The Gulf islands run on a season of their own, roughly the reverse of the Andaman coast, and Koh Samui is the natural base for exploring the cluster: an international airport, comfortable resorts, and two smaller islands within easy ferry reach for anyone who wants to add diving, a quieter beach or both. Five days lets you split the time between Samui itself, a day on Koh Phangan, and a day on Koh Tao, before winding back down for a last slow morning on the sand. Our Koh Samui guide is a good starting point, and ferries to the islands explains how the boats between the three connect.
Itinerary at a glance
| Day | Base | The signature experience |
|---|---|---|
| 1 | Koh Samui north and east | A night market on the fisherman’s village street |
| 2 | Koh Samui interior | Na Muang waterfalls and a south coast viewpoint |
| 3 | Koh Phangan (day trip) | The island’s quieter west and north coasts |
| 4 | Koh Tao (day trip) | Snorkelling or a discover scuba dive |
| 5 | Koh Samui | A slow, facility-free beach and sunset |
Day 1: Koh Samui north and east
Chaweng and Lamai, on the east coast, are Samui’s main strips, long stretches of sand backed by restaurants, bars and shops, and a reasonable place to base yourself if you want things within walking distance (see where to stay in Koh Samui for how the other coasts compare). For dinner, though, head to Bophut on the north coast and its fisherman’s village, a row of old wooden shophouses turned into restaurants and small galleries along a single walking street that runs a lively night market on set evenings.
Break up the beach time with a look at the Big Buddha temple on its own small island connected by a causeway, and the grandmother and grandfather rocks near Lamai, a pair of naturally weathered rock formations that have become one of the island’s more talked-about curiosities. Coconuts turn up in everything here, since the island itself is covered in palms, from the drinks to the desserts to more than a few savoury dishes.
Food: a night market on the fisherman’s village street in Bophut, grilled seafood and noodle stalls side by side.
The signature experience: an evening wander along Bophut’s fisherman’s village, old wooden shophouses lit up after dark.
Optional tour: the Big Buddha temple makes an easy stop on the way to or from Bophut, worth ten minutes even outside the market evenings.
Day 2: Koh Samui interior
Most visitors never leave the coast road, which means the island’s interior stays relatively quiet. Head inland to the Na Muang waterfalls, a two-tier set of falls reachable by a short walk from the car park, with a pool at the base that is cool even on the hottest days. The ring road’s southern stretch has a handful of viewpoints looking back down over the coast and out to sea, worth the stop even for a few minutes.
A coconut plantation along the same route gives a sense of how much of the island’s economy still runs on the trees themselves, and a hillside restaurant overlooking the bay is a good place to slow down for a long lunch before heading back to the coast for the afternoon.
Food: a hillside restaurant with a bay view, a good change of pace from the beachfront places.
The signature experience: the cool pool at the base of Na Muang falls after a short forest walk.
Optional tour: a half-day 4x4 or scooter loop of the interior covers the falls, the viewpoints and the plantation in one run if you would rather not backtrack.
Day 3: Koh Phangan
Koh Phangan is a short ferry across from Samui, and most first-time visitors arrive expecting only the full moon party, which is a specific date and turns the island into a different place entirely for that one week. Outside that window, Phangan is quieter and greener than Samui, with a west and north coast that get a fraction of the crowds.
Bottle Beach, on the island’s north side, is reachable either by a longtail boat around the coast or by a genuinely hard walk over the headland, and it rewards either option with one of the more secluded beaches in the Gulf. Spend the day moving between a couple of these quieter bays rather than trying to see the whole island in one visit, and head back to Samui on the last ferry.
Food: a beach shack lunch on one of the north coast bays, simple and usually good.
The signature experience: a quiet bay on Phangan’s west or north coast, a different island entirely from its party reputation.
Optional tour: Bottle Beach by longtail is the easier route; the overland walk is for anyone who wants to earn the view.
Day 4: Koh Tao
A second ferry ride, further out, brings you to Koh Tao, the smallest of the three and the one built almost entirely around the water. The island is known internationally for its dive certification courses, and a huge number of divers get their first open water qualification here, but you do not need to be certified to get in the water: a discover scuba dive, a single supervised dive with an instructor, is open to complete beginners.
Snorkelling straight off several of the island’s beaches is good enough that a boat is not strictly necessary, though a boat trip out to Koh Nang Yuan, three small islets joined by sandbars, adds the single most photographed sight in the Gulf. At low tide the sandbars connect all three islands into one walkable strip of white sand with clear water on both sides.
Food: a beachfront cafe on Koh Tao, good for a lunch break between water sessions.
The signature experience: Koh Nang Yuan’s sandbars, walkable between three islands when the tide allows, with a viewpoint climb above for the full picture.
Optional tour: a discover scuba dive for non-divers, or the open water certification course for anyone with a few extra days to spare on a future trip.
Day 5: Rest and sea
After two days of island hopping, give the last full day back to Samui and to doing nothing in particular. A long, slow morning with no boat to catch, a swim without a schedule, and an afternoon on a beach with no facilities at all, just sand, sea and shade, is the right way to close out a trip built mostly around movement. Jellyfish seasons and rip currents are real on these coasts at certain times of year, so follow the local flag system on any beach you are not familiar with.
Finish at a west coast bar for sunset, the Gulf side of the island facing the right direction for it, and let the evening run long. Five days across Samui, Phangan and Tao covers the Gulf side properly without ever feeling rushed between islands.
Food: a west coast bar or restaurant for a final sunset dinner, table right on the sand at most of them.
The signature experience: an entire day with no ferry to catch, the first genuinely unhurried stretch of the trip.
Optional tour: a final massage or spa session is an easy way to fill an otherwise open afternoon.
Before you go
The Gulf islands are wettest late in the year, which is exactly when the Andaman coast on the other side of the country is at its best, so check the best time to visit carefully if your dates are flexible. Ferries between Samui, Phangan and Tao run to their own schedules and can be affected by rough seas, so build in some slack around each crossing rather than booking a tight connection. Bring a dry bag for anything you do not want soaked on the open-deck ferries, and if diving is on the cards, sort your certification paperwork before you leave home to save time on the island itself.