Ton Sai Beach

Ton Sai Beach is a sandy beach on the Railay Peninsula in Ao Nang, Mueang Krabi District, Krabi Province, southern Thailand. Enclosed by dramatic limestone karst cliffs, it is accessible only by longtail boat from Ao Nang or Railay due to lack of road access. Notable as a world-renowned rock climbing destination with hundreds of bolted routes, it retains a laid-back backpacker atmosphere with simple bungalows, beach bars and restaurants along its shoreline.

Visitors can expect a narrow sandy beach backed by towering limestone cliffs and jungle, with a relaxed, rustic backpacker setting. The beach is reached only by longtail boat. The shoreline has casual restaurants, bars and low-rise bungalows, while the cliffs offer extensive rock climbing walls. Visitors can swim, walk the beach at low tide to neighboring Railay, kayak, and watch climbers or sunset views over the Andaman Sea.

Ton Sai developed from the late 1980s and 1990s as one of Thailand's earliest and most important rock climbing areas, when climbers established bolted routes on its limestone cliffs. It subsequently grew as a backpacker-oriented beach community adjacent to Railay.