Almost all Thai sea kayaking happens inside two internationally listed wetlands: Phang Nga Bay, Ramsar Site 1185, 40,000 hectares and 42 islands, and the Krabi Estuary, Ramsar Site 1100, 21,299 hectares. The thing you are paying for is the hong — a lagoon inside a hollow limestone island, entered through a tunnel that is only open at the right state of tide. Two operators publish prices: 3,950 baht for John Gray’s Hong by Starlight, park fees included, and 4,850 baht a head for a Paddle Asia day tour, park fees not mentioned. The season is the Andaman’s calm half, mid-October to mid-February. And the risk is not the paddling — it is the boat that carries you out and the rainy-season current.
Where the paddling is
| Area | Where | Status | What you are paddling in |
|---|---|---|---|
| Phang Nga Bay | Phang Nga, reached from Phuket or Ao Luek | Ramsar Site 1185, designated 14 August 2002 - 40,000 ha | 42 islands, at least 28 mangrove species, seagrass and coral. The hong caves are inside the limestone stacks. |
| Krabi Estuary and Ao Thalane | Krabi | Ramsar Site 1100, designated 5 July 2001 - 21,299 ha | Mangrove channels and canyon walls, some 221 bird species, mudflats out to about 2 km at low tide. |
| Cheow Lan reservoir | Surat Thani, inside Khao Sok | Man-made lake behind EGAT's Rajjaprabha Dam | Flatwater between karst towers. EGAT records over 150,000 visitors a year and a 300-tonne fishery. |
Phang Nga Bay was listed under the Ramsar Convention on 14 August 2002 as Site 1185, covering 40,000 hectares of shallow bay and 42 islands. The Ramsar record describes shallow marine waters and intertidal forested wetlands with at least 28 species of mangrove, plus seagrass beds and coral reefs. It carries 88 bird species, notably threatened plovers and dowitchers, along with 82 fish, 18 reptiles, three amphibians and 17 mammal species including dugong, white-handed gibbon, serow and black finless porpoise. Communities in the bay fish and harvest nypa palm fronds for thatch, and the record notes archaeological sites with paintings more than a thousand years old — which you paddle directly beneath on some routes.
The Krabi Estuary was listed on 5 July 2001 as Site 1100, covering 21,299 hectares of sand beach, mangrove and mudflat with steep wooded cliffs, extensive seagrass at Sriboya Island, and some 221 bird species in the mangrove zones. The mudflats extend about two kilometres offshore at low tide, which is the single most useful sentence on this page for anyone planning a Krabi paddle: at the bottom of the tide, a lot of what looks like water on a map is not.
The hongs, and why the tide is the whole trip
A hong is a room. In Phang Nga and Krabi it means a lagoon open to the sky inside an island — a cave system whose roof collapsed, leaving a walled garden of mangrove and rock reachable only through a tunnel at sea level. That tunnel is the reason sea kayaking exists here as a distinct activity rather than a beach rental: a longtail cannot fit, a swimmer cannot cover the distance, and at high water the tunnel is under the sea while at the lowest water it can be dry rock.
This is why trip times look arbitrary and are not. When an operator moves a departure by two hours between one week and the next, it is following the tide, not the timetable. It is also the fair test of an operator: one that can tell you which hongs are open on your date, and why, is reading a tide table. One that quotes the same schedule year-round is selling you a boat ride.
What it costs, from the operators that publish
Most Thai kayak operators quote by enquiry. Comparing the ones that publish is the only honest price guidance available, so here is exactly what each states on its own site, read 7 September 2026.
| Operator | Base | Published price | What it says is included |
|---|---|---|---|
| John Gray's Sea Canoe | Ao Por, Thalang, Phuket | Hong by Starlight 3,950 THB; private charter 62,750 THB | National park fees and hotel transfers stated as included. Operating since 1983. |
| Paddle Asia | Phuket Town | Phang Nga day tour 4,850 THB per person, 2-person minimum | Transfers included; no accommodation on day trips; park fees not mentioned. Prices stated as not contractual. |
| Sea Kayak Krabi | Ao Thalane and Koh Hong, Krabi | Not published | States 30 years of operation and Department of Tourism certification. Quote by enquiry only. |
Paddle Asia also publishes multi-day trips — twin share at 11,500 baht for two days, 15,600 for three, 19,650 for four, 23,800 for five and 28,900 for six; kayaking and camping at 8,500 for two days and 12,800 for three; solo rates from 13,500 for two days, with a 1,500-baht-per-night single supplement and children under 12 at half price. Its page states plainly that the prices and information are not contractual.
