Pig Island is the nickname for Koh Madsum, a small island off Samui's north-east coast where friendly pigs wander the shore and come to meet visiting boats. The usual tour pairs it with Koh Tan (also written Koh Taen), a low, green island with a long beach and a fringing reef that suits first-time snorkellers. The version linked here is a guided speedboat trip from Samui with a pink dolphin spotting element, a stop at both islands and time in the water, collecting you from your hotel and returning you in the afternoon. It is shorter and cheaper than the major island day trips, which makes it the easy choice on a weather-affected day, with young children or when you want a half-day outing. The pigs are the novelty, the reef is the real draw, and wildlife sightings are never guaranteed.
Treat the pigs with sense. They are semi-wild, they come for food, and they can be boisterous, so follow your guide's instructions about what and whether to feed them and keep small children close. Wear shoes on the beach landing if the sand is hot, and never leave bags unattended. Koh Tan's reef is shallow and easy, with plenty of small fish, but visibility varies with the tide and weather, so manage expectations on murky days. Dolphin spotting depends on luck and conditions; operators can point you in the right direction but cannot promise a sighting.
Boat type matters here too. Speedboats are quick and usually carry a manageable group, longtail boats are slower and more charming, and the private versions let you choose your pace. The crossing is short and mostly sheltered, but the wet season from October to December can still bring chop and the odd cancellation, so choose free cancellation. Remember sun protection, a hat and plenty of water, because there is little shade on the beaches.
Pig Island works especially well as a half-day add-on to a beach holiday, either in the morning before the sun is high or later, depending on the departure. It also makes a good rest-day alternative after a big trip like Ang Thong. Families with children aged around four and up enjoy it, couples can book a private longtail, and anyone wanting a photogenic, low-effort day on the water will be happy.
What to expect
The experience
A guided speedboat trip from Samui to Koh Madsum (Pig Island) and Koh Tan, with snorkelling, beach time and a pink dolphin spotting leg.
Best time
Calm, clear mornings in the dry season give the best water and the quietest beaches.
How long
Roughly four to five hours including pickup and return.
Tips
Follow your guide's rules on feeding the pigs, wear sun protection, bring a towel and a dry bag and expect little shade.
Quick picks
- Best for
- Families and first-time snorkellers wanting a short, fun boat trip.
- Families
- One of the best family outings on the island, with short crossings and gentle snorkelling.
- Couples
- Book a private longtail for a slower, quieter version.
- Pair with
- A beach afternoon or a Big Buddha and temples tour.
- Time needed
- Half a day.
Good questions
Can I feed the pigs?+
Only as your guide directs. Food is often provided or advised, but the pigs can be pushy, so keep children close.
Will I see pink dolphins?+
They are possible but never guaranteed. Operators aim for known areas, and sightings depend on the day.
Is it suitable for young children?+
Generally yes for children who are comfortable on boats, with life jackets provided. Very small children may find the speedboat bumpy.
How is it different from the Koh Tao trip?+
It is shorter, closer and cheaper, with calmer water and simpler snorkelling. Koh Tao has bigger reefs and the Nang Yuan sandbar.
What if the weather is bad?+
Operators may cancel or reroute for safety. Free-cancellation options protect your booking, especially from October to December.