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Recommended
Angthong Marine National Park by Speedboat or Big Boat
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English guided
Free cancellation
Instant confirmation
US$ 29.99
Klook's choice
Tree Bridge Zipline Samui
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English guided
3-5 hrs
Free cancellation
Instant confirmation
US$ 55.49
Angthong National Marine Park Excursion by Big Wooden Teak Boat
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English guided
Free cancellation
Instant confirmation
US$ 20.69
Koh Samui Island Hopping & Snorkeling Tour: Coral and Pig Island
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Hotel pick-up
Private tour
English guided
Free cancellation
Instant confirmation
From
US$ 50.15
Ko Samui Full-Day Angthong Snorkeling & Kayaking Tour
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Hotel pick-up
English guided
Free cancellation
Instant confirmation
US$ 64.29
Koh Tan and Koh Mudsum Day Tour from Koh Samui
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Hotel pick-up
Private tour
English guided
Free cancellation
Instant confirmation
US$ 47.99
Klook's choice
Koh Samui Big Buddha & Wat Plai Laem Half-Day Tour
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English guided
Free cancellation
Instant confirmation
US$ 25.49
Koh Tao Koh Nangyuan and Koh Pha-Ngan from Samui
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English guided
Free cancellation
Instant confirmation
US$ 56.25
Samui Hawk Adventure Zipline Park
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English guided
Morning departure
Up to 3 hrs
Free cancellation
Instant confirmation
US$ 61.49
Koh Samui Koh Nangyuan & Koh Tao Full-Day Snorkeling Tour
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Hotel pick-up
Free cancellation
Instant confirmation
US$ 64.29
Klook's choice
Koh Samui Half-Day City Highlights Tour
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Hotel pick-up
English guided
Free cancellation
Instant confirmation
US$ 32.79
Phuket Old Town Private Full-Day Tour
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Hotel pick-up
Private tour
English guided
Private group
Free cancellation
Instant confirmation
US$ 74.25
ATV Adventure Experience in Koh Samui
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English guided
Free cancellation
Instant confirmation
US$ 55.99
Elephant World Samui Experience
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English guided
Morning departure
3-5 hrs
Free cancellation
Instant confirmation
US$ 59.99
Fall deal
Klook's choice
Ko Samui Pig Island 4-Hour Private Longtail Boat Tour
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Private tour
English guided
Private group
Free cancellation
Instant confirmation
US$ 73.29
Klook's choice
Surat Thani Half-Day 4x4 Jungle Adventure with Lunch
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Small group
Free cancellation
Instant confirmation
US$ 55.70
Samui Elephant Kingdom Experience
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English guided
Free cancellation
Instant confirmation
US$ 28.49
Pig and Tan Island Snorkeling Tour by Speedboat From Koh Samui
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English guided
Morning departure
3-5 hrs
Free cancellation
Instant confirmation
US$ 44.99
Ko Lanta 4 Islands Longtail Boat Tour with Emerald Cave
Hotel pick-up
Private tour
English guided
Free cancellation
Instant confirmation
US$ 34.49
Samui Elephant Home Half Day Caring Experience
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English guided
Morning departure
Up to 3 hrs
Free cancellation
US$ 80.99
Koh Samui Angthong & Koh Wao Yai Full-Day Island Hopping Tour
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English guided
Free cancellation
Instant confirmation
US$ 66.85
Koh Phangan/Koh Samui: Day Tour to Ang Thong with Snorkel & Lunch
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English guided
Free cancellation
Instant confirmation
US$ 79.49
Koh Samui Pig Island & Koh Tan Half-Day Snorkeling Tour
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Hotel pick-up
English guided
Free cancellation
Instant confirmation
US$ 57.20
Ko Samui Half-Day Private 4x4 Jungle Safari Adventure
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Small group
English guided
Free cancellation
Instant confirmation
US$ 233.99
Reviews of Ko Samui activities
Klook User
2026-03-17 01:12:45
Excellent, really worth the money. Breakfast was light but good. They gave out motion sickness pills, but the travel across to the national park was lovely. To be greeted by Dolphins. Our guide, Ken, was brilliant at explaining everything well and keeping us all in line 😂The hike up was quite arduous fabulous views of the surrounding island, that takes one hour. But you can relax on the beach, deckchairs 50 baht for 2 hours and a shop. Next stop the kayaking, it is only 30 mins round to the next beach but it is tiring if you are not a regular kayaker. Finally the emerald lake is very steep steps going up and down, again quite tiring but not as bad as the hike, nice and interesting at the top. There is a shop at the bottom to reward yourself with an ice cream! All the staff are really helpful and you can see they enjoy it. The itinery may change around depending on the weather. The crossing back to Samui was very choppy like a roller coaster but we loved it! All in all a great day
Klook User
2026-04-11 14:29:19
Guide Khun Aoddy is very good care of all the guests, always entertain guests and good knowledge. strongly recommend him to your visiting.
Chang ****************
2026-04-27 13:24:20
導遊：Friendly and attentive
船況：Clean, comfortable and spacious. Complimentary bottle water and soft drink provided
行程安排：First stop was the Pig Island. We stayed for around 2.5hrs on the island. There are a few places where you can buy a coffee/beer, relax and just watch the pigs roam around. Second stop we went snorkelling in the waters outside Koh Tan. The reef and marine life weren’t very impressive but all in all a good day out. Buffet lunch provided at the pier where the tour started.
