Ao Suan Yai

Ao Suan Yai is the longest beach on Koh Mak island in Ko Kut District, Trat Province, eastern Thailand. Located on the northwest coast of the island, it stretches for approximately 3 kilometers with white sand, clear shallow water and a palm-lined shoreline. The beach is known for its tranquil atmosphere, sunset views and low-rise resorts, and is a central area for swimming and leisure on Koh Mak.

Visitors can expect a long, wide sandy beach with calm, clear and shallow water suitable for wading and swimming. The shoreline is lined with coconut palms and scattered resorts, restaurants and bars. The beach faces west, offering open sunset views over the Gulf of Thailand and nearby islands. The environment is quiet and low-density compared to mainland beaches, with areas for walking along the sand, sunbathing and kayaking. No large commercial developments or nightlife venues are present.