Similan Islands: Opening Season, Park Fees and How to Book
The Similan Islands are open from 15 October to 15 May and closed from 16 May to 14 October. The park opened for the 2026 season on 15 October. Under the 2022 schedule a foreign adult pays THB 500 and a foreign child THB 250. Boats leave Tap Lamu pier at 08:30 and return at 15:00.
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Similan season: open 15 October to 15 May
The Similan Islands close for the season from 16 May to 14 October and open from 15 October to 15 May every year. The park sits in Phang Nga. The rainy season brings the southwest monsoon, heavy rain and strong waves, and the park calls travel there in that period not safe for tourists.
The park opened for the 2026 season on 15 October. The Department of National Parks announced the Andaman-coast marine parks open for the season.
| Source | What it covers | Dates |
|---|---|---|
| Park page | Closed season, whole park | 16 May to 14 October |
| Park page | Open season, whole park | 15 October to 15 May |
| Gazette annex, 9 January 2026 | Ko Similan (Koh Paet) and Ko Miang (Koh Si), closed | 16 May to 14 October |
| DNP news, 16 October 2026 | First day of the 2026 season | 15 October 2026 |
The park has an average temperature of 27 degrees Celsius through the year and average annual rainfall of 3,560 mm.
Similan park fee for foreigners
Similan is a Group 4 park, together with the Surin Islands. As of the 2022 fee schedule a foreign adult pays THB 500 and a foreign child THB 250. A Thai adult pays THB 100 and a Thai child THB 50. The schedule took effect on 7 June 2022.
| Visitor (2022 schedule) | Adult | Child |
|---|---|---|
| Foreigner, Group 4 park | THB 500 | THB 250 |
| Thai, Group 4 park | THB 100 | THB 50 |
How to pay and what to carry
DNP announced a QueQ e-ticket pilot in six parks, Similan among them. After you pay the park fee, carry the receipt with you in the park for inspection.
For the other park groups and the Phi Phi charge, see national park fees for foreigners.
How to book and get to the Similan boats
The park runs no boats of its own for the crossing; private companies run them. Book at least about 3 days ahead.
- Choose a private boat company and book at least about 3 days ahead.
- Drive or transfer to Tap Lamu pier (ท่าเรือทับละมุ), described below.
- Be on the pier for the 08:30 departure. All passenger boats leave together.
- Cross about 70 km to Ko Miang (Ko Si) and Ko Similan (Ko Paet).
- Keep your boat ticket to show on the way back. The boat leaves the island for the pier at 15:00.
Boat times and crossing
Boats leave Tap Lamu pier at 08:30 and come back from the island at 15:00, one trip a day each way. A speedboat crossing takes about 1.5 hours. The park office stands on Ko Miang.
Day-trip snorkel stops
Some companies stop to snorkel before landing: about 30 minutes at Ko Kao, about 1 hour with lunch at Ko Paet and about 30 minutes at Ko Chet. Ask your company which stops it makes before you book.
From Phuket
From Phuket airport it is about 100 km to Tap Lamu pier, through Phang Nga.
From Bangkok by road
Take Highway 4 through Takua Pa to Ban Lam Kaen, then turn right at the junction for about 5 km to Tap Lamu pier.
On the islands
The park has these islands: Ko Similan (Ko Paet), Ko Miang (Ko Si), Ko Bangu (Ko Kao), Ko Ha, Ko Hok, Ko Ta Chai and Ko Payu (Ko Chet). Snorkelling is a listed park activity. Ranger stations stand on Ko Miang, Ko Similan and Ko Ta Chai.
- The park restaurant opens daily 07:30 to 09:00, 11:00 to 14:30 and 18:30 to 20:00.
- The park shop for water, coffee and snacks opens daily 07:00 to 20:00.
- AIS and TRUE-DTAC have signal on Ko Miang (Ko Si); Ko Similan (Ko Paet) has TRUE-DTAC.
- The park phone numbers are 0 7645 3272 and 0 7645 3273.
Before you go
- Travel from 15 October to 15 May; the park is closed from 16 May to 14 October.
- Book the boat at least about 3 days ahead.
- Be at Tap Lamu pier for the 08:30 departure.
- Carry the park fee receipt in the park.
- Keep your boat ticket for the return at 15:00.
- Compare seasons in best Thai islands by month.
- For the other Andaman park, read the Maya Bay and Phi Phi park fee page, and the Thailand islands guide for the rest.
Step by step
- Check the seasonThe park is open from 15 October to 15 May.
- Book a private boat companyBook at least about 3 days ahead. The park runs no boats of its own.
- Reach Tap Lamu pierTake Highway 4 to Ban Lam Kaen and turn right at the junction for about 5 km.
- Board the boatAll passenger boats leave the pier together, at 08:30.
- Keep your boat ticketShow it on the way back. The boat leaves the island at 15:00.
Not confirmed: Park fee today: THB 500 is the 2022 schedule, and the fee box on the park page is an image, so read the amount on your ticket. Booking: DNP announced a QueQ e-ticket pilot that includes Similan; ask your boat company whether the park ticket is in its price.
Common questions
When are the Similan Islands open?
The season runs from 15 October to 15 May. The park is closed from 16 May to 14 October.
Have the Similan Islands opened for 2026?
The park welcomed tourists on 15 October 2026, the first day of the season.
How much is the Similan park fee for foreigners?
Under the 2022 schedule a foreign adult pays THB 500 and a foreign child THB 250. Similan is in Group 4 with the Surin Islands.
Where do the boats to the Similan Islands leave from?
They leave Tap Lamu pier (ท่าเรือทับละมุ) at 08:30. The pier is reached by a right turn at the Ban Lam Kaen junction.
How long is the boat ride?
About 1.5 hours by speedboat. The crossing is about 70 km.
How far ahead do you book the boat?
At least about 3 days ahead. The park runs no boats of its own for the crossing, and private companies run them.
Why are the Similan Islands closed from May to October?
The southwest monsoon brings heavy rain and strong waves, and the park calls travel there in that period not safe for tourists.
Is there phone signal on the islands?
AIS and TRUE-DTAC have signal on Ko Miang (Ko Si); Ko Similan (Ko Paet) has TRUE-DTAC.
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