Four main tours stand out on Koh Madsum, each offering distinct island experiences. I love the Secret Islands Boat Trip (6 hours) because it packs the most value, combining Koh Madsum and Koh Taen with snorkeling and mangrove exploration. The Private Longtail Boat Tour earns my recommendation for its intimate 5-hour format with generous time splits between islands – perfect for folks who prefer a relaxed pace.
For wildlife enthusiasts, the Full Day Catamaran Tour hits all the right notes, featuring dolphin watching and the famous Pig Island encounters. The 5-hour Private Koh Madsum & Koh Tan Tour works well for travelers wanting to call their own shots with flexible scheduling and activities.
Let’s look at our favorite island tours in detail.
Key Points
- Koh Madsum and Koh Tan are the main islands visited in the best tours, offering snorkeling, beach relaxation, and mangrove forest exploration.
- Private longtail boat tours provide a personalized experience, allowing visitors to customize their activities and duration on the islands.
- Catamaran tours offer unique experiences like dolphin spotting and visiting Pig Island, showcasing the natural wonders and wildlife of the region.
- Small-group and private tours are available, catering to different traveler preferences and group sizes.
- The tours generally include hotel pickup/drop-off, traditional Thai lunch, and necessary equipment, ensuring a hassle-free and enjoyable experience.
KOH SAMUI TOURS – SECRET ISLANDS BOAT TRIP

Offering a unique opportunity to explore the secluded islands off the coast of Koh Samui, the “Koh Samui Tours – Secret Islands Boat Trip” provides a captivating day-long adventure.
Priced at £63.04 per person, this small-group tour takes guests on a 6-hour journey across the clear waters of the Gulf of Thailand.
Highlights include visiting the picturesque Koh Madsum and Koh Taen, where travelers can enjoy swimming, snorkeling, and mangrove forest exploration.
The tour includes convenient hotel pickup and drop-off, a traditional Thai lunch, and all necessary equipment.
With free cancellation up to 24 hours in advance, this tour offers a flexible and immersive way to discover the hidden gems of Koh Samui’s surrounding islands.
Read our full review: KOH SAMUI TOURS – SECRET ISLANDS BOAT TRIP Review
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Private Longtail Boat Tour to Koh Madsum and Koh Tan

A captivating private longtail boat tour provides the opportunity to explore the enchanting islands of Koh Madsum and Koh Tan.
This 5-hour excursion allows visitors to spend 2 hours on each island, engaging in activities like snorkeling, sailing, and relaxing on pristine beaches. Discover the captivating coral reefs and breathtaking island vistas.
The tour includes a private longtail boat, snorkeling equipment, life jackets, and a knowledgeable guide. Participants should bring essentials like a hat, swimwear, and sunscreen.
Though not suitable for certain travelers, the tour has received positive reviews highlighting the great experiences and skilled boat operators.
Read our full review: Private Longtail Boat Tour to Koh Madsum and Koh Tan Review
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Koh Samui: Full Day Tour by Catamaran

An exhilarating Koh Samui full-day excursion by catamaran takes travelers on a captivating journey to explore the island’s diverse attractions.
This 5.5-hour tour allows guests to spot playful dolphins, snorkel in vibrant coral reefs, and visit the iconic Pig Island.
Priced at $81.42 per person, the tour has earned a solid 4.0-star rating from 3 reviews.
With a focus on showcasing the region’s natural wonders, this high-speed catamaran tour offers an unparalleled opportunity to take in Koh Samui’s stunning beauty and unique wildlife in a single day.
Read our full review: Koh Samui: Full Day Tour by Catamaran Review
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Ko Samui: Private Koh Madsum & Koh Tan by Longtail Boat Tour

Why not explore the picturesque islands of Koh Madsum and Koh Tan on a private longtail boat tour from Koh Samui? This 5-hour trip allows you to customize your experience and visit both islands at your own pace.
Snorkel the crystal-clear waters, relax on the white sand beaches of Pig Island, and discover the stunning coral reefs of Koh Tan. With a private group of up to 3 people, this tour is priced from $170.11, making it an affordable option for small parties.
Ranked highly for its popularity, customer ratings, and performance, this is an excellent way to learn about the natural beauty of these Thai islands.
Read our full review: Ko Samui: Private Koh Madsum & Koh Tan by Longtail Boat Tour Review
Book now: Check availability
Frequently Asked Questions
Do the Tours Include Transportation to and From the Hotels?
The tours usually include transportation to and from hotels, providing a convenient and seamless experience for travelers. However, it’s best to confirm the specific inclusions with the tour operator when booking to ensure all your needs are met.
Are the Tours Suitable for Families With Young Children?
The tours are generally suitable for families with young children. Many offer kid-friendly activities and accommodations, and provide transportation to and from the hotels. However, it’s best to check with the tour operator for specific details on their family-friendly offerings.
What Is the Maximum Group Size for the Private Boat Tours?
The maximum group size for private boat tours varies, but typically ranges from 2 to 12 people. The exact group size depends on the specific tour operator and the size of the boat used for the excursion.
Can We Customize the Itinerary or Activities During the Tours?
You can customize the itinerary and activities during the private boat tours. Operators are typically flexible and willing to accommodate your preferences, allowing you to tailor the experience to your interests and needs.
Are There Any Age or Fitness Requirements to Participate in the Tours?
Most tours don’t have age or fitness requirements, but some activities may have restrictions. It’s best to check with the tour operator about any specific needs or limitations to ensure the tour is suitable for all participants.
Recap
Koh Madsum and Koh Tan offer visitors a chance to explore two of Koh Samui’s most secluded and picturesque islands. With a range of tour options available, travelers can choose between private longtail boat trips or full-day catamaran excursions to these stunning destinations. Regardless of the tour chosen, visitors can expect to enjoy pristine beaches, snorkeling opportunities, and a peaceful escape from the crowds.