Delia ***
2026-05-20 23:29:33
We were very well taken care of by the Insea team. The itinerary was planned well and we saw beautiful sceneries. Was able to see some fishes while snorkeling but it's not crystal clear waters full or multicoloured corals (don't expect that). The hike up Oha Jun-Jaras nature trail was no mean feat (500m to the top but you can turn around at the various viewpoints for a similarly breathtaking view) Buffet lunch was alright. Koh Mae Koh was the last stop and it was very beautiful as well. This lookout point is only 150m but the steps are steep.
HU *****
2026-03-01 05:19:28
Because it's a large boat, there are a lot of tourists. If you like to sunbathe, go to the third floor. Most people sit on the second floor; the engine on the first floor is too noisy. The food is good for a day trip. There's cake and coffee in the morning, and the fried chicken actually tastes pretty good for lunch. There are also banana cakes and drinks available in the afternoon, so the food is definitely a plus. A bottle of drinking water is provided for the morning itinerary. Climbing the mountain is not easy; the steps are very large, so be sure to wear comfortable athletic shoes. A large waterproof bag will be provided for the afternoon kayaking, so you don't need to bring your own. Remember to change into your swimsuit and flip-flops. The downside is that the large boat is relatively slow, taking 2 hours each way, and you have to change to a smaller boat to reach the island, which is quite tiring.
wong *******
2026-04-07 11:30:54
This was my first time joining a snorkeling tour. In the morning, a dedicated vehicle picked me up from the hotel, which was convenient and punctual. After arriving at the pier, I registered, put on a wristband, and waited until it was time to board the boat. Before boarding, someone took my picture; if I liked it, I could purchase it upon returning to the pier. During the trip and while snorkeling, I could follow the crew. They helped take underwater photos and would notify us if a sea turtle appeared. Unfortunately, I didn't see any that day, and the underwater coral wasn't as good as I imagined, nor were there many fish, which was a bit disappointing. The hour-plus boat ride out didn't seem entirely worth it. On the way back, the waves were incredibly strong; it felt like a roller coaster for almost two-thirds of the journey. It's best to take motion sickness medication beforehand, just in case. If you feel unwell on the boat, you can tell a crew member, and they will provide a plastic bag.
Klook User
2026-03-09 04:36:28
From the moment we pick up until we go back it was more than perfect time and service.
kym ******
2026-03-12 05:28:17
Had a nice Islqnd Tour all the way around Koh Samui and everything was on par, no delay with pickup and all stops were informative and interesting. The waterfall and elephant interaction on the last stop was the best part for me! The guide tended to waffle on a bit towards the end and we lost time at the temples due to this! Thank You tho i had a great day as this trip i can’t do boat trips so this was a perfect alternative for us!
Aljona ********
2026-06-18 12:00:36
Evenings, we still sit there and just say: Wow! That was by far the coolest adventure and the highlight of our vacation.
The quad tour was simply incredible – through water, up and down the mountains, with beautiful views. Everything was explained perfectly, and we felt safe the entire time.
But the best part was the guides, especially Kodi. So friendly, attentive, and motivating! They always made sure no one was left behind. I was really scared of the zipline, but Kodi encouraged me the whole time and told me I could do it. Luckily, I listened to him – it was one of the highlights of the day!
It was also great that the guides took our phone and took photos and videos during the tour. Now we have incredibly beautiful memories of that day.
Many thanks to Kodi and the entire team. You made this excursion unforgettable. Absolutely recommended – our best day on Koh Samui! 🌴🛵⛰️📸✨❤️
Ko Samui at a glance
What to know before visiting Ko Samui
Top experiences overview
Koh Samui’s most-booked things to do are island tours, followed by outdoor and water-based activities, and a steady trickle of spa and cruise options. Demand builds through the early year, peaks around March, then eases into a quieter late-year period.
Activities by traveller type
Families will find island tours and gentle water activities the most convenient choices, with easy-to-join options that suit mixed ages. Couples often favour the outdoor and sports activities plus cruises for more scenic, romantic outings. Solo travellers and small groups can mix and match outdoor activities and water-based experiences for flexible, adventure-focused days.
What travellers book ahead
Most visitors retain flexibility — typical bookings are made a couple of days before activities — but the earliest planners book around four days ahead. Booking a little earlier matters most in the busy March period, when demand is noticeably higher.
Comparing categories: price and who they suit
Water activities are the easiest way in, typically the cheapest entry point, while tours sit toward the higher end of the typical price spread. Cruises show the widest range of options and prices, making them suitable for both budget-minded travellers and those seeking premium experiences. Outdoor and sports activities and massages fall into mid-range territory and appeal to active visitors or anyone after relaxation without premium pricing.
FAQs about Ko Samui
What are the most popular things to do in Koh Samui?
What are the most popular things to do in Koh Samui?
How much do activities in Koh Samui cost?
How much do activities in Koh Samui cost?
Which activities are the cheapest, and which are the most expensive in Koh Samui?
Which activities are the cheapest, and which are the most expensive in Koh Samui?
How far ahead should I book activities in Koh Samui?
How far ahead should I book activities in Koh Samui?
When are activities busiest, and when is it quieter in Koh Samui?
When are activities busiest, and when is it quieter in Koh Samui?