12 Best Day Trips from Koh Samui (2026 Guide)

Overview

The best day trips from Koh Samui fall into three groups: boat trips to nearby islands, land tours into the interior, and one overnight exception (Khao Sok). Best overall is Ang Thong Marine Park — 42 limestone islands, a viewpoint hike, and kayaking, from ~1,200 THB (~34 USD). Best for families is Pig Island (Koh Madsum) combined with Koh Tan, a short speedboat hop from Thong Krut Pier. Best for snorkeling is the Koh Tao and Koh Nang Yuan full-day run, with the clearest water of any trip on this list.

Samui sits at the center of the Gulf of Thailand’s island cluster, so most of these trips run 4 to 12 hours round-trip by speedboat, big boat, or minivan, with hotel pickup included on nearly every organized tour. This guide compares all 12 by duration, price, departure pier and who they suit, then breaks each one down with the numbers you need to book — see our island hopping guide for a wider comparison of crossing times and prices across all 8 nearby islands.

Key takeaways

• Ang Thong Marine Park is the signature Samui day trip: big boats from ~1,200 THB (~34 USD), speedboats ~1,700-2,800 THB, plus a 300 THB (~8.50 USD) national park fee not always included.
• You cannot visit Ang Thong, Pig Island or Koh Tao independently without a boat — there is no public ferry, so a tour or private charter is mandatory.
• Koh Phangan is the only “day trip” reachable on a scheduled public ferry (130-400 THB one way) without booking a tour.
• Full Moon Party trips run overnight; 2026 party dates include 26 Sep, 27 Oct, 24 Nov, 24 Dec and 31 Dec.
• Nov-Dec monsoon swells cause the most cancellations of the year — build a buffer day into your itinerary if you’re chasing a specific tour.

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Day Trips from Koh Samui at a Glance

Twelve day trips cover boats, jungle, temples and one overnight exception — compare duration, price and departure point before you book.

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1. Ang Thong Marine Park

Ang Thong National Marine Park is a chain of 42 limestone islands about 32 km northwest of Koh Samui, and the most popular organized day trip on the island. Big boat tours cost from 1,200 THB (~34 USD) adult / 800 THB (~23 USD) child for a roughly 9-hour trip carrying 50-70 passengers; speedboat tours in smaller groups of 8-15 run 1,700-2,850 THB (~49-81 USD). The 300 THB (~8.50 USD) national park entrance fee (150 THB for children), set by the Department of National Parks (DNP), is charged separately by some operators and bundled by others — confirm before booking.

Every tour includes a stop at Wua Talap, the park’s main island, for the 500-step climb to the Ang Thong Wua Talap viewpoint overlooking the islands, and most add kayaking or a boat ride to the Emerald Lake (Thale Nai), a saltwater lagoon inside a collapsed limestone dome. For a slower, more active version, Blue Stars Kayaking runs a dedicated kayak-and-snorkel tour from 2,800 THB (~80 USD) per person with two paddling sessions and hotel transfers included.

Boats depart Nathon or Bang Rak pier with most tours also offering hotel pickup across the island. Bring reef shoes for the viewpoint climb and motion sickness tablets — the Gulf crossing can be choppy outside the December-February dry season. For a full breakdown of tour operators, boat types and our worth-it verdict, see our dedicated Ang Thong Marine Park guide.

2. Pig Island (Koh Madsum) and Koh Tan

Pig Island — officially Koh Madsum — is a small islet south of Koh Samui best known for the semi-wild pigs that swim out to greet arriving boats, usually paired with a stop at neighboring Koh Tan for snorkeling and lunch. Speedboat tours from Thong Krut Pier start around 1,150-1,350 THB (~33-39 USD) per adult in a shared group; slower longtail-boat versions run 1,400-1,650 THB (~40-47 USD) and suit families better than speedboats. Private charters cost from about 4,500 THB (~129 USD) for a small group. A separate island entry fee of roughly 50 THB (~1.50 USD) per adult applies on top of the tour price, with children usually free.

