Khao Sok National Park captures the essence of Southern Thailand’s diverse environment. From vast tropical rainforests and lush evergreen groves to meandering rivers and majestic limestone cliffs, this park offers an unforgettable natural escape. Visitors come here to enjoy hiking, water activities, and wildlife watching as they immerse themselves in both adventure and nature. For more on incredible destinations in Thailand, check out our curated guides.
Plants and Animals
Plants
Large portions of Khao Sok are cloaked in tropical evergreen and rainforest vegetation. With nearly 200 floral varieties per hectare, the biodiversity here is truly astounding. Among the notable species are the giant Rafflesia, intricate Pitcher Plants, Bamboo groves, Dipterocarp Trees, Figs, swaying Coconut Palms, and robust Lianas. These lush greens not only create a vibrant ecosystem but also provide visitors with a unique botanical experience.
Animals
Khao Sok National Park is teeming with wildlife. The park is home to over 50 mammal species, more than 310 bird species, 30 bat species, and countless reptiles, amphibians, and insects. Keep your eyes peeled for Asian elephants, elusive Barking Deer, Malayan Sun Bears, and agile gibbons swinging overhead. Bird enthusiasts can delight in sightings of the Great Hornbill, Blue-winged Pitta, Kingfishers, and Grey-breasted Spiderhunters. In addition, the reptile and amphibian populations include the Asian Water Monitor, Red-tailed Green Rat Snake, Mangrove Pit Viper, Monocled Cobra, and even the occasional King Cobra.
Beauties of Khao Sok National Park
Chiew Lan Lake (Ratchaprapha)
Approximately 65 kilometers east of the Khao Sok National Park headquarters lies the stunning Chiew Lan Lake. Created in 1982 following the construction of the Ratchaprapha Dam, the lake is framed by limestone outcrops that rise to over 950 meters, offering dramatic views and plenty of photo opportunities.
Chiew Lan Lake is a popular stop on both day and overnight tours, although independent travelers also visit. Local guides frequently organize trips that include boat transfers, canoeing, and trekking excursions along the lake’s edge. Renting a boat from local fishers will cost about 2,000 Baht (roughly 65 USD) per day—a small price to pay for exploring the coves, waterways, and mysterious caves along the shoreline.
From the southwestern coast, hikers can venture to two remarkable caves. The first, Tham Nam Thalu, amazes with its impressive limestone formations and underground streams. Due to safety concerns during the rainy season, it’s best visited during drier periods.
The second, Tham Si Ru, carries an air of history – its four interconnected passageways once served as a hideout for communist rebels between 1975 and 1982. A scenic pathway along the lake’s southwestern shore leads right up to the cave entrance.
Ton Kloi Waterfall
A 7-kilometer path from the park headquarters winds along the Sok River en route to the stunning Ton Kloi Waterfall—a year-round cascade originating from the Klong Sok canal. The trail is mostly accessible on foot, though the final 4 kilometers might require the guidance of a local expert. Along the way, be treated to a series of smaller waterfalls, natural swimming holes, and gorge formations, culminating in the breathtaking Ton Kloi cascade.
While several waterfalls dot the landscape of Khao Sok, many are best appreciated during the wet season, as some dry up in off-peak periods.
Khlong Long
Khlong Long, a favoured waterway located on the northeast side of Chiew Lan Lake—less than 20 kilometers from the dock—offers an immersive jungle experience. A two-and-a-half-hour hike through the forest reveals scenic limestone slopes, an intriguing cave, and a peaceful viewpoint. Travelers will also come across five modest raft houses, which add an authentic touch to the rustic landscape.
Khlong Saeng
Located about 25 kilometers from the Ratchaprapha Dam, the Khlong Saeng River was once hailed as Thailand’s most remote waterway – an era that predates the dam’s construction. Entry to this secluded section of the lake requires obtaining permits from the Khao Sok office with a small fee. Ideal for hiking and wildlife observation, the trails here offer glimpses of cascading waterfalls, old mining sites, and a variety of wildlife such as gibbons, deer, elephants, mainland serow, the great Argus, and even rare bear species.
Khlong Mon
Situated on the northern shore of the lake, about 25 kilometers from the Chiew Lan Lake Dock, Khlong Mon features dramatic high heels and shallow valleys. These natural corridors create an excellent habitat for hornbills, eagles, and several other bird species. A pleasant forest trail leads west toward Khlong Saeng and includes a shorter 5-kilometer segment branching off near Tam Gia, the area’s only raft house.
Things to Do in Khao Sok National Park
River Tubing
For those wanting to embrace the thrill of the water, river tubing along the Sok River is an absolute must. During the stormy season, when the river brims with water, you can rent inner tubes and enjoy a float that lasts between one to one-and-a-half hours. Local tour operators usually offer transport from the starting point, and the activity costs approximately 400-500 Baht (roughly 13-15 USD per person).
