Gulf islands · the resort island and the diving island
Koh Samui vs Koh Tao: which is better for your trip?
Koh Samui for comfort, an airport and a week of easy beach days; Koh Tao to learn to dive and for the best snorkeling in the Gulf. The fast boat between them takes 1.5 to 2 hours, so most trips that want both simply do both.
- Destination
- Koh Samui
- Koh Tao
- Budget day
- ฿1,600
- ฿1,200
- Mid-range day
- ฿4,500
- ฿3,200
- Best months
- January – September
- March – September (calmest water, best visibility)
- Crowds
- High
- Moderate
- Listed here
- 568 places
- 153 places
By Mac Kiley · Updated Oct 30, 2026
Pick Koh Samui if…
- You want to fly in and be on the beach the same afternoon
- A family trip, or a resort with a pool and a spa
- Long sandy beaches with restaurants behind them
Pick Koh Tao if…
- Getting your Open Water certification, for about ฿11,000 to 12,500
- Snorkeling with turtles and blacktip reef sharks off the beach
- A small, social island where the day runs on the dive boats
Why I'd choose that way
Koh Samui is the Gulf's resort island, with an airport about an hour from Bangkok, Chaweng's beach clubs and the Green Mango bar zone, Lamai, Bophut's Fisherman's Village, calm north-coast beaches at Maenam and Choeng Mon, destination spas, and Ang Thong Marine Park for the boat day. It costs about ฿1,600 a day on a budget and ฿4,500 mid-range.
Koh Tao is small and steep, about 21 km² of granite boulders and pocket bays. It's one of the world's busiest places to learn to dive, with dozens of schools on the west coast and an Open Water course for about ฿11,000 to 12,500, often with a room included. Sairee's 1.85 km is the only long beach. The rest are coves down steep roads, and the snorkeling off them is the best in the Gulf. A budget day runs about ฿1,200.
They share the Gulf calendar, best from February to September and wet from October to December, wettest in November. That matters more on Tao, where the boats can be rough or canceled and dive visibility drops.
Koh Samui vs Koh Tao, category by category
Koh Samui takes getting there, beaches, nightlife, families and getting around. Koh Tao takes diving, snorkeling and cost.
Getting there
Koh Samui winsKoh Samui, with its own airport about an hour's flight from Bangkok. Koh Tao is boat-only. From Samui it's 1.5 to 2 hours by fast boat, and from Bangkok, Lomprayah's night bus and catamaran through Chumphon arrives at 08:45 for ฿1,250.
Beaches
Koh Samui winsKoh Samui, for long sand with everything behind it, at Chaweng, Lamai and the calm north coast. Koh Tao isn't a long-beach island. Sairee's 1.85 km is the one big stretch, and the rest are small coves you reach down steep roads or by boat.
Diving
Koh Tao winsKoh Tao. Its more than 25 dive sites include shallow, sheltered training spots and the deep pinnacles, Chumphon Pinnacle and Sail Rock, both down to about 45 m, where whale sharks turn up. An Open Water course takes three to four days for about ฿11,000 to 12,500.
Snorkeling
Koh Tao winsKoh Tao, which has the best snorkeling off the beaches in the Gulf. People swim with turtles and small blacktip reef sharks at Shark Bay early in the morning, Aow Leuk has coral straight off a small beach, and Koh Nang Yuan's sandbar costs ฿250 to land.
Nightlife
Koh Samui winsKoh Samui, with Chaweng's beach clubs by day and Soi Green Mango and Soi Reggae at night, plus fire shows at Fisherman's Village. Tao's nights center on Sairee, with beach bars, fire shows and pub crawls full of dive students.
Families
Koh Samui winsKoh Samui, for the airport, the resorts with pools and the calm, shallow north-coast beaches at Maenam and Choeng Mon. Koh Tao's steep roads and small coves make it harder work with young children.