The crossing from Thong Krut takes 10-15 minutes by speedboat or about 30 minutes by longtail. Most operators include snorkeling gear, life jackets and a simple lunch; some feeding of the pigs is included, though welfare groups have raised concerns about crowding and feeding practices — choose an operator that limits group size and doesn’t let visitors swim directly with the animals. Our Pig Island and Koh Tan guide covers the animal-welfare question and operator comparison in more depth.

3. Koh Tao and Koh Nang Yuan

Koh Tao and the adjoining Koh Nang Yuan — three islets joined by a sandbar — offer the clearest water and best snorkeling of any Samui day trip, roughly 90 minutes away by speedboat. Full-day tours cost 1,800-2,850 THB (~51-81 USD) per adult, 1,550 THB (~44 USD) for children, and run as a long 12-hour door-to-door day: pickup around 06:00-06:30, return 18:00-18:30. The Koh Nang Yuan island admission of about 250 THB (~7 USD) is sometimes excluded from the tour price — check before booking.

Tours typically include a light breakfast, buffet lunch, snorkeling stops at Koh Nang Yuan’s viewpoint beach and one or two Koh Tao reef sites, and round-trip hotel transfers. Boats depart from Bang Rak or Big Buddha pier. Given the long day, this trip suits committed snorkelers and divers more than families with young children — pair it with the shorter Pig Island trip if energy is limited. Traveling independently rather than on a tour? See our Koh Samui to Koh Tao ferry guide, or our dedicated Koh Tao and Koh Nang Yuan day trip guide for an hour-by-hour plan.

4. Koh Phangan

Koh Phangan is the only island on this list reachable independently on a scheduled public ferry rather than a booked tour — see our full Koh Samui to Koh Phangan ferry guide for operators, piers and current timetables. Public ferries from Bang Rak, Maenam or Nathon cost 130-400 THB (~3.50-11 USD) one way and take 20-50 minutes; private speedboats cut the crossing to around 20-25 minutes.

A self-arranged day trip gives 6-8 hours on the island: rent a scooter at Thong Sala pier (200-300 THB/day, ~6-9 USD) and head to Than Sadet Waterfall, a royally inscribed stream on the east coast, or the beach clubs of Haad Rin, the Full Moon Party’s home beach. Thong Sala’s Saturday walking street adds street food and crafts if your visit lands on the right evening. Because Koh Phangan is on a public ferry network, it is also the easiest of these 12 trips to extend into an overnight stay if the island grabs you. See our Koh Phangan day trip guide for ferry times and a full route plan.

5. Full Moon Party Night Trip

Koh Phangan’s Full Moon Party on Haad Rin beach is the one trip on this list that runs overnight rather than as a day tour. As of Sep 2026, Thai regulations align every party with the actual night of the full moon, and the confirmed 2026 party dates include 26 September, 27 October, 24 November, 24 December, plus a New Year’s Eve countdown party on 31 December. Entry is roughly 200 THB (~5.50 USD) cash at the gate, and the party runs from around 9 PM to sunrise near 7 AM.

The Haad Rin Queen ferry from Big Buddha Pier is the only boat that lands directly at Haad Rin beach — every other operator lands at Thong Sala, an 8 km / ~20-minute songthaew ride from the party. See the ferry guide’s Full Moon Party section for night-boat schedules, and our nightlife guide for what else Samui itself offers if a single all-night party isn’t your pace. Book the return crossing in advance during party week — boats sell out and prices rise.

6. Five Islands Sunset Cruise

A Five Islands cruise threads a longtail or small cruiser between a cluster of limestone outcrops off Samui’s southwest coast, timed to end with sunset silhouetted against the Ang Thong archipelago. Shared sunset tours from Taling Ngam or Thong Krut typically run 1,200-1,800 THB (~34-51 USD) per person; a private longtail charter costs around 3,500 THB (~100 USD) for up to four hours, including soft drinks and snorkel gear for a group.

