Ao Soun Yai Beach
A tranquil beach on Ko Mak island offering calm waters and a laid-back atmosphere away from the crowds.
Details
Tours that include Ao Soun Yai Beach
Guided visits and day-tour combos that include Ao Soun Yai Beach.
Why go, and how to do it well
Ao Soun Yai Beach sits along the shores of Ko Mak, a small island in Trat province that draws travelers seeking a quieter alternative to the busier islands of the Gulf of Thailand. The beach is known for its relaxed pace and relatively uncrowded stretches of sand, making it a natural fit for those looking to unwind rather than sightsee. Its consistently strong visitor ratings reflect a genuine appeal among those who make the effort to reach it.
Visitors can expect a calm, unhurried environment with clear waters suited to swimming and gentle exploration. The surrounding area retains a low-key character, with Ko Mak itself being a small island largely free of the large-scale resort development found elsewhere in the region. The beach offers a sense of seclusion that is increasingly rare in popular Thai coastal destinations.
Practically speaking, Ko Mak is accessible by ferry from the mainland port of Laem Ngop in Trat, and travel times can vary depending on the season and operator. The dry season, roughly November through April, generally offers the most reliable weather and calmest sea conditions for visiting. As with most beaches in this part of Thailand, facilities may be limited, so arriving prepared with sunscreen, water, and any essentials is advisable.
Written by Mac Kiley · Updated Sep 2026
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Best rated within a 11-minute walk
Tours that include Ao Soun Yai Beach
Guided visits and day-tour combos that include Ao Soun Yai Beach.
Around here, on foot
Well-rated places within a short walk of Ao Soun Yai Beach, nearest first. Minutes are at an easy pace in the heat.
- 2 minKoh Mak ResortHotels & Resorts · 160 m · 4.4★
- 2 minI TalayNightlife & Bars · 190 m · 4.4★
- 4 minDayBeds Beach RestaurantRestaurants & Food · 300 m · 4.6★
- 4 minThai SabaiRestaurants & Food · 300 m · 4.4★
- 5 minSeavana Beach Resort Koh MakHotels & Resorts · 360 m · 4.7★
- 10 minBlue pearl barNightlife & Bars · 780 m · 4.5★
Experience hints
Pair your visit. After Ao Soun Yai Beach, round out your day in Koh Chang with contrasting stops nearby.
RFF9+HHJ, Ko Mak, Ko Kut District, Trat 23000, Thailand
Open in Google MapsMore beaches nearby
All within 1.7 km of Ao Soun Yai Beach.

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Tips for Visiting Beaches
Go Early for Empty Sand
Even the busiest beaches are nearly deserted before 9 AM. A sunrise walk is the best hour of the day on the sand, and you'll beat the heat for a morning swim.
Use Reef-Safe Sunscreen
Many Thai marine parks ban chemical sunscreens that damage coral. Bring reef-safe (mineral/zinc-based) sunscreen from home — it's harder to find and pricier in Thailand.
Ao Soun Yai Beach: Frequently Asked Questions
Is Ao Soun Yai Beach worth visiting?
Ao Soun Yai Beach holds a 4.6★ rating from 405 Google reviews, placing it among the highest-rated beaches in Koh Chang.
When is the best time to visit Ao Soun Yai Beach?
The best months to visit Koh Chang are November – March, with the most reliable weather. Crowds peak in December – January — going early in the day usually means fewer people. Months to think twice about: June – September (rough seas, many closures).
Where is Ao Soun Yai Beach located?
Ao Soun Yai Beach is at RFF9+HHJ, Ko Mak, Ko Kut District, Trat 23000, Thailand, in Koh Chang. Getting around Koh Chang: Shared songthaews along the west-coast road; Motorbike rental (฿200–300/day — the hills between beaches are steep, ride carefully).
Also popular in Koh Chang

Noochy Seafood

Khlong Chao Waterfall

Ko Kham

Terraria Bar Koh Mak – Pool Table & Live Music
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