Mu Ko Phai (or Koh Pai) is a small uninhabited archipelago belonging to the Eastern Seaboard Islands of Thailand. The largest island is Ko Phai, located about 21 Km to the west of Pattaya. The name Ko Phai means "Bamboo Island", in Thai. This island is located at the South East end of the Bay of Bangkok, on the eastern side of the Gulf of Siam. Administratively Ko Phai belongs to the Amphoe Bang Lamung, Chonburi Province.
Ko Phai is almost 4 Km in length and its maximum width is about 1.5 Km. It is a quite craggy wooded island and a great part of its coast is formed by rocky cliffs. The whole island is high, but its highest point is only 150m and there is not a single peak dominating above the others. There is a light house on the summit of the island.
The closest land to the Ko Phai group is Ko Lan, located about 14 Km to the east of Ko Phai's eastern shore. These islands can be reached in about 2 hours by boat from Southern Pattaya harbor. The rental rate depends on the size of the boat and the destination. All these islands are a protected natural area under the supervision of the Royal Thai Navy. Visitors ought to bring their own food and water and they are not allowed to stay overnight on Mu Ko Phai.
Beach Scenery Adjacent islands