Koh Kradan is a long, narrow island in Thailand's Trang Province, in the Andaman Sea, and it routinely appears on lists of the world's best beaches. There are no roads on the island. No ATMs. No stores worth mentioning. The ferry cannot approach the beach directly, so you arrive by longtail boat, suitcase balanced across the bow, wading the last few metres through knee-high water to the sand. None of this is inconvenient. All of it is the point.
Koh Kradan sits in Trang Province, on Thailand's west coast about midway between Krabi and the Malaysian border. Fly from Bangkok to Trang Airport (about an hour on AirAsia or Nok Air) and arrange a transfer to the Pak Meng or Kuangtung Pier, from where the ferry departs. The ferry journey to Koh Kradan takes about 45 minutes on the Tigerline service. The entire journey from Bangkok — including transfer and ferry — can be done in half a day if you leave early.
Alternatively, Koh Kradan can be reached as part of a Trang island-hopping route, typically going Koh Ngai → Koh Mook → Koh Kradan → Koh Libong. The islands are close enough that daily longtail transfers between them are practical and inexpensive. If you're coming from Koh Lanta (in Krabi Province to the north), the Tigerline ferry also connects. Book the ferry ahead during peak season (December–February) — seats sell out regularly.
"The island is long and narrow, and the beach runs its entire east coast. When you step off the longtail and into that water — clear, warm, and impossibly shallow for hundreds of metres — you understand immediately why people who discover this place talk about it the way they do."
The east coast beach at low tide — shallow water stretching for 100 metres · The exposed sandbar at the island's southern tip
The east coast beach is what brings everyone here: a long, powder-soft stretch of white sand facing a shallow lagoon of improbably clear Andaman water. At low tide, the water retreats dramatically, leaving a vast expanse of warm shallows — knee-depth for what feels like an impossible distance from the shore. At the southern end of the island, a sandbar emerges completely at low tide, and watching the sunset from it, standing ankle-deep with limestone karsts silhouetted on the horizon, is the specific Koh Kradan experience that most people are trying to describe when they run out of superlatives.
Between 10 AM and 2 PM, day-trip boats arrive and the beach can feel crowded relative to what the rest of the day offers. Staying overnight is the correct choice — not because the island has much nightlife (it doesn't, and that's exactly right), but because the early morning and late afternoon light, with the day-trippers gone, is when Koh Kradan is most fully itself. Guests who stay the night typically find themselves walking the empty beach by 7 AM in absolute quiet, with the Andaman Sea flat and glassy and the day's heat not yet arrived.
The snorkelling directly off the east coast beach is accessible from the shore — the reef begins within swimming distance. The coral has suffered some bleaching but the fish population remains excellent: parrotfish, clownfish, moray eels, reef sharks in the shallower sections. Bring water shoes — sea urchins are present in numbers along the reef edge. The hotels loan snorkel equipment; the Reef Resort provides it free to guests.
Koh Mook's famous Morakot Cave (Emerald Cave) is directly across a short stretch of water from Koh Kradan — a 30-minute longtail ride. The cave can only be accessed at certain tide windows, requiring a 80-metre swim through a dark sea tunnel before you emerge into a completely enclosed hidden lagoon with a secret white sand beach, surrounded by towering limestone cliffs. The turquoise-green water gives the cave its name. It sounds theatrical. It delivers.
The crucial caveat: go very early. The cave receives significant day-trip traffic between 10 AM and 2 PM, and the difference between arriving at 8 AM (when it's nearly empty and the light through the tunnel entrance is at its best) and arriving at noon (with fifty other swimmers) is the difference between magic and a queue. From Koh Kradan, arranging an early departure from your hotel is straightforward — most hotels organise the longtail. The ride over before the crowds and back before the heat is one of the cleanest day itineraries in the Trang islands.
The sea tunnel entrance to Morakot Cave at low tide · The hidden lagoon and beach revealed inside the cliff
Everything on Koh Kradan is expensive relative to mainland Thailand, because everything — food, water, building materials — arrives by boat. Accept this before you arrive and the prices become simply what things cost on an island paradise rather than a grievance. The Reef Resort is the most established option, with a swimming pool, reliable snorkel and SUP equipment included, and staff that are consistently excellent. Kradan Beach Resort is a step cheaper with similarly good beachfront positioning. For something more ecological and quiet, Kalumé offers boutique bamboo accommodation and an excellent Italian restaurant that constitutes most of the island's fine dining.
One practical note: electricity on the island operates on a generator system, and some accommodations only run air-conditioning during specified hours — typically evening through morning. Confirm this when you book if you need it. There are no ATMs anywhere on the island; most hotels accept card payment and will allow cash withdrawals for a fee. Bring more cash than you think you'll need as a backup.
"The island goes quiet by 10 PM. There are no bars, barely any nightlife — just the sound of the Andaman Sea and whatever you brought to read. This is not a deficiency. It is, specifically, what makes it worth coming here."
Snorkelling the east coast reef · The jungle path to Sunset Beach on the island's western face