What to Expect on a Pig Island Tour: Koh Madsum Day Guide

The Pigs Are Semi-Wild, Not an Attraction

This is the single most useful thing to know before you land.

The pigs on Koh Madsum are not penned, not trained, not fed on a schedule and not anybody’s pets. They roam the beach and the treeline and they come to the water when boats arrive because boats have historically meant food. They are large animals with their own ideas, and the better operators say so in their listings — one of the private charters carries an explicit warning that a bite would mean a trip to a clinic for rabies shots.

None of which means the island is dangerous. It means you treat the pigs the way you would treat any large unfamiliar animal: keep your distance, do not corner them, do not hand-feed, and do not put a small child between a pig and whatever the pig is walking towards. Photograph them from a metre away rather than a handspan.

They are also, in the honest version, not always doing very much. They come down to the water line and wade about, mostly in the morning. By late afternoon in the heat they are often lying in the shade being pigs. If your mental image is the Bahamas photographs of pigs swimming in deep turquoise water towards a camera, be aware that those were taken somewhere else and that Koh Madsum’s animals spend most of their time in ankle-deep water or on the sand.

How the Pigs Got There

There is no documented answer, and anyone giving you one confidently is repeating a story.

The account you will hear from boat captains, and the one that appears most often in print, is that a local bought a family of underfed pigs on the mainland and released them on the island, where they did what pigs do in a place with no predators and a steady supply of visitors. A variant credits a fisherman who saw the tourism potential. Neither has a primary record behind it. The island has been lightly inhabited and largely undeveloped throughout, and its history is simply not well documented compared with Koh Samui’s bigger neighbours.

Treat it as folklore, enjoy it as folklore, and do not repeat it as fact.

The Money and the Rules Nobody Puts in the Headline

Two things catch nearly everyone out.

The landing fee is 50 baht per person, collected in cash on the beach when you step off the boat. It is not payable by card. Most operators exclude it from the ticket price, which means the trip you booked for $42 is a trip that costs $42 plus small notes you need to have brought with you. A handful of tickets do include it — the sunset and dinner itinerary is one — and it is worth checking the listing rather than assuming either way.

The second is the food rule. Outside food and drink are not allowed ashore on Koh Madsum. That includes the water in your own boat’s ice box, which is stated explicitly on at least one private charter listing. On tours that include a meal, the meal is served on Koh Tan or back on the mainland, never on the pig beach.

The Half of the Trip That Is Not Pigs

Almost nobody sells Koh Madsum on its own, and the reason is that the pig beach is a forty-five minute stop. Paired with it, every itinerary on this site includes Koh Tan — also written Koh Taen — which lies about five kilometres off the southern tip and carries the most accessible coral reef in the area.

Koh Tan is where the snorkelling happens, and for a lot of visitors it is the better half of the day. The reef sits shallow and close to the beach, so it works for people who are not confident swimmers, and mask, fins and life jacket are included on every trip listed here. Visibility swings with the weather and nobody guarantees it. On a bad day the operator will drop the reef stop entirely.

The running order varies and sometimes swaps on the day depending on the tide. Full-day trips give you a long, unstructured afternoon on Koh Tan; half-day trips give you enough to say you snorkelled.

Is It Ethical?

A fair question, and the honest answer is that it depends what you compare it to.

Koh Madsum is not a wildlife encounter and does not claim to be. It is a small population of domestic pigs living free-range on an island, unpenned, with shade, water and a good deal more space than a farm would give them. The 50-baht fee goes towards maintaining the island and the animals on it. There is no riding, no performance, no handling requirement, and nobody makes the pigs do anything.

What is worth resisting is the impulse to feed them. Hand-feeding is what turns a free-roaming animal into one that approaches people expectantly, which is bad for the animal and eventually for the visitor. The food rule that annoys everybody exists partly for this reason.

If animal tourism in Thailand is a live concern for you, the more meaningful test is elsewhere on the combination itineraries: the trips that pair Pig Island with an elephant visit. The two on this site both go to a nursery and clinic project where the visit is feeding and observation, and riding is not offered. That is the distinction to check on any Thai itinerary that mentions elephants.

So Is It Worth It?

If you want a boat trip to two quiet islands with decent shallow snorkelling and an unusual beach at the end of it, yes, comfortably. The combination is good value at the price and the setting does the heavy lifting.

If you are going specifically to swim with pigs in the way the photographs suggest, temper it. You will see pigs, you will get your picture, and it will take about forty-five minutes. The rest of the day is the reef, the boat and the water, and if none of that appeals then the pigs alone are not enough to carry five hours.

Our which Pig Island tour guide sorts the formats by what you actually want out of the day.

Frequently Asked Questions

What is Pig Island’s real name?

Koh Madsum, also written Koh Mudsum or Koh Matsum. It sits off the southern tip of Koh Samui and is small, low and largely undeveloped — one crescent of white sand with a sandbar that appears and disappears with the tide.

How much is the Pig Island entrance fee?

50 baht per person, collected in cash on the beach. It is not payable by card and most operators exclude it from the ticket price, so bring small notes. A few tickets, including the sunset and dinner trip, do cover it.

Can you swim with the pigs?

They wade into the shallows on their own when a boat arrives and you can be in the water near them, but this is not a managed swim-with-animals attraction. Keep your distance, do not hand-feed, and treat them as large semi-wild animals.

Why are there pigs on Koh Madsum?

Nobody knows for certain. The account boat captains give is that a local released a family of underfed pigs on the island and they thrived without predators. There is no primary record for it, so treat it as folklore rather than history.

Can I bring food or drink onto Pig Island?

No. Outside food and drink are not allowed ashore, including the water carried on your own boat. Meals on tours that include one are served on Koh Tan or back on the mainland.

How long do you actually spend with the pigs?

Around forty-five minutes on a half-day trip. Koh Madsum is a stop rather than a destination, which is why essentially every itinerary pairs it with the reef at Koh Tan.

Is Koh Madsum suitable for young children?

Generally yes — the water is shallow and the beach is calm — but several operators set a minimum age of one to four years, and the pigs are large animals that should not be approached closely by small children. Check the specific listing.

What to Expect on a Pig Island Tour