
A small jungle-covered island with one long white beach, shallow turquoise water and coral you can reach straight from the sand.
Why Koh Ngai? A small jungle-covered island with one long white beach, shallow turquoise water and coral you can reach straight from the sand.
Koh Ngai, also written Koh Hai, is one of the most relaxed islands in the Trang archipelago: a hilly, forested island with a single long beach of soft white sand on its east coast and warm, shallow water that turns every shade of turquoise. There are no roads, no villages to speak of and only a handful of resorts, which is exactly why couples and families with young children love it.
Two or three nights is ideal. Use one day for a four-island longtail tour to the Emerald Cave and Koh Kradan, and spend the rest snorkelling straight off the beach, reading in the shade and watching the limestone karsts change colour at dusk.
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The gateway is Trang, which has an airport with daily flights from Bangkok of about 1.5 hours. From Trang town it is roughly an hour by minivan or taxi to Pak Meng pier, where longtails and speedboats cross to Koh Ngai in about 30-45 minutes; many resorts arrange the full transfer. In high season island-hopping speedboats also link Koh Ngai with Koh Lanta, Koh Mook, Koh Kradan and Koh Lipe. There are no roads on the island, so you walk along the beach or use your resort's boat. Allow roughly two to three hours from landing in Trang to feet in the sand.
Almost everything happens along the east-coast beach, a narrow strip of fine sand backed by jungle and lined with a small number of resorts, from simple bungalows to comfortable beachfront villas. The water here is shallow and usually calm from November to April, which makes it safe for children. Each resort has its own restaurant and beach area, so choose one you like - you will spend most of your time there. Views across to Koh Mook and the limestone islets are superb at sunrise.
Coral starts just off the beach, especially towards the southern end, with parrotfish, giant clams and the occasional turtle. The classic day out is the four-island tour: snorkelling at Koh Chueak and Koh Waen, swimming into the Emerald Cave on Koh Mook and lunch on the white sand of Koh Kradan. Tours are easy to book at your resort, or charter a private longtail to set your own pace. Go early to beat the crowds at the cave, and bring reef-safe sunscreen and water shoes.
Dining is limited to the resort restaurants, which serve southern Thai curries, fried rice, fresh fish and Western comfort food at island prices. There is no shop street and no ATM, so bring enough cash from Trang. Many resorts also offer barbecue nights on the beach in high season. Evenings are quiet: a cocktail on the sand, a massage, stars overhead and an early night. If you want bars and live music, Koh Lanta or Koh Lipe is a better base, but for peace this is hard to beat.
Visit between November and April for calm seas, clear water and the full island-hopping boat network. From May to October the southwest monsoon brings rain and waves to the Andaman coast; some resorts close, visibility drops and the Emerald Cave can be inaccessible on rough days. The shoulder months of May and October can still be lovely, with lower prices and fewer people, but keep your plans flexible in case boats are cancelled. December to February usually brings the driest, sunniest weather of all.
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All hotels in Koh Ngai →2-3 nights to snorkel off the beach, join a four-island tour and simply do nothing in a hammock.
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