Krabi Island Hopping: Ao Nang, Railay and the Phi Phi Routes
Krabi island hopping works because of the geology. The Andaman coast here is a drowned karst landscape: vertical limestone towers rising straight out of green water, with sandbars and lagoons tucked behind them, and the best of it sits within about 40 minutes of the beach at Ao Nang. That concentration is the whole argument for basing yourself on the mainland rather than on an island. From one hotel room you can reach a dozen islands, a tidal lagoon, a hot spring in the jungle and a temple on a staircase of more than a thousand steps. This guide covers the routes, the season that makes or breaks them, and the boats.
The other thing worth knowing early: Railay, the peninsula that everyone photographs, is not an island but is cut off from the mainland by cliffs. You reach it by longtail boat, in about ten minutes from Ao Nang, and that boat is the only way in. Pack accordingly.
Why Krabi Works as a Base
Ao Nang is the practical centre. It is a beach road of hotels, restaurants, dive shops and tour desks, about 40 minutes by road from Krabi airport. It has the widest choice of accommodation and the most departure points for boats. Railay, just around the headland, is quieter and prettier, with three beaches, a lagoon hidden in the interior and a rock-climbing scene that draws people for weeks. Krabi town, 20 minutes inland, is a working town with a good night market and the cheapest rooms, and it is where the long-distance buses and the river piers are.
Because the islands sit close in, most trips leave in the morning and return in the late afternoon. That means you are not committing to a change of hotel every night, which is the single biggest advantage over the island-hopping routes on the Gulf side of Thailand.
Krabi Island Hopping Routes Compared
The four islands tour is the standard first day: Koh Poda, Koh Tup, Koh Mor and the Phra Nang cave beach, all within a short hop of Railay. Koh Tup’s sandbar appears at low tide and lets you walk between islands, which is the photograph everyone brings home. The Hong Islands, a little further out, centre on a lagoon enclosed by cliffs that you enter through a narrow passage at the right state of tide, and the group is a national park with a fee.
| Route | Travel time from Ao Nang | Highlights | Best for |
|---|---|---|---|
| Four islands | 15 to 25 minutes | Phra Nang cave, the walking sandbar, snorkelling | A first day, families, half-day options |
| Hong Islands | 30 to 45 minutes | Enclosed lagoon, viewing point, quiet beaches | Photographers and quieter groups |
| Phi Phi Islands | About 1 hour by speedboat | Maya Bay, Pileh lagoon, Bamboo island | A full day; go early to beat the boats |
| Koh Lanta | 1 to 2 hours by ferry | Old town, long beaches, national park | An overnight or a longer stay |
| Emerald Pool and Hot Springs | About 1 hour by road | Forest pool, thermal cascade | A rainy day or a rest day |
The Phi Phi day trip is the one people argue about. The islands are genuinely spectacular, Maya Bay has been closed and reopened under a managed-visitor regime after the damage of the late 2010s, and the mid-morning arrival of dozens of boats is real. If you go, take the earliest speedboat and accept that the afternoon belongs to everyone else. Better still, give Phi Phi two nights of its own and swim in the lagoon in the evening. Koh Lanta, south of Krabi, is the gentler option, with an old town of wooden stilt houses and long empty beaches.
Best Season
The Andaman coast runs on the monsoon. High season is roughly November to April, when the sea is flat, the visibility is best and the limestone looks the way it does on the postcards. From May into October the south-west monsoon brings swell, rain and reduced visibility, and several operators stop running the outer routes entirely, though the sheltered inner islands often remain accessible. Shoulder periods in late October and late April can be excellent value if you accept some weather risk. Water temperature sits around 28 to 30 degrees year round.
Neighbouring Sights
Beyond the water, the province has a good day’s worth of inland content. The Tiger Cave Temple, Wat Tham Suea, has a staircase of more than a thousand steps to a summit platform with a view across the plain and a large Buddha. The Emerald Pool and the Blue Pool in the Khao Phra Bang Khram reserve are reached by boardwalk through forest, and the hot spring waterfall nearby is warm enough to sit in. Khao Phanom Bencha National Park has waterfalls and some of the province’s best forest. South, Trang province is the gateway to a quieter island group with a very different tempo.
Further out, Krabi connects easily to Phuket by road and ferry, around two to three hours depending on the combination, and to Koh Lanta by ferry in season. Koh Phi Phi itself has a pier serving both directions.
Logistics
Krabi airport is about 15 kilometres from Krabi town and roughly 40 minutes from Ao Nang, with direct flights from Bangkok and seasonal services from Singapore, Kuala Lumpur and elsewhere. Airport transfers by shared minivan are cheap and widely sold; private taxis cost more and take the same time. From Phuket, road transfers take about two and a half to three hours. The main piers are Nopparat Thara, west of Ao Nang, for the longtails and the in-season ferries, and Klong Jilad, near Krabi town, for the larger ferries to Phi Phi and Lanta.
Longtail boats can be chartered privately from the beach at Ao Nang and Railay; agree the route, the duration and the price before you board, in writing if you can, and pay on return. National park entry fees apply at several of the islands and are usually collected at the landing point or included in a tour price, so check which it is. Bring cash, reef-safe sunscreen, a dry bag and water shoes for the rocky landings.
Frequently Asked Questions
Which is better as a base, Ao Nang or Railay?
Ao Nang for choice, transport and nightlife; Railay for quiet, scenery and climbing. They are ten minutes apart by boat, so you can easily visit one from the other.
How many days do you need?
Four nights gives you three day trips: the four islands, Hong or Phi Phi, and an inland day. Two nights only really allows one boat day.
Is the Phi Phi day trip worth it?
Yes if you take the earliest boat and accept the crowds by late morning. If you can spare two nights, staying on Phi Phi is far better.
What happens in the monsoon season?
Swell and rain from May into October, with some outer routes suspended. Prices drop sharply and the inner islands often remain reachable on calm days.
Do I need to book boats in advance?
In high season, yes for the popular routes, a day or two ahead. In low season you can usually negotiate at the beach the evening before.
For a wider Thailand route, pair Krabi with Phuket and Chiang Mai, and readers building a longer Asian itinerary often continue to Hanoi and Ho Chi Minh City. The karst scenery is worth comparing against Ha Long Bay in Vietnam, and if you want a very different island base see Bondi Beach and Abu Dhabi. For mountain contrast, our Mount Fuji guide sits at the other end of the scale. More regional planning in Travel Guides and Transport Accommodation.