Thong Marine Park: Official park operator, reliable and good value
- Samui Island Tour: Popular operator with English-speaking guides
- Ocean 360: Luxury option with smaller groups
- Safety Stop: Excellent for families with young children
Cost Breakdown
Here's what to expect to pay for an Ang Thong tour:
- Basic shared tour: 1,500-2,000 THB ($45-$60 USD) per person
- Premium tour: 2,500-3,500 THB ($75-$100 USD) per person
- Private charter: 15,000-30,000 THB ($435-$870 USD) for the whole boat
- Park entrance fee: 300 THB ($10 USD) per person (usually included in tour price)
Insider Tip
Book your tour at least a day in advance, especially during peak season. Early morning tours (departing 7-8 AM) offer calmer seas and fewer crowds at the viewpoint. Bring reef-safe sunscreen as it's required in the marine park.
When to Visit
The best time to visit Ang Thong Marine Park is during the dry season (December to April), when seas are calm and weather is sunny. The park is closed from November 1 to December 15 annually for conservation. Avoid visiting during the monsoon season (October-November) when tours may be cancelled due to rough seas.
What to Pack
- Reef-safe sunscreen (required)
- Swimwear and towel
- Underwater camera or GoPro
- Comfortable hiking shoes
- Dry bag for belongings
- Cash for extra expenses
For more activities on Koh Samui, check out our 20 Best Things to Do in Koh Samui guide and explore Best Beaches in Koh Samui.
Frequently Asked Questions
How long does an Ang Thong Marine Park tour take?
Most day tours to Ang Thong Marine Park depart early morning and return around late afternoon, typically 8-9 hours. Speedboat tours are faster (about 45 minutes each way), while slow boat tours take longer (about 2 hours each way).
Can you stay overnight at Ang Thong Marine Park?
No, overnight stays are not permitted in Ang Thong Marine Park. All visitors must leave the park by sunset. However, some tour operators offer multi-day sailing trips that include nights on the boat outside the park boundaries.
What should I bring to Ang Thong Marine Park?
Bring: reef-safe sunscreen, swimwear, towel, underwater camera, cash for park fees and tips, comfortable hiking shoes for the viewpoint, and a dry bag for your belongings. Avoid bringing plastic bottles as the park has a strict no-plastic policy.
Is Ang Thong Marine Park worth it?
Absolutely! Ang Thong Marine Park offers stunning natural beauty with its emerald lagoons, limestone cliffs, and pristine beaches. The snorkeling is excellent, and the views from the viewpoint are unforgettable. It's one of the top attractions near Koh Samui.