Is the national park entry fee inside the price, or collected at the gate? John Gray’s says included. Paddle Asia’s price page does not mention park fees at all. Sea Kayak Krabi publishes no prices. Phang Nga Bay and the Krabi islands sit inside national parks, and the foreigner rate is not small — the four-band schedule and the higher named-gate rates are in our national parks guide. Ask, and get the answer in writing.
The season, and the risk that is not the paddling
The government portal, citing the Meteorological Department, sets the frame: summer mid-February to mid-May, the rainy season mid-May to mid-October under the southwest monsoon, and winter mid-October to mid-February under the northeast monsoon. Nearly all Thai sea kayaking is on the Andaman side, where the northeast monsoon months are the calm ones. That is the same calendar the regatta season runs on, for the same reason.
The FCDO’s Thailand advice covers the actual hazards better than any operator page. Three points, in its own terms:
- Currents. Take care swimming, diving, kayaking or white water rafting in rivers or close to waterfalls, particularly in the rainy season — currents can be extremely strong.
- The boat, not the kayak. Passenger boats between the mainland and islands can sink or collide, and British nationals have died. The causes named include overloading, poor maintenance and rough seas, particularly during monsoon season. Most Phang Nga day trips are a mother ship plus kayaks, so this is your risk, not somebody else’s.
- Jellyfish. They come close to shore particularly in the rainy season from May to October, and stings can be fatal.
None of that argues against going. It argues for asking what the support boat is, how many people will be on it, and what happens if the weather turns — and for treating a monsoon-month discount as the price of a real difference in conditions rather than a bargain.
Guiding, and running a business on the water
Paddling is fine on a tourist entry. Being paid to lead people is not, and the barrier is higher than a work permit. Guide work is item 22 on the Ministry of Labour’s 2020 list of 27 occupations foreigners are prohibited from doing in Thailand, published on the Royal Thai Government portal — a prohibition on the occupation, not a licence you apply for. Working for pay without a valid permit or outside what a permit allows carries a fine of 5,000 to 50,000 baht, deportation and a two-year bar on obtaining a permit.
There is a second, separate hurdle for the business itself. Sea Kayak Krabi states on its own site that it holds Department of Tourism certification, which points at a licensing regime for tour operators — but we could not source that regime to an official Thai instrument today, so we are not describing how it works. Two hurdles, both real, one of which we can cite. Start at work permits in Thailand and take Thai legal advice. BAANLYY is a listing portal, not a law firm.
What we could not confirm
- National park entry fees at the Phang Nga and Krabi gates, re-verified this week. dnp.go.th refused automated retrieval throughout 7 September 2026. Our national parks guide carries the schedule from an earlier direct read; we are pointing there rather than restating figures we could not check today.
- Cheow Lan’s surface area, capacity and the dam’s completion date. EGAT’s own environmental page publishes the fishery and visitor figures but none of these, and we did not take them from elsewhere.
- Bioluminescence in Phang Nga Bay. John Gray’s markets its evening trip around it. We found no scientific or government source characterising it — where it occurs, in which months, or how reliably — so treat it as the operator’s claim, not a forecast.
- Any official Thai guidance on kayaking safety, equipment or leader qualifications. The FCDO advice above is a foreign government’s. We found no Thai equivalent.
- Sea Kayak Krabi’s Department of Tourism certification and its 30 years of operation. Both are the operator’s own claims on its own site. We could not independently verify either.
- A published Andaman kayaking season. The Meteorological Department gives national monsoon dates. It does not publish a paddling window, so the November-to-April figure you see quoted everywhere is convention, not an official number.