Boats usually leave around 16:30-17:00 and return after dark, so bring a light jacket for the evening breeze. This is the most photogenic and least physically demanding trip on the list — a good choice for couples or anyone who wants a Samui sunset without the 9 PM Full Moon Party crowd.

7. Khao Sok National Park (2-Day Trip)

Khao Sok National Park, roughly 6 hours from Samui by ferry and road, is the only genuinely overnight option on this list and arguably worth the extra day for its ancient rainforest and the limestone karsts of Cheow Lan Lake. Budget travelers can piece together a 2,500 THB (~71 USD) tour plus about 740 THB (~21 USD) for one night’s accommodation; packaged 2-day-1-night tours with return transfers from Samui run around 9,900 THB (~283 USD) per person, including floating bungalow accommodation, four meals, kayaking and morning and evening wildlife safaris on the lake.

Getting there independently costs 600-750 THB (~17-21 USD) via ferry from Nathon to Donsak plus a bus or minivan connection, about 6 hours total. Expect a 300 THB (~8.50 USD) Khao Sok National Park fee and a 40 THB (~1 USD) lake pier cleaning fee on top of any tour price. Given the travel time, this trip only makes sense as a genuine 2-day break from Samui, not a rushed single-day add-on — see our Khao Sok from Koh Samui guide for a full comparison of the 1-day tour, 2-day-1-night option and skipping it.

8. Surat Thani and Chaiya Temples

For a cultural day away from the beaches, the mainland town of Chaiya, about an hour north of Surat Thani, holds Wat Phra Borommathat Chaiya — a Srivijaya-era stupa believed to be more than 1,200 years old and one of southern Thailand’s most significant Buddhist monuments. Nearby, the forest monastery Wat Suan Mokkhaphalaram offers walking trails and occasional guided meditation sessions with resident monks (hours and program availability vary — confirm locally before planning around a specific session).

Reaching Chaiya from Samui takes real commitment: the Nathon-to-Donsak ferry runs about 1.5 hours, followed by roughly an hour’s drive to Surat Thani and another hour north to Chaiya. Unlike the other trips on this list, no fixed-departure group tour company runs this route from Samui as of Sep 2026 — it works best as a self-driven day with a rented car or a private driver, budgeting roughly 1,500-3,000 THB (~43-86 USD) for transport depending on how you arrange it. Reserve this trip for travelers with a genuine interest in Srivijaya-period history rather than a first-time Samui itinerary.

9. Sunset Cruise on the Red Baron Junk

The Red Baron is a 30-meter traditional sailing junk, the largest of its kind based on Koh Samui, carrying up to 70 passengers on sunset dinner cruises departing from the Bophut / Big Buddha pier area. The standard sunset dinner cruise costs around 1,995 THB (~57 USD) per person and includes hotel transfers, a welcome cocktail, appetizers and a Thai buffet dinner served on board as the sun sets over the Gulf of Thailand.

Beyond sunset cruises, the same boat runs full-day charters to Ang Thong or Koh Phangan for private groups. It’s a step up in comfort and romance from a standard speedboat tour, and a natural pick for anniversaries or a last-night-on-Samui dinner with a view.

10. Private Boat Charter

Chartering a boat privately — speedboat, longtail or small yacht — trades group-tour prices for full control of the itinerary. Speedboat charters start around 17,500 THB (~500 USD) for the boat for a full day, typically covering Ang Thong, Koh Tao, Koh Nang Yuan, Koh Phangan or a custom mix of islands, with an English-speaking guide, life jackets and snorkeling gear usually included. Lunch and marine park entrance fees are typically extra, at 200-500 THB (~5.50-14 USD) per person for food.

Charters depart from Bophut, Bang Rak or Maenam pier depending on the operator. This is the most expensive option on this list per person for a small group, but for four or more travelers splitting the boat cost, it can land close to shared-tour pricing while skipping the crowds and fixed schedule of a group boat.