Getting around
Koh Samui winsKoh Samui, where a ring road circles the island and Grab works on it. Koh Tao's roads are very steep concrete, with sand and gravel on the turns, so most people use the pickup-truck taxis and taxi boats, about ฿150 to 200 from Mae Haad to Tanote.
Cost
Koh Tao winsKoh Tao, at about ฿1,200 a day on a budget against ฿1,600 on Samui, and ฿3,200 against ฿4,500 mid-range. Tao's small extras add up, with ฿50 to 100 at viewpoint and beach gates and ฿250 to 350 per ATM withdrawal on a foreign card.
Weather
EvenEven. February is the driest month on both, with about 64 mm of rain at the Koh Samui station, and November the wettest, with about 445 mm. From October to December Tao's boats can be rough or canceled and the dive visibility drops.
Koh Samui vs Koh Tao at a glance
| Factor | Koh Samui | Koh Tao |
|---|---|---|
| Budget day | ฿1,600 · $48 | ฿1,200 · $36 |
| Mid-range day | ฿4,500 · $134 | ฿3,200 · $96 |
| Mid-range hotel | ฿3,500 · $104 | ฿2,200 · $66 |
| Best months | January – September | March – September (calmest water, best visibility) |
| Rainy months | October – December | October – December |
| Avoid | October – December (Gulf Coast monsoon) | November (monsoon swell peaks) |
| Temperature | 24–32°C | 25–32°C |
| Crowds | High · peak July – August & December | Moderate · peak December – January & July – August |
| Best for | Resort comfort, spas, an easy island rhythm | Learning to dive, snorkeling, a young crowd |
| Beach | Chaweng, Lamai, Bophut, Maenam | Sairee; Tanote and Ao Leuk bays |
| Nights | Chaweng beach clubs; Full Moon Party next door | Sairee's sunset bars |
| Getting there | Direct flights (Bangkok Airways) or ~1.5 hr ferry from Surat Thani | 1.5–2 hr catamaran from Chumphon or ferry from Samui; no airport |
Daily figures are typical totals for a hostel or mid-range hotel, food, local transport and one activity; they move with season. USD at ฿33.5. Full breakdown on the Thailand travel costs page.
What you'd actually do there
The best-known places on each side, one per kind, plus a hidden gem. Ratings re-sync from Google monthly.
Koh SamuiHigh crowds
Elephant Jungle Sanctuary SamuiActivities & Tours4.8(472)
THE COCOON - SAMUI VIEWPOINTRestaurants & Food4.7(10,565)
Wat Plai LaemTemples & Culture4.7(8,388)
Oscars FashionMarkets & Shopping Hidden gem5.0(353)
- Ang Thong National Marine Park — 42 islands with kayaking, snorkeling, and the Emerald Lagoon
- Fisherman's Village in Bophut with its Friday Walking Street market and waterfront dining
- Na Muang waterfalls — two tiers of cascades deep in the island's jungle interior
Koh TaoModerate crowds
Big Blue Diving School Koh TaoActivities & Tours5.0(5,573)
Dough Koh TaoRestaurants & Food4.9(4,363)
Assava Diving Koh Tao | PADI 5* CDC Scuba Diving Centre & Hotel Beach Resort, ThailandHotels & Resorts4.9(2,642)
The Little Bar Koh TaoNightlife & Bars Hidden gem5.0(71)
- Open Water courses from about ฿11,000 — dozens of schools
- Chumphon Pinnacle and Sail Rock — the island's whale-shark sites
- Koh Nang Yuan's triple-islet sandbar, minutes offshore
The day trips that decide it
What each place is a base for. Real prices and dates are on the partner.
Koh SamuiAng Thong Marine Park boat days
Most bookings cancel free up to 24 hours ahead
See tours and pricesKoh TaoDive courses and Koh Nang Yuan trips
Most bookings cancel free up to 24 hours ahead
See tours and pricesAlso on Klook:Koh Samui toursKoh Tao tours
Where to stay
Best Hotels in Koh Samui
My pick at each price level in Koh Samui, going by Google's hotel class. Hotels from my ranked list of the 10 best come first, then the best-reviewed. Each button opens the hotel on Booking.com with your dates filled in.
