Ang Thong National Marine Park: A Day Trip from Koh Samui
Updated: 4 hours ago
Located in the Gulf of Thailand, Ang Thong National Marine Park is one of the most memorable day trips from Koh Samui. The protected archipelago is made up of 42 limestone islands surrounded by turquoise waters, hidden lagoons and dramatic coastal landscapes.
Unlike Koh Samui’s developed beaches and resort areas, Ang Thong offers a chance to experience a more untouched side of Thailand. A typical day trip combines scenic viewpoints, kayaking, snorkelling and relaxing on quiet beaches, making it a popular addition to a Koh Samui itinerary for couples, nature lovers and adventure seekers.
Ang Thong National Marine Park At A Glance
Mu Ko Ang Thong National Marine Park is a protected marine area known for its limestone cliffs, jungle-covered islands and unique natural formations. The name “Ang Thong” means “golden bowl”, reflecting the beauty of this island group scattered across the sea.
The park remains largely undeveloped, with no large resorts or urban areas within the islands. This helps preserve its natural landscapes, including hidden bays, caves, beaches and marine habitats. Visitors usually explore Ang Thong as a full-day boat trip from Koh Samui rather than staying overnight.
Location: Gulf of Thailand, around 30 km northwest of Koh Samui
Established: 1980
Number of islands: 42 islands
Total area: Around 102 km²
Why Visit Ang Thong National Marine Park?
Ang Thong is different from a typical beach day in Koh Samui. Instead of staying in one location, visitors can experience several landscapes in a single trip, from viewpoints above the islands to quiet beaches surrounded by limestone cliffs.
The park is especially popular because it combines several experiences:
Experience | What to Expect |
Scenic viewpoints | Panoramic views over the 42-island archipelago |
Emerald Lagoon | A hidden saltwater lake surrounded by limestone cliffs |
Kayaking | Exploring coastal caves, cliffs and quieter areas |
Snorkelling | Discovering marine life around sheltered waters |
Beach relaxation | Swimming and relaxing on untouched beaches |
Must-See Places in Ang Thong National Marine Park
Koh Mae Ko
Koh Mae Ko is one of the most recognisable islands in Ang Thong National Marine Park, home to the famous Talay Nai Lagoon, an emerald saltwater lake surrounded by limestone cliffs. Visitors can follow a short but steep trail to reach the viewpoint above the lagoon, where the contrast between green waters, dramatic rock formations and surrounding islands creates one of the most memorable views in the Gulf of Thailand.
Opening hours: 8:00 AM - 5:00 PM daily (park hours)
Entrance fee: 300 THB for foreign adults; 150 THB for children
Best for: Photography, scenic viewpoints and first-time visitors exploring Ang Thong National Marine Park.
Koh Wua Talap
Koh Wua Talap is the main island of Ang Thong National Marine Park, where the visitor centre, restaurant and park facilities are located. Its highlight is the famous viewpoint overlooking the archipelago, reached through a steep, 500-metre uphill climb. While the climb requires some effort, the panoramic views of limestone islands scattered across the turquoise waters make it one of the most rewarding experiences in the park.
Location: Koh Wua Talap, Mu Ko Ang Thong National Marine Park
Opening hours: 8:00 AM - 5:00 PM daily (park hours)
Entrance fee: 300 THB for foreign adults; 150 THB for children
Best for: Active travellers who want panoramic island views and the classic Ang Thong experience.
Koh Sam Sao
Koh Sam Sao is a smaller island located near Koh Mae Ko, known for its quiet beaches and kayaking stops. The island is a popular stop for kayaking routes and offers a more peaceful side of Ang Thong compared with the park’s main viewpoints. One of its highlights is a natural stone arch extending towards the sea, creating a scenic backdrop for photos and coastal exploration.
Opening hours: 8:00 AM - 5:00 PM daily (park hours)
Entrance fee: 300 THB for foreign adults; 150 THB for children
Best for: Travellers who want quieter beaches, coastal scenery and a more relaxed island experience.
Bua Bok Cave
Bua Bok Cave offers a different perspective of Ang Thong National Marine Park, showcasing the geological features behind its famous limestone landscapes. Located on Koh Wua Talap, the cave contains stalactite and stalagmite formations and requires a short hike through the island’s natural terrain. It is less visited than the famous viewpoints, making it a good option for travellers who want to explore beyond the main highlights.