11. Jungle Safari 4WD to Na Muang and Secret Buddha Garden

A 4WD jungle safari swaps boats for ex-army trucks bouncing up Samui’s interior mountain roads to the island’s strangest attraction: the Secret Buddha Garden, a hillside collection of Buddhist and mythological statues built by a local farmer starting in the 1970s. Half-day tours cost roughly 1,300-1,700 THB (~37-49 USD); full-day versions with lunch and an included monkey-show stop run 1,700-2,100 THB (~49-60 USD).

Most itineraries combine the Secret Buddha Garden with a short hike to Na Muang Waterfall and a photo stop at the Hin Ta Hin Yai rock formations near Lamai. Tours run with hotel pickup rather than from a pier, so there’s no fixed departure point — book through any tour desk or hotel concierge. This is one of the few day trips on the list that doesn’t require getting on a boat, making it a reliable backup when Gulf conditions are too rough for island crossings.

12. Island Ring-Road Self-Drive

The cheapest and most flexible “day trip” on this list doesn’t leave Koh Samui at all: renting a scooter or car and driving the roughly 50 km Route 4169 ring road around the island’s coastline. A scooter costs 200-300 THB/day (~5.50-8.50 USD); a small car rental runs 1,200-1,800 THB/day (~34-51 USD). Confirm your travel insurance covers motorcycle riding before renting a scooter — many standard policies exclude it.

A full loop with stops takes a leisurely day: beaches on the north coast (Nathon, Bang Rak), temples and viewpoints on the northeast, Chaweng and Lamai on the east and southeast, then the quieter south and southwest coast back toward Nathon. It’s the best option for travelers who want to set their own pace, skip group-tour departure times, or simply don’t have another full day to spare for an island-hopping trip.

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How We Chose These Day Trips

This list favors trips with the widest genuine appeal — established boat operators, national park destinations, and routes with clear public transport or tour options — over niche add-ons better suited to repeat visitors. Every price above reflects the shared or standard tour tier as of Sep 2026, gathered from operator listings and comparison platforms; actual rates vary by season, group size and how far in advance you book. We flagged the one trip (Chaiya temples) where no fixed-departure tour exists so you know it requires self-organizing.

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FAQ

Is Ang Thong Marine Park worth it from Koh Samui?

Yes — Ang Thong Marine Park is the most consistently recommended day trip from Koh Samui, combining a viewpoint hike, kayaking and a saltwater lagoon across 42 islands for as little as 1,200 THB (~34 USD) plus the 300 THB park fee. It suits most fitness levels, though the Wua Talap viewpoint climb involves around 500 steps.

Can you visit Ang Thong or Pig Island independently, without a tour?

No. There is no scheduled public ferry to Ang Thong Marine Park, Pig Island (Koh Madsum) or Koh Tao from Koh Samui. Reaching any of them requires a booked group tour or a private boat charter — Koh Phangan is the only island on this list with a public ferry option.

Speedboat or big boat for Ang Thong — which is better?

Big boats are cheaper (from 1,200 THB) and more stable in choppy seas but carry 50-70 passengers and feel crowded. Speedboats cost more (1,700-2,850 THB) but run in smaller groups of 8-15, reach the islands faster, and generally include more kayaking and snorkeling time.

Will I get seasick on a Koh Samui day trip boat?

It’s possible, especially on longer crossings to Koh Tao or Ang Thong during choppier months. Take motion sickness tablets an hour before departure, sit toward the boat’s center or on deck rather than below, and keep your eyes on the horizon. December-February seas are generally calmest.

Do day trips get cancelled during the monsoon?

Yes — the Nov-Dec monsoon season brings the highest risk of cancelled or shortened boat trips due to swells, particularly for Ang Thong, Koh Tao and Five Islands cruises. Land-based options like the jungle safari or ring-road self-drive are more reliable backups during this period.

Which day trip is best for a first-time visitor to Koh Samui?

Ang Thong Marine Park for scenery and activity variety, or Pig Island and Koh Tan for a shorter, easier half-day if traveling with young children or limited time. Both depart with hotel pickup and require no independent planning beyond booking the tour.