#1Luxury · 5-star
Explorar Koh Samui4.8 (2,489 reviews)
Stylish beachside resort in Mae Nam with infinity pool, gulf views, and highly rated service.
Check rates
#6Mid-range · 4-star
Baan Haad Ngam Boutique Resort & Villas4.7 (1,766 reviews)
Beachfront boutique resort on Koh Samui's quieter north coast, with villa-style rooms and attentive staff.
Check rates
Where to stay
Best Hotels in Koh Tao
My pick at each price level in Koh Tao, going by Google's hotel class. Hotels from my ranked list of the 10 best come first, then the best-reviewed. Each button opens the hotel on Booking.com with your dates filled in.
#5Luxury · 5-star
Jamahkiri Dive Resort & SPA4.2 (637 reviews)
Swanky seaside resort offering colorful rooms & suites, plus Thai dining, an outdoor pool & a spa.
Check rates
#3Mid-range · 4-star
Sai Daeng Resort4.4 (1,265 reviews)
Laid-back beachfront resort offering an outdoor pool & a hot tub, plus a bar & terrace dining.
Check rates
#10Budget · 3-star
Blue Tao Beach Hotel - Koh Tao4.5 (317 reviews)
A well-regarded beachside hotel on Koh Tao, offering comfortable accommodation steps from the water.
Check rates
Doing both Koh Samui and Koh Tao
Fast boats from Samui reach Koh Tao in 1.5 to 2 hours for about ฿700, slow ferries take up to three hours for ฿450 to 550, and most sailings call at Koh Phangan on the way. Every boat docks at Mae Haad pier on Tao. Fly into Samui, stay there first, then go north.
Koh Samui to Koh Tao by fast boat or ferry, with every operatorBookable departures · refreshed daily
Koh Samui → Koh Tao: departure times you can book now
Every departure currently on sale through 12Go for this route, by class. Fares are the spread across the classes shown; the exact price for a seat and date is on the booking page.
Ferry & speedboat
| Class | Departures |
|---|---|
| Catamaran | 08:00, 12:30, 15:30 |
| Speedboat | 12:15, 14:30 |
| High Speed Ferry | 10:30 |
Times and fares as sold on 12Go, refreshed daily. Services sold only locally — ordinary trains, weekend excursion trains, walk-up pier tickets — are not listed; see the table above for those. Sponsored link: we may earn a commission when you book, at no extra cost to you.
Koh Samui or Koh Tao? Questions people ask
Is Koh Tao nicer than Koh Samui?
It depends on what you want from the water. Koh Tao is smaller and prettier underwater, with the best snorkeling in the Gulf and cheap dive courses. Koh Samui has the longer beaches, the resorts and the airport.
Is Koh Tao cheaper than Koh Samui?
Yes, about ฿1,200 a day on a budget against ฿1,600, and ฿3,200 against ฿4,500 mid-range. Budget for Tao's small fees too, ฿50 to 100 at viewpoint and beach gates, ฿250 for Koh Nang Yuan and ฿250 to 350 per ATM withdrawal on a foreign card.
How long is the ferry from Koh Samui to Koh Tao?
1.5 to 2 hours by fast boat for about ฿700, or up to three hours by slow ferry for ฿450 to 550. Most boats stop at Koh Phangan on the way.
Can you do Koh Tao as a day trip from Koh Samui?
Yes, on a snorkeling day trip that stops at Koh Nang Yuan and Tao's bays, but you'll arrive with every other day boat. To dive or see the island properly, stay at least four nights.
Which is better for families?
Koh Samui, for the airport, the resorts and the calm north-coast beaches. Koh Tao's steep roads and small coves make it harder with young children.
Written by
Mac Kiley
I lived in Bangkok for four years and traveled the country from there. The guides are my own opinions, written the way I'd explain them to a friend planning a trip.
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