Khao Sok from Phuket: Day Trip, Fees and Raft Houses

Khao Sok from Phuket is one of the most rewarding trips you can take off the island: a drive of roughly three hours north into Surat Thani province, where Cheow Lan Lake fills a valley of jungle-covered limestone peaks inside one of southern Thailand's oldest rainforests. You can see it on a long day tour, but a night on a floating raft house is what most visitors remember.

This guide explains how the trip works, what the national park fees are, whether a day trip or an overnight stay suits you better, and when to go. With the wet season easing in November and December, the coming months are a good time to plan it.

What is Khao Sok and why visit?

Khao Sok National Park covers about 739 square kilometres and includes Cheow Lan Lake, a 165-square-kilometre reservoir held back by the Ratchaprapha Dam. The park protects the largest area of virgin forest in southern Thailand. Its karst towers rise straight out of green water, and the forest is home to gibbons, macaques, wild elephants and the Malayan tapir, although most wildlife is shy and hard to spot.

The park is also famous for Rafflesia kerrii, a giant parasitic flower known locally as bua phut, and for the endangered Kerriodoxa elegans palm, which is known from only two locations. For a Phuket visitor used to beaches and speedboats, it is a complete change of scene: fresh water, silence and mist on the cliffs in the early morning.

How far is Khao Sok from Phuket?

The lake pier and the park headquarters are around 180 km from Phuket Town, and the drive takes about three hours each way, crossing the Sarasin Bridge and heading north through Phang Nga. Expect five to six hours in a vehicle on a day trip. One detail surprises many people: the park headquarters near Khao Sok village and the Cheow Lan Lake pier in Ban Ta Khun district are about an hour apart by road, so treat them as two separate places.

Most visitors join a tour with hotel pick-up, often leaving around 6.30am. If you would rather go independently, hire a car and driver or drive yourself and leave early. If you are just arriving, our guide to the Phuket airport transfer compares taxis, ride-hailing apps and pre-booked private cars.

How much are the Khao Sok entrance fees?

Fees are set by the Department of National Parks, Wildlife and Plant Conservation and are charged by zone. The Ratchaprapha Dam and lake area has been a special-fee zone since May 2024. Current published rates are:

Zone	Foreign adult	Foreign child (3-14)	Thai adult / child
Cheow Lan Lake (dam zone)	300 baht	150 baht	40 / 20 baht
Park headquarters and trails	200 baht	100 baht	40 / 20 baht

A small pier fee is also commonly collected at the lake. Bring cash, because card payment is not reliable at park checkpoints, and keep your ticket on you. Many tours include fees in the price, so ask before you pay so you are not charged twice.

Day trip or overnight: which is better?

A typical day tour to Khao Sok from Phuket combines the drive, sometimes a stop at a viewpoint in Phang Nga, a longtail boat ride between the limestone pillars, lunch at a floating restaurant, kayaking or swimming, and the drive back in the late afternoon. It works if you only have one free day, but you get only a few hours on the water.

An overnight stay changes the experience. Options include:

• Private raft houses, from basic bamboo huts with shared bathrooms to comfortable floating bungalows with private facilities.
• Park-run rafts at ranger stations on the lake, booked through the national park reservation system, with boat transfers paid separately.
• Jungle lodges near Khao Sok village, a better base if you want to hike forest trails from the headquarters.

Staying overnight lets you see the lake at dawn and dusk, when wildlife is most active and the light on the cliffs is at its best. Ask in advance about electricity hours, meals and whether the boat transfer is included. Phone signal is weak or absent on much of the lake, so download maps and tickets before you leave.

When is the best time to go?

Khao Sok sits between the Andaman Sea and the Gulf of Thailand and catches monsoon rain from both, making it one of Thailand's wettest regions at around 3,500 mm a year. The wet season usually runs from late April to December, and the driest months are January to April. Temperatures range from about 22C to 36C all year.

That said, the lake is open year-round, and rain often comes in short bursts. Some activities are seasonal: the popular Nam Talu cave hike, which involves wading through a river cave, closes during the rainy season for safety. Leeches are common on forest trails in wet months, so pack leech socks or long trousers. If you are timing a wider island trip, our look at Phuket in December explains what the weather is doing on the coast.

What should you pack for Cheow Lan Lake?

• Cash in small notes for park fees, drinks and tips.
• Swimwear, a quick-dry towel and sandals that can get wet.
• Insect repellent, sunscreen and a hat for the open boat.
• A light rain jacket and a dry bag for your phone and camera.
• A torch or headlamp if you are staying on a raft.
• Your passport, since overnight stays and park checks may need it.

How does Khao Sok compare with other trips from Phuket?

Most excursions from Phuket head out to sea. A speedboat to the Similan Islands from Phuket is about reefs, white sand and snorkelling, while Khao Sok is about freshwater, rainforest and karst scenery. Many visitors combine both on the same holiday: a sea day while the Similans are open, then a night on the lake. Divers can add a reef day too; see our guide to diving in Phuket. If you are still planning your arrival, remember to complete the Thailand Digital Arrival Card before you fly.

Frequently asked questions

Can I visit Khao Sok as a day trip?

Yes. Day tours to Khao Sok from Phuket run daily, but with about three hours of driving each way you will have only a few hours on the lake. One night is better if you can spare it.

Do I pay both park fees?

Only if you visit both zones. A lake trip needs the 300 baht lake ticket; hiking at the headquarters needs the 200 baht park ticket. Tickets are generally valid for one day unless you stay overnight inside the park.

Is swimming in Cheow Lan Lake safe?

Swimming from raft houses and boats is a normal part of most tours. The water is deep, so use a life jacket if you are not a strong swimmer and follow your guide's advice.

Will I see wild elephants or tigers?

Sightings of large mammals are rare. Gibbons, macaques and birds are more likely, especially at dawn. There is no recent camera-trap evidence that tigers still live in the park, despite claims online.

Photo: Cheow Lan Lake, Khao Sok, by Argenberg, CC BY 4.0, via Wikimedia Commons.