Koh Chang: 3 or 4 Islands Snorkel & Beach Tour by Big Boat

Koh Chang’s best swimming and snorkeling lies offshore, and this big-boat day trip gives you a comfortable way to reach it without arranging several boats yourself. You can choose a shorter 3-island route or spend longer at Koh Rang National Marine Park on the 4-island option.

I like the generous time in the water and the freshly prepared Thai lunch, which is better than the usual bare-bones boat meal. The crew also takes underwater photos at no extra charge. The main catch is that the ride can get bumpy, and some departures feel crowded when the sea is rough.

Key things to know before you book

• Two routes suit different energy levels: The 3-island tour runs from 10:30 AM to 4 PM, while the 4-island version runs from 9:30 AM to 4:30 PM.
• The 4-island route reaches Koh Rang National Marine Park: You get three snorkeling stops and one white-sand beach break.
• Hotel pickup is limited to west-coast resorts: Transfers reach as far north as White Sand Beach, but not Koh Chang’s north or east side.
• Lunch is served on board: Expect chicken-based Thai food, fruit, water, and coffee. Request a vegetarian meal at least one day ahead.
• Underwater photography is included: Tell the guide clearly that you want photos, since the photographer may not reach everyone.
• The 4-island fee is extra: Bring 200 baht per adult or 100 baht for children aged 5 to 9.

Choosing between the 3-island and 4-island routes

The 3-island tour is the better fit if you want a shorter outing or are traveling with children who may tire after several hours on the water. It visits Koh Wai, Koh Lao Ya Nai, and Koh Klum, roughly 40 minutes from the pier.

You get two snorkeling stops, with the option to swim toward shore, plus a one-hour beach stop. There is also a chance to try simple open-sea fishing, which has proved a hit with children. The route gives you a good taste of the islands without committing to a full day under the sun.

The 4-island tour is aimed more squarely at snorkelers. The boat travels about 1.5 hours from the pier to the Koh Rang area, then visits Koh Rang, Koh Yak Yai, Koh Mapring, and Koh Yak Lek. Technically, this means one larger island and three smaller islets, all close together inside Koh Rang National Marine Park.

The longer trip includes three snorkeling stops of about 40 minutes each and a one-hour beach break. You will pay an additional national park fee, but this route gives you more time in the water and better access to the marine park’s coral areas.

One practical note: the 4-island tour takes most of the day, but the islands are close together once you arrive. If you prefer long quiet stretches between stops, you may find the schedule rather active. If your main goal is snorkeling, that close spacing works in your favor.

Starting at Bang Bao Pier

If you arrange your own transport, the meeting point is at Bang Bao Pier. You should arrive by 10 AM for the 3-island departure, or follow the specific meeting instructions supplied for your selected option.

The walk from the parking area to the boat can be longer than expected, so do not arrive at the last minute. Parking is available at the meeting point, though a fee of about 70 baht may apply if you bring your own car or motorbike.

The pickup system is useful but not fancy. Shared cars collect passengers from west-coast hotels between about 9 and 9:50 AM for the 3-island trip, and between 8 and 8:50 AM for the 4-island trip. The road transfer can feel cramped, and parts of the ride are bumpy, but the convenience is worth it if you are staying near the main west-coast beaches.

If your hotel is on the north or east side of Koh Chang, book the version without transfers and arrange your own ride to Bang Bao. Do not assume the shared vehicle will cross the island for you.

Life aboard the big boat

The boat is one of the strongest parts of this outing. It offers more room than the small speedboats commonly used for island trips, with seating in both sun and shade, a toilet, and space to move around between stops.

That size also makes the ride less frantic. You are not constantly climbing in and out of a narrow speedboat, and there is room to sit during the longer crossing. On calm days, the journey out gives you pleasant views of Koh Chang’s coast and the smaller islands.

The tradeoff is speed. A big boat takes longer to reach the outer islands, especially on the 4-island route. When waves rise, the boat can still pitch and roll, and one passenger described the motion as strong enough to make seasickness medication worthwhile. If you are prone to motion sickness, take suitable precautions before departure and keep your eyes on the horizon.