Canoe Trip
If you prefer a more serene experience than tubing, consider a canoe trip down the gently flowing Sok River. A guided canoe tour not only offers a peaceful journey but also enhances your chance to spot local wildlife. Expert guides familiar with the area help uncover hidden gems, such as remote caves and local communities where residents fish and wash. This delightful activity generally takes around two-and-a-half hours and costs approximately 800 Baht (around 25 USD).
Bamboo Rafting
For a truly off-the-beaten-path adventure, join a bamboo rafting expedition. Floating gently on a moving bamboo raft under the guidance of a local leader, you’ll learn about the distinctive flora and fauna of the region. Many tours also include stops at hidden caves and light jungle treks along the route. Bamboo rafting typically takes about 4 hours and costs around 1,200 Baht (roughly 38 USD), making it an unforgettable way to experience the jungle.
Wildlife Watching
Khao Sok is a haven for nature enthusiasts and bird watchers alike. Among the easily spotted species are long-tail macaques and banded langurs. While larger mammals such as elephants rarely appear on the common tourist trails, amphibians, snakes, and lizards are often observed in the vicinity of waterfalls, particularly at dusk. For more insights on local wildlife in Thailand, explore our wildlife guides.
What to Pack for Khao Sok
Packing well is essential when exploring the tropical rainforests of Khao Sok National Park. Here’s a helpful checklist for your adventure:
- Drybag (to keep valuables and electronics safe)
- Sunglasses and sunscreen
- Playing cards for downtime
- Reusable water bottle
- Swimwear and extra clothes for water activities
- Chacos or sturdy water shoes
- Bug spray or balm
- Towel and headlamp
- A pair of flip-flops
- Snacks to keep you energized
Accommodations
Khao Sok National Park offers a wide range of accommodations, from budget-friendly resorts and charming B&Bs to cozy lodges and quaint cottages. Many come equipped with modern amenities such as Wi-Fi, on-site restaurants, and free parking. For travelers seeking a more intimate escape, there are romantic mid-range resorts available as well.
For a different experience, consider camping near the park’s entrance. The campsite comes with basic facilities including toilets, showers, and even a small café. You may also rent tents, pillows, blankets, and sleep bags at a nominal fee. In addition, numerous restaurants in the nearby Khao Sok village serve both traditional Thai and international delicacies, ensuring that your culinary needs are well taken care of.
Climate
Khao Sok experiences a tropical climate where temperatures usually soar, with an average maximum of 34°C, especially in March. The period from April to December is marked by frequent rainfall, with September seeing the highest precipitation. Although the rainforest comes alive between May and October with lush greenery and active water sports, the drier months from November to April provide a more comfortable hiking experience. For those who prefer minimal rain and easier trekking, the dry season is the ideal time to visit.
Below is a summary of Khao Sok’s average temperature and rainfall by month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30 °C | 30 °C | 30 °C | 31 °C | 31 °C | 30 °C | 30 °C | 30 °C | 30 °C | 30 °C | 30 °C | 30 °C |
| 27 mm | 26 mm | 58 mm | 72 mm | 163 mm | 228 mm | 234 mm | 207 mm | 213 mm | 185 mm | 63 mm | 19 mm |
Ways to Get to Khao Sok
Accessing Khao Sok National Park is relatively straightforward. While many tour operators provide transfers, independent travelers can reach the park through several transport options.
Air Travel
Travelers from Bangkok can fly into Surat Thani Airport, which is both convenient and relaxed in its atmosphere. Additionally, regular flights from Bangkok to nearby Krabi and Phuket further ease your journey, and Koh Samui—located within the same province—also serves as a potential entry point.
Train
Overnight train services run from Bangkok’s Hualamphong Station to Surat Thani’s Phun Pin station. Booking a first-class ticket is recommended for comfort, and trains typically arrive around 7:30 AM. With several train options available—from Rapid (Train 167) to Express (Train 85) and Special Express (Trains 39 and 41)—ticket prices range between 578 Baht (around 18.5 USD) and 1,839 Baht (roughly 59 USD).
Minibus/Bus/Ferry
Several minibusses operate from Phuket, Krabi, Surat Thani, Koh Samui, and Don Sak Pier directly to Khao Sok. Departure times are confirmed upon purchasing your ticket. Additionally, ferries from Samui and Koh Phangan to Don Sak Pier provide another convenient leg of the journey.
Notes for Visiting
- Always carry sufficient water with you.
- Dispose of your garbage responsibly by taking it with you to the park entrance.
- Avoid touching unfamiliar wildlife as some species may be dangerous.
- Do not explore unknown paths without a knowledgeable guide.