Frequently asked questions
Two Ramsar-listed wetlands hold most of it. Phang Nga Bay is Ramsar Site 1185, designated 14 August 2002 and covering 40,000 hectares: a shallow bay of 42 islands with at least 28 mangrove species, seagrass beds and coral reefs, supporting 88 bird species, 82 fish, 18 reptiles and 17 mammals including dugong and black finless porpoise. The Krabi Estuary is Ramsar Site 1100, designated 5 July 2001 and covering 21,299 hectares of sand beach, mangrove and mudflat under steep wooded cliffs, with some 221 bird species. What makes the paddling unusual is not the water but the rock: the limestone stacks are hollow, and a hong is a collapsed cave roof that leaves an open lagoon inside an island, reachable only by a low tunnel at the right state of tide. You cannot walk in, you cannot motor in, and at the wrong tide you cannot get in at all.
Only some operators publish, and the ones that do are the ones to compare. John Gray's Sea Canoe publishes its Hong by Starlight trip at 3,950 baht, with a private charter of the same trip at 62,750 baht, departing from Ao Por in Thalang, Phuket, and states that national park fees and round-trip hotel transfers are included. Paddle Asia publishes a Phang Nga Bay day tour at 4,850 baht per person with a two-person minimum, multi-day twin-share trips from 11,500 baht for two days up to 28,900 for six, and kayaking-and-camping from 8,500 baht, with children under 12 at half price and hotel transfers included — while noting that its prices and information are not contractual and that no accommodation is included on one-day trips and no breakfast on the first day. Sea Kayak Krabi publishes no prices at all and quotes by enquiry. The number worth asking about before you book is whether the national park entry fee is inside the price or collected at the gate, because the difference is real and only one of the three states it plainly.
The government portal, citing the Meteorological Department, gives the frame: summer runs mid-February to mid-May, the rainy season mid-May to mid-October when the southwest monsoon covers Thailand, and winter mid-October to mid-February under the northeast monsoon. On the Andaman side, which is where nearly all of the sea kayaking is, the northeast monsoon months are the calm ones and the southwest monsoon months are the rough ones. That is why the Andaman paddling calendar and the Andaman sailing calendar look identical. What the Meteorological Department does not publish, in anything we could find, is a stated Andaman kayaking or boating season, so treat any crisp November-to-April window you see quoted as a convention rather than an official figure.
The honest answer is that the paddling itself is usually gentle and the risk sits around it. The FCDO's Thailand advice makes three points that apply directly. First, on inland and near-shore water: take care swimming, diving, kayaking or white water rafting in rivers or close to waterfalls, particularly in the rainy season, because currents can be extremely strong. Second, on the boats that carry you and the kayaks out to the bay: passenger boats between the mainland and islands can sink or collide, with overloading, poor maintenance and rough seas during monsoon season among the causes named, and British nationals have died. Third, jellyfish come close to shore, particularly in the rainy season from May to October, and stings can be fatal. None of that is a reason not to go. It is a reason to ask what the mother ship is, how many people are on it and what the plan is if the weather turns, and to take the monsoon months seriously rather than treating them as a discount.
Guiding, no. Guide work is item 22 on the Ministry of Labour's 2020 list of 27 occupations foreigners are prohibited from doing in Thailand, published on the Royal Thai Government portal — a prohibition on the occupation rather than a permit you can apply for. Any work for pay without a valid permit, or outside what a permit allows, carries a fine of 5,000 to 50,000 baht plus deportation and a two-year bar on obtaining a permit. Foreigners do own and run water-sports businesses here, on a properly structured company with permits for the roles they actually hold, and Sea Kayak Krabi's own site points at the other half of the picture by claiming Department of Tourism certification for the business itself. We could not source that licensing regime to an official Thai instrument, so we are not describing how it works — only noting that the business licence and the guide prohibition are two separate hurdles, and both are real. Take Thai legal advice; BAANLYY is a listing portal, not a law firm.