The boat has covered areas, but you should still pack sunscreen, sunglasses, and a towel. You will spend a great deal of time exposed to sun reflected from the water, even when the day feels breezy.

The 4-island snorkeling stops

The 4-island route follows a simple rhythm: swim, return to the boat, eat or rest, then swim again. Each water stop lasts about 40 minutes, which is enough time to see fish and coral without leaving you in the water until you are chilled or tired.

Koh Yak Lek

Koh Yak Lek is one of the first snorkeling points. You can swim and use the supplied mask and life jacket, with crew members nearby to help direct you toward better areas.

This stop works well for first-time snorkelers because the crew can point out fish and underwater features. Non-swimmers are not left to fend for themselves, though you should tell the staff clearly if you need extra help.

Koh Mapring

Koh Mapring brings another 40-minute swim. The sites around these islets can look similar at first, with warm clear water, coral, and schools of small fish, but changes in light, depth, and current make each stop feel a little different.

Do not expect a major reef expedition. If you have snorkeled in famous coral areas elsewhere in Thailand, you may find the coral colors modest. The appeal here is the combination of fish, clear water, easy access, and several chances to get in.

Koh Rang and the beach break

Koh Rang gives you a longer one-hour pause for swimming and free time. This is the route’s most scenic beach stop, with white sand and clear water that invite a proper swim rather than a quick photo stop.

The beach is also helpful for families and nervous swimmers. You can build confidence close to shore before returning to open-water snorkeling. Bring water shoes if you plan to walk on the beach or shallow seabed, since hot sand and rough surfaces can make bare feet uncomfortable.

Getting ashore can depend on the pontoon and sea conditions. If the floating walkway does not reach the sand, some people may prefer to stay aboard rather than wade through deeper water.

Koh Yak Yai

Koh Yak Yai is another 40-minute snorkeling stop. Guides may swim down to point out fish and other sea life, which adds value if you are not sure where to look.

The water is usually the star here rather than a dramatic island visit. You will have a clear chance to swim, observe fish, and practice with the mask. Fins are not included, so confident swimmers may miss the extra push they provide. The supplied mask and life jacket are included, but pack your own fins if you have them and if the operator permits their use.

The 3-island route: shorter, easier, and still worthwhile

The 3-island route visits Koh Wai, Koh Lao Ya Nai, and Koh Klum. It is not simply a shortened version of the longer outing. The half-day timing makes it useful for families, casual snorkelers, or anyone who wants time back on Koh Chang in the late afternoon.

At Koh Wai and the other snorkeling areas, you can swim from the boat and may be able to reach shore. Koh Lao Ya Nai includes a one-hour beach and swimming stop, giving the trip a slower pause between the water sessions.

The route also includes the chance to try fishing with a hand line in open water. It is basic rather than a serious fishing trip, but children often enjoy the novelty. If your group includes mixed ages or mixed swimming ability, this route gives everyone something to do.

The 3-island option does not carry the 200-baht national park charge. At $28 per person, that makes it particularly good value for a half-day outing with transport, equipment, lunch, fruit, and a guide included.

Lunch, fruit, and the photo service

Lunch is served on the boat and is chicken-based unless you request a vegetarian meal at least one day before departure. The food is described as basic Thai cooking, but the portions and freshness make it more than a token meal.

Fruit such as watermelon and pineapple arrives later, along with drinking water and coffee. You can also buy extras such as beer, soft drinks, snacks, and noodles on board, so carry some cash if you want more than the included food and drink.

The underwater photographer is a useful extra. You may get candid boat photos and pictures while snorkeling, with no separate photography charge mentioned. Still, take the initiative: tell the guide or photographer that you want your photo taken. Do not assume every passenger will be approached.

The photos are a nice record of the day, but they should not be your only reason to book. The quality and number of images can vary, and the main value remains the boat access, swimming time, and organized transport.

Is the $28 price good value?

At $28, this is a strong deal for a full package. The price includes west-coast hotel transfers, a guide, boat transport, snorkeling mask, life jacket, toilet access, lunch, fruit, water, coffee, and underwater photography.

