Summarize this page with AI
South of Koh Lanta lies a cluster of islands that make up the classic day trips from the island. Koh Rok and Koh Ha are prized for snorkelling and clear water; Koh Kradan, in neighbouring Trang province, is known for a beautiful white beach. They are among the main reasons visitors leave the beach behind for a day at sea.
What each island offers
- 1Koh Rok: a pair of islands with a bright white beach and coral reef right off the shore, popular for snorkelling. The islands are part of Mu Ko Lanta National Park and are closed seasonally.
- 2Koh Ha: a group of small islands with clear water, sheltered lagoons and rock formations, another favourite snorkel stop.
- 3Koh Kradan: a laid-back island with a long white beach, often the lunch stop on 4-island tours.
- 4The boat ride itself: the journey by speedboat or longtail is part of the experience, with views across the Andaman Sea.
- 5Snorkelling: Koh Rok or Koh Ha?: The two islands offer different experiences in the water. Our comparison looks at which snorkelling tour suits which kind of traveller.
Season, closures and how day trips work
Koh Rok and Koh Ha close to visitors every year from mid-May to November (dates set each year by the park) as part of a national park conservation closure. If snorkelling there is a priority, plan your trip outside this window. During the closure, operators switch to other islands.
Day trips depart from Koh Lanta with hotel pickup, and typically include lunch, snorkelling gear and a boat transfer. Prices, itineraries and inclusions vary, so check details on the booking page. A national park fee may be extra.
Sea conditions can affect schedules even in the open season. Bring reef-safe sunscreen, a hat and a towel, and be prepared to be flexible.
Choose your island by what matters most. For snorkelling, Koh Rok and Koh Ha are the usual picks, but only outside the annual closure. For a beach day, Koh Kradan's white sand is the draw. Read each tour's itinerary carefully, since operators combine islands differently, and pack reef-friendly sunscreen, a dry bag and a towel for the boat ride.
For the full picture, including which islands to pick and what to expect, see our guide to day trips from Koh Lanta.
Day trips to the islands
Snorkeling pickFrom US$47Koh Rok & Koh Haa Snorkel Tour with Lunch Buffet
- 4.7★ from 650 reviews
- Snorkel at Koh Rok and Koh Haa, two of the best reef spots near Koh Lanta, lunch buffet included
Best for: Snorkelers who want the classic Koh Rok / Koh Haa day out
Check availability & price
4-island classicFrom US$424-Island Tour to Koh Kradan with Beach Lunch
- 4.6★ from 467 reviews
- A full day across four islands ending at Koh Kradan, lunch served on the beach
Best for: First-timers who want the archetypal 'Koh Lanta 4 islands' day
Check availability & priceItineraries differ between operators, so confirm which islands are included before booking.
Frequently asked questions
On dates the park sets each year: the published window runs from 16 May to mid-October for most of the small islands and from 1 June to 30 September for Koh Rok, and boats stop in mid-May and restart in November, so confirm with your operator before booking.
Koh Rok and Koh Ha seasonal closureKoh Rok and Koh Ha are the top snorkelling stops. Koh Kradan is more about the beach. Our comparison breaks it down.
Koh Rok vs Koh Ha snorkelling toursA 4-island tour gives variety in one day, while a dedicated snorkelling trip spends longer on the reef. Compare the itineraries.
Best 4-island tours comparedLast updated September 2026.
