What the market offers
Phuket is the hub, with marinas on the east coast holding the largest charter fleet in Southeast Asia: sailing catamarans, motor yachts from forty feet to superyacht scale, and traditional-styled cruisers built for the day trade. Charters divide into day trips, typically Phang Nga Bay, Koh Yao, Racha or Coral Island, and multi-day itineraries that reach further: the Similan and Surin islands to the northwest, or south through Koh Lanta toward Koh Rok and Koh Ha. Koh Samui runs a smaller Gulf-side scene with its own fleet and the Ang Thong marine park as the headline day trip.
Day charters and what they cost
Day rates depend on vessel class, season and whether the boat comes through an agent or direct. The bands below are for high season with crew, fuel for a standard itinerary, and light catering; national park fees, premium catering and alcohol are usually added.
| Vessel class | Typical day rate | Suits |
|---|---|---|
| Speedboat, private | ฿30,000 to ฿80,000 | Island hopping, small groups |
| Sailing catamaran 40 to 50 ft | ฿60,000 to ฿150,000 | Families, relaxed pace |
| Motor yacht 50 to 80 ft | ฿150,000 to ฿400,000 | Comfort, shorter range |
| Large motor yacht 80 ft plus | ฿400,000 to ฿1M and up | Events, larger parties |
Multi-day itineraries and seasonality
The Andaman has a hard seasonal split. High season runs roughly November through April: calm seas, clear water, and the full map open. The Similan and Surin islands, the best diving and clearest water in Thailand, are closed entirely for roughly half the year, typically mid-May to mid-October, and are only sensibly visited on liveaboard or multi-day charters within their open window. In the green season the west coast gets swell and storms; charters still run, but itineraries compress toward the sheltered limestone of Phang Nga Bay and the east side of Phuket.
A classic week runs from Phuket into Phang Nga Bay for two nights among the karsts, down to Koh Lanta and Koh Rok, and back via Racha, with the Similans substituted in season. Crewed multi-day charter typically prices from ฿150,000 to ฿500,000 per night for quality motor yachts, with sailing catamarans well below that and true superyachts well above. December holidays and Chinese New Year book out months ahead.
National park rules are enforced more seriously than they once were: mooring restrictions, drone permits, fishing bans and daily visitor caps at some sites. A professional crew handles this invisibly; a cheap charter that ignores it can end a day at the wrong dock.
The honesty about exclusivity
Foreigners cannot own Thai land, and islands are land; there is no lawful route to buying a Thai private island, whatever a listing may imply, and long leases over island land carry the same structural limits as any Thai leasehold, which our property briefings cover. Nor can you rent the famous sights to yourself: Maya Bay, James Bond Island and the marquee anchorages are shared, managed public places, and midday in high season they are crowded. What money genuinely buys is timing and access: a crew that anchors off the right beach at seven in the morning before the day boats arrive, quiet bays that the tour routes skip, and the ability to move when a crowd does.
Resorts that sell true privacy
The closest thing to a private island in Thailand is a resort buyout. A handful of properties occupy their island or a private peninsula essentially alone, and several will sell exclusive use: the whole property, its staff, boats and beaches, for a family gathering or event. Buyouts of small ultra-luxury island properties typically start in the low millions of baht per night and require months of lead time, but they deliver what the charter market cannot: a controlled shoreline with no other guests on it. For shorter privacy, many top coastal resorts sell private beach dinners, day-use islands and yacht-plus-villa combinations that come close at a fraction of the cost.
Chartering well
The variables that decide a charter are unglamorous: the actual condition of the boat, the crew's English and judgement, the catering, and whether the itinerary was designed around tides, crowds and the season or copied from a leaflet. AGP works with a vetted set of owners, captains and buyout properties on both coasts, matches the vessel to the party rather than the budget to the brochure, and manages the whole arrangement, provisioning, permits, transfers and the fallback plan, so the week on the water feels effortless because the work happened beforehand.
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This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.
Where a conversation helps.
Briefings generalise; your situation will not. We work with a limited number of private partners, and if any of the above touches a decision you are actually making, we would be glad to consider it with you, privately and without obligation.
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