Location: Koh Wua Talap, Mu Ko Ang Thong National Marine Park
Opening hours: 8:00 AM - 5:00 PM daily (park hours)
Entrance fee: 300 THB for foreign adults; 150 THB for children
Best for: Nature lovers and travellers interested in caves, geology and quieter attractions.
Koh Wua Talap Beach
Located near the national park headquarters, Koh Wua Talap Beach is one of the most popular beach stops in Ang Thong National Marine Park. The white-sand shoreline sits beneath limestone cliffs and tropical greenery, offering a peaceful place to swim, relax and enjoy the scenery after hiking or exploring the islands. The beach is also a starting point for nearby activities, including the famous viewpoint trail and kayaking routes.
Location: Koh Wua Talap, Mu Ko Ang Thong National Marine Park
Opening hours: 8:00 AM – 5:00 PM daily (park hours)
Entrance fee: 300 THB for foreign adults; 150 THB for children
Best for: Travellers who want a relaxing beach break combined with swimming, nature and island exploration.
How to Visit Ang Thong National Marine Park from Koh Samui
The most convenient way to visit Ang Thong National Marine Park is through a full-day organised tour from Koh Samui. Koh Samui is the main departure point, with most tours including hotel pickup, boat transfers, activities and lunch.
Located around 30 km northwest of Koh Samui, Ang Thong can usually be reached by speedboat or larger tour boats. The total experience normally takes a full day, starting in the morning and returning to your hotel in the late afternoon.
Experience | Details |
Departure point | Most tours depart from Nathon Pier, with some operators using other piers depending on the route. |
Travel time by speedboat | Around 45–60 minutes each way |
Travel time by big boat | Around 60-90+ minutes each way, depending on routes |
Total trip duration | Around 8-9 hours including transfers and activities |
Best Time to Visit Ang Thong National Marine Park
The best time to visit Ang Thong National Marine Park is generally during the drier months when sea conditions are calmer and outdoor activities are more comfortable. February to April is often considered one of the best periods, with clearer skies and smoother conditions for boat trips, hiking and kayaking.
Period | What to Expect |
February-April | Calmer seas, clearer skies and ideal conditions for outdoor activities |
May-September | Warm weather with occasional showers; suitable depending on conditions |
October-December | Higher rainfall and more unpredictable sea conditions |
The national park is typically closed from 1 November to 15 December each year during the monsoon period for safety and environmental protection.
The standard National Park entrance fee (300 THB for adults and 150 THB for children) is typically not included in the tour price and must be paid in cash upon arrival, so you should bring enough Thai Baht cash to cover these fees and any extra activities.
Where to Stay for Your Ang Thong National Marine Park Day Trip
After exploring Ang Thong National Marine Park’s limestone islands, viewpoints and coastal landscapes, return to a place designed for relaxation and wellbeing. Set on a hillside in Mae Nam, Mantra Samui Resort offers panoramic ocean views, an adults-only atmosphere and a peaceful setting close to Koh Samui’s beaches, creating the ideal balance between island adventure and personal retreat.
Beyond being a comfortable base for exploring Koh Samui, Mantra Samui is also a wellness destination where guests can slow down through Jai Spa treatments, fitness activities and SAOL Wellness Retreat programmes focused on balance, movement and mindful living. After a day discovering the islands, guests can return to a restorative environment designed to help them relax, recharge and reconnect.
Frequently Asked Questions
How far is Ang Thong National Marine Park from Koh Samui?
Ang Thong National Marine Park is around 30 km northwest of Koh Samui. Since there is no public ferry, most travellers visit as part of a full-day tour. The boat journey usually takes around 30-45 minutes by speedboat or 60-90 minutes by a larger boat, depending on the type of tour you choose.
Is Ang Thong National Marine Park worth visiting from Koh Samui?
Yes, especially if you want to experience a different side of Koh Samui beyond beaches and resorts. A day trip combines limestone islands, the Emerald Lagoon, viewpoints, kayaking, snorkelling and quiet beaches, making it one of the island’s most memorable nature experiences.
What should I bring for an Ang Thong National Marine Park day trip?
You should bring swimwear, sunscreen, sunglasses, a hat, comfortable shoes or sandals for hiking, and a waterproof bag for your phone. It is also a good idea to carry some cash, as the national park entrance fee (300 THB for foreign adults and 150 THB for children) may be charged separately from your tour.
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