North of Kradan, Koh Ngai (often written Koh Hai) is a forested island with a long beach of soft white sand on its east coast and some of the clearest water in the area. A handful of resorts — from simple bungalows to comfortable hotels — line the beach, and there is easy snorkelling close to shore.
Administratively it belongs to Krabi province, but it sits squarely in the Trang islands and appears on most 4-islands trips as a lunch or swimming stop. For a stay, it is a little more polished than Kradan, with a similar sense of escape.
Top things to do at Koh Ngai (Koh Hai)
Swim off the east beach
Shallow, clear water and soft sand — the island’s main attraction.
Snorkel near the rocks
Ask resorts where the best coral lies close to shore.
Island-hop from Ngai
Longtails from Koh Ngai reach Koh Chueak, Koh Waen, Emerald Cave and Kradan.
How to get to Koh Ngai (Koh Hai)
- From the Trang coast, boats leave Pak Meng pier for Koh Ngai in well under an hour.
- In the high season, island-hopping ferries and speedboats between Koh Lanta and the Trang islands call at Koh Ngai.
Insider tips
- Prices on Koh Ngai are resort prices — budget accordingly.
- Like Kradan, Ngai is quiet in the low season and some resorts close.
Best tours & tickets for Koh Ngai (Koh Hai)
These experiences are the easiest way to see Koh Ngai (Koh Hai):
Island-hopping day trip from €29 From Koh Lanta: Kradan Island Longtail Boat Tour with Lunch
A longtail day that puts Koh Kradan at its centre: snorkelling at Koh Chueak, the Emerald Cave, lunch on Kradan’s beach and a stop on Koh Ngai. It has fewer reviews than the big sellers (4.2 from around thirty), so read the latest ones before booking.
- Snorkelling at Koh Chueak
- Emerald Cave swim and beachfront lunch on Koh Kradan
- Beach time on Koh Ngai
Private boat trip from €247 per group Ko Lanta: Private 4 Islands Tour by Longtail Boat
A private longtail from Koh Lanta for the classic 4-islands route — Koh Chueak, Emerald Cave, Koh Ngai and Koh Waen — priced per boat. With your own boat you can ask to start early to beat the crowds at the cave, or to add time on Kradan; agree any changes with the operator in advance.
- Your own longtail and boatman for the day
- Koh Chueak, Emerald Cave, Koh Ngai and Koh Waen
- Set your own pace and timing at each stop
Island-hopping day trip from €37 4-Island Tour from Koh Lanta to Koh Kradan with Beach Lunch
A full day built around Koh Kradan, rated 4.6 by several hundred travellers: island-hopping and snorkelling through the Trang islands, with lunch on Kradan’s white east beach. A good choice if you want real beach time on Kradan rather than a quick stop.
- Lunch on the beach at Koh Kradan
- Snorkelling and island-hopping in the Trang islands
- Pickup available from many Koh Lanta hotels