The 3-island tour offers especially good value because it avoids the national park charge. For the 4-island route, add 200 baht per adult or 100 baht for a child aged 5 to 9. Keep that money ready, since the fee is collected separately.

You are paying for a shared group experience, not a private boat. The boat can feel crowded, and the transfer vehicle may be packed. Still, the larger boat provides more space than a small speedboat, and the price is far below what a private charter would cost.

Who will enjoy this most?

I would choose this trip if you want several chances to snorkel without organizing local boats yourself. It also suits families, especially on the 3-island route, because the schedule includes a beach stop, food, shade, and staff who can assist less confident swimmers.

It is a good choice for mixed groups. Strong swimmers can spend time over the reef, while non-swimmers can remain aboard, swim near shore, or enjoy the scenery. The crew has helped nervous swimmers in the water, but you should still speak up about your comfort level.

You may want a different kind of outing if you dislike group tours, need a quiet beach day, or are looking for advanced snorkeling with dramatic coral color. Some reef sections may look modest compared with top snorkel sites elsewhere, and the islands are close together on the 4-island route.

The tour is not suitable for children under 2, pregnant women, people with back problems, or wheelchair users. The boat, pier walk, transfers, and sea movement can be demanding.

Practical tips for a smoother day

Bring swimwear, towel, sunscreen, sunglasses, snacks, and cash. Water shoes are useful for hot sand and rough ground at beach stops.

Arrive early if meeting at Bang Bao Pier. The walk to the dock takes time, and a late arrival can be treated as a no-show after the driver waits only a few minutes.

Weather matters. Rain can arrive quickly, particularly in monsoon season, and sea conditions may change the schedule. If the operator decides conditions are unsafe, the trip can be canceled, rescheduled, or refunded.

If you need vegetarian food, give notice one day ahead. If you are concerned about motion sickness, prepare before boarding rather than waiting until the boat is already rolling.

Should you book this Koh Chang boat tour?

Book it if you want good-value access to offshore islands, several organized swims, and a proper lunch without paying private-boat prices. I would pick the 3-island version for a shorter family outing and the 4-island version if snorkeling is the main reason you came.

Skip it if you need a private, quiet experience or expect spectacular coral on every stop. For most people who want a practical day on the water, though, the combination of helpful staff, spacious boat, warm swimming water, beach time, and included food makes this one of Koh Chang’s more sensible excursions.

FAQ

How much does the Koh Chang snorkel tour cost?

The tour costs $28 per person. The 4-island option also requires a national park fee of 200 baht per adult or 100 baht per child aged 5 to 9.

What is the difference between the 3-island and 4-island tours?

The 3-island tour runs from 10:30 AM to 4 PM and visits Koh Wai, Koh Lao Ya Nai, and Koh Klum. The 4-island tour runs from 9:30 AM to 4:30 PM and visits Koh Rang, Koh Yak Yai, Koh Mapring, and Koh Yak Lek, with three snorkeling stops in Koh Rang National Marine Park.

Is hotel pickup included?

Pickup and drop-off are available from hotels on the west side of Koh Chang, up to White Sand Beach. Hotels on the north or east side are not covered, so you need to arrange transport to Bang Bao Pier.

What food and drinks are included?

The tour includes a basic chicken-based Thai lunch, fruit, water, and coffee. Vegetarian meals are possible if requested at least one day before the tour.

Are snorkeling masks and life jackets provided?

Yes. A snorkeling mask and life jacket are included. Fins are not listed as part of the included equipment.

Are underwater photos included?

Yes, an underwater photographer is included. Tell the guide or photographer directly that you want photos, since not every passenger may be approached automatically.

Do I need to bring cash?

Yes. Bring cash for the 4-island national park fee, possible parking costs, and optional purchases such as beer, soft drinks, snacks, or noodles.

Can non-swimmers join the tour?

Non-swimmers can come along, stay aboard, or use the beach stops, and crew members may assist in the water. The tour is not suitable for wheelchair users, people with back problems, pregnant women, or children under 2.

What happens if the weather is unsafe?

Schedules may change because of weather and sea conditions. If conditions are unsafe, the tour can be canceled, rescheduled, or fully refunded.