No, and it is worth separating them because they get sold together. Cheow Lan is a reservoir behind EGAT's Rajjaprabha Dam inside Khao Sok in Surat Thani — flatwater between limestone towers, with no tide, no swell and no hongs. EGAT's own environmental page records the reservoir supporting a fishery of roughly 300 tonnes a year and drawing over 150,000 visitors annually. It is a beautiful paddle and an easy one, and it is the right answer for a first-timer or a family. It is not the bay. What EGAT does not publish on that page, and what we therefore are not stating, is the reservoir's surface area, its capacity or the dam's completion date.
Related guides
- Phuket — the departure point for most of the bay, as a place to live.
- Krabi — Ao Thalane, the estuary and the cheaper side of the same limestone.
- National parks — the entry fees you will meet at the gate.
- Scuba diving and snorkelling — the same coast, underneath.
- Sailing and the regattas — the same monsoon calendar, bigger boats.
- Rock climbing — the outside of the islands you paddle into.
- Trekking — the same karst on foot.
- Explore Thailand — the section this guide sits in.
Twenty minutes from the water changes how often you go
Ao Por and Thalang for the bay, Ao Nang and Nong Thale for Ao Thalane. The launch you can reach on a weekday evening is the one you will actually use.
Sources & References
- Ramsar Sites Information Service — Pang Nga Bay Marine National Park, Ramsar Site 1185, designated 14 August 2002, 40,000 hectares: a shallow bay of 42 islands with at least 28 mangrove species, seagrass beds and coral reefs, 88 bird species, 82 fish, 18 reptiles and 17 mammals including dugong and black finless porpoise, plus rock paintings more than a thousand years old
- Ramsar Sites Information Service — Krabi Estuary, Ramsar Site 1100, designated 5 July 2001, 21,299 hectares of sand beach, mangrove and mudflat with steep wooded cliffs, seagrass beds at Sriboya Island, some 221 bird species, and intertidal mudflats extending about 2 km offshore at low tide
- John Gray's Sea Canoe — the operator's own site: operating since 1983, departing from 80/25-28 Moo 6, Ao Por, Pa Klok, Thalang, Phuket, with Hong by Starlight published at 3,950 baht, a private charter of the same trip at 62,750 baht, and national park fees and hotel transfers stated as included
- Paddle Asia — the operator's own price list: a Phang Nga Bay day tour at 4,850 baht per person with a two-person minimum, multi-day twin-share tours from 11,500 baht for two days to 28,900 for six, kayaking-and-camping from 8,500 baht, children under 12 at half price, complimentary hotel transfers, no accommodation on one-day trips, and the note that prices and information are not contractual
- Sea Kayak Krabi — the operator's own site, giving Ao Thalane and Koh Hong as its paddling areas and stating 30 years of operation and Department of Tourism certification. No prices are published on the site
- Royal Thai Government portal, citing the Meteorological Department — Thailand's three seasons: summer mid-February to mid-May, the rainy season mid-May to mid-October when the southwest monsoon covers Thailand, and winter mid-October to mid-February under the northeast monsoon
- UK Foreign, Commonwealth and Development Office travel advice for Thailand — take care when swimming, diving, kayaking or white water rafting in rivers or close to waterfalls, particularly in the rainy season, because currents can be extremely strong; passenger boats between the mainland and islands can sink or collide, with overloading, poor maintenance and rough seas during monsoon season among the causes; and jellyfish come close to shore particularly in the rainy season from May to October, with stings that can be fatal
- Royal Thai Government portal — the Ministry of Labour's 2020 announcement of work prohibited to foreigners. Item 22 of the 27 listed is guide work
- Royal Thai Government portal — working without a permit, or outside what a permit allows, carries a fine of 5,000 to 50,000 baht plus deportation and a two-year bar on obtaining a work permit
- Electricity Generating Authority of Thailand — Rajjaprabha Dam social and environmental management: the reservoir supports a fishery of roughly 300 tonnes a year and draws over 150,000 visitors annually. EGAT does not publish the reservoir's surface area or the dam's completion date on this page
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.
