Short answer
How long is the speedboat ride from Koh Samui to Koh Tao?
About 1 to 1.5 hours each way over open sea, depending on the weather. The way back takes about 90 minutes.
Koh Nang Yuan is open to day visitors only from 10 am to 3 pm, so every day-trip boat arrives in the same window and midday is crowded and very hot; take water in a reusable bottle, because single-use plastic bottles are not allowed on the island. The Japanese Gardens reef is right off the beach, and fins are not allowed when snorkeling there. Resort guests have the island to themselves before 10 am and after 3 pm, which is why the day trip is built around those hours. This guide covers the Koh Tao & Koh Nang Yuan Snorkeling Day Trip by Speedboat from the pickup to the last stop — the mood, the route and the tips guides mention in passing.
What makes the Koh Tao & Koh Nang Yuan Snorkeling Day Trip by Speedboat worth your time
A minivan collects you from your hotel on Koh Samui between about 7:30 and 8:30 am and takes you to the pier in the north of the island, where there are coffee, tea and a light snack. The speedboat leaves at about 9:00 and reaches Koh Tao at about 10:00-10:30. You snorkel in one of the bays, have lunch ashore at about 12:00, then spend about 2.5 hours at Koh Nang Yuan, which is open to day visitors until 3 pm. The boat leaves at about 3:00 pm, takes about 90 minutes to cross back, and you are driven to your hotel between about 4:00 and 5:00 pm. The bay and the order of the stops change with the sea.
Route highlights at a glance
The standout moments of the Koh Tao & Koh Nang Yuan Snorkeling Day Trip by Speedboat.
- Nang Yuan viewpoint — A 15-20 minute climb, short but steep, to the view of three islands joined by white sandbars.
- Koh Tao snorkeling — Snorkel in a Koh Tao bay such as Mango Bay, Hin Wong Bay or Lighthouse Bay, chosen by the crew for the sea and the season.
- Japanese Gardens reef — Snorkel off the beach of Nang Yuan at the Japanese Gardens, one of the island's most popular reefs.
- Thai lunch on Koh Tao — A Thai-style lunch at a restaurant ashore, typically rice, curries, chicken and Pad Thai, with halal and vegetarian options.
How the day unfolds, step by step
The route in order; exact pickup times and what shifts by season are in the schedule.
- Hotel pickup — Air-conditioned minivan from your hotel or villa on Koh Samui, about 7:30-8:30 am; the time is confirmed with your booking.
- Pier on Koh Samui — Coffee, tea, water and a light snack, then life jackets and snorkeling gear; the speedboat leaves at about 9:00 am.
- Crossing to Koh Tao — About 1 to 1.5 hours over open sea, passing Koh Phangan; the boat has a sunshade.
- Snorkeling on Koh Tao — A stop at one of the bays, such as Mango Bay, Hin Wong Bay or Lighthouse Bay, from about 10:00 am; the crew chooses the bay for the sea and the season.
- Lunch on Koh Tao — A Thai-style lunch at a restaurant ashore, at about 12:00.
- Koh Nang Yuan — About 2.5 hours: the beach and sandbar, the 15-20 minute climb to the viewpoint and snorkeling at the Japanese Gardens.
- Back to Koh Samui — The boat leaves Nang Yuan at about 3:00 pm and takes about 90 minutes; you are at your hotel between about 4:00 and 5:00 pm.
Insider tips
The details a guide mentions on the day — worth knowing before it.
- Entrance fees are paid in cash on the day: Koh Nang Yuan charges 250 baht per person.
- Single-use plastic bottles are not allowed on Koh Nang Yuan; bring a reusable bottle.
- No fins when snorkeling at Nang Yuan; the boat provides a mask, snorkel and life jacket.
- The viewpoint climb takes 15-20 minutes and is steep: wear shoes or sandals with grip.
- Use reef-safe sunscreen only, and do not touch marine life or step on coral.
- If your hotel is on a hill or far from a main road, we set a meeting point close by.
Best time of year
February to August is usually the calmest time, with very hot days in April and May, so bring sunscreen; the sea can be rough, and trips can be moved to another date, in the wetter months from late October to December.
Whether it is worth the money and what the price covers is in why book it.
Questions and answers
How long is the speedboat ride from Koh Samui to Koh Tao?
About 1 to 1.5 hours each way over open sea, depending on the weather. The way back takes about 90 minutes.
Will the crossing be rough?
It is open water in the Gulf of Thailand, so it can be bumpy in wind and swell, mostly in the wetter months from late October to December. The boat has a sunshade; take seasickness tablets if you need them. If the sea is unsafe, the operator moves the trip to another date or refunds it.
Which snorkeling spots do we visit?
On Koh Tao, one of Mango Bay, Hin Wong Bay or Lighthouse Bay, depending on the sea and the season. At Koh Nang Yuan, the Japanese Gardens reef. The bays and the order can change on the day.
How much are the entrance fees?
Koh Nang Yuan charges 250 baht per person (50 baht for Thai nationals), paid in cash on arrival. An operator lists 250 baht per adult and 120 baht per child for the day. The fees are not part of the tour price, and we confirm the amount for your group when you book.
Read next
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- Koh Nang Yuan entrance fee and rules: what you pay, what you cannot bring and how hard the viewpoint climb is
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- Koh Tao & Koh Nang Yuan Snorkeling Day Trip by Speedboat — From $55 per person