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Koh Samui

Khun Si Waterfall

4.1(519 reviews)

Tucked away in the inland area of Koh Samui near Wat Thale, this waterfall offers a genuine natural escape from the island's busier coastal strips. Visitors are rewarded with at least three sets of cascading falls surrounded by lush tropical vegetation, along with deep swimming holes where the cool water provides welcome relief from the heat. Entry is free, and the site draws a noticeably quieter, more nature-focused crowd than the island's commercial tourist zones.

The hike to the falls is short and manageable — roughly ten minutes on a relatively easy trail — making it accessible for most fitness levels. A small restaurant on site adds a relaxed, charming touch for those wanting to linger after the walk. The overall atmosphere leans peaceful and unhurried, with plenty of scenery to take in along the way.

The waterfall is open daily from 06:00 to 18:00, with early morning visits offering fewer crowds. Getting there requires navigating a bumpy, steep road with cracked and uneven surfaces, so a vehicle with good clearance is advisable and cautious driving is essential. Visitors have noted that searching for Mr. Dee Chilling Hill Bar on Google Maps serves as a useful navigation landmark for parking. Water-friendly footwear with grip is strongly recommended, as the terrain can become slippery. Unleashed dogs have been reported near farms along some approach roads, so staying aware of surroundings on the way in is worthwhile.

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Experience hints

Pair your visit. After Khun Si Waterfall, round out your day in Koh Samui with contrasting stops nearby.

Reviews from Google

Khun Si Waterfall is an absolute hidden gem in Samui, offering a peaceful escape into nature. The best and easiest way to get there is by searching Mr. Dee Chilling Hill Bar on Google Maps—just park there and enjoy a short, scenic 10-minute hike to the waterfall. The trail is easy to follow and takes you through lush greenery, making the journey just as enjoyable as the destination. Once you arrive, you’ll be greeted by the serene beauty of the waterfall, perfect for cooling off and taking in the natural surroundings. But what truly makes the experience unforgettable is stopping by Mr. Dee Chilling Hill Bar before or after your hike. The food is absolutely amazing—the best we’ve had in Thailand—and the relaxed atmosphere, surrounded by beautiful gardens and great views, makes it the perfect place to unwind. Whether you're looking for an adventure or a chill spot to hang out, visiting Khun Si Waterfall via Mr. Dee’s Bar is the way to go. Highly recommended!

Easy hike, free parking, plenty to see. At least three sets of falls.

It is beautiful scenery and fun to go especially the stairs but dangerous road too many cracks, puddles, dusty and really steep. If go wrong you reach big farms which dogs are on side the road unleash and attack your scooter like what happened too me luckily locals from 2ed water fall helped me. I prefer adventure in phuket much safer road much more developed.

A sample of visitor reviews from Google. Read all 519 reviews on Google.

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Khun Si Waterfall: Frequently Asked Questions

Is Khun Si Waterfall worth visiting?

Khun Si Waterfall holds a 4.1★ rating from 519 Google reviews — a strong rating for activities & tours in Koh Samui.

What are the opening hours of Khun Si Waterfall?

Khun Si Waterfall is typically open 06:00-18:00 — see the full day-by-day schedule in the location info on this page. Hours can change on Thai public holidays, so check ahead for holiday visits.

When is the best time to visit Khun Si Waterfall?

The best months to visit Koh Samui are January – August, with the most reliable weather. Crowds peak in July – August & December — going early in the day usually means fewer people. Months to think twice about: October – December (Gulf Coast monsoon).

Where is Khun Si Waterfall located?

Khun Si Waterfall is at Wat Thale, G2F7+573 ตำบล บ่อผุด อำเภอเกาะสมุย สุราษฎร์ธานี 84320, Thailand, in Koh Samui. Getting around Koh Samui: Songthaews (fixed routes around the ring road); Motorbike or scooter rental.

Location Info

Wat Thale, G2F7+573 ตำบล บ่อผุด อำเภอเกาะสมุย สุราษฎร์ธานี 84320, Thailand
Opening Hours
Monday06:00–18:00
Tuesday06:00–18:00
Wednesday06:00–18:00
Thursday06:00–18:00
Friday06:00–18:00
Saturday06:00–18:00
Sunday06:00–18:00

Visitor Information

Best time to visit

January – August

Avoid: October – December (Gulf Coast monsoon)

Rainy season

October – December

Avg. temperature

24°C – 32°C(75°F – 90°F)

Crowds

High

Peak: July – August & December

Getting there

Koh Samui Airport (USM) has direct flights from Bangkok and regional hubs (Bangkok Airways monopoly). The ferry from Surat Thani takes ~1.5 hrs and it's cheaper.

Getting around

  • Songthaews (fixed routes around the ring road)
  • Motorbike or scooter rental
  • Taxis (metered or negotiate upfront)
  • Grab available in main areas

Where to stay near Khun Si Waterfall

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Tips for Visiting Activities & Tours

Vet Elephant Sanctuaries

Only visit sanctuaries that prohibit riding, use no chains or bullhooks, and let elephants roam freely. Elephant Nature Park in Chiang Mai set the standard. If a place offers painting shows or circus tricks, walk away.

Book Popular Activities Online

Booking platforms like GetYourGuide give you instant confirmation and, on many activities, free cancellation — and you can read recent reviews before committing. Compare with local agencies for multi-day trips where negotiation might save more.

Do Outdoor Activities in the Morning

Heat and humidity peak from noon to 3 PM. Schedule jungle treks, cycling tours, and outdoor cooking classes for early morning. Water activities are more flexible since you're in and out of the sea.

Nearby Places

Khun Si Viewpoint

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Unnamed Rd, G2F8+55W, Tambon Bo Put, Amphoe Ko Samui, Chang Wat Surat Thani 84320, Thailand

Getting up there is half the point, but only on a decent scooter or a proper 4x4.

Mr. Dee Chilling Hill Bar

Mr. Dee Chilling Hill Bar

5.0(364)
G2C8+MC, Bo Put, Ko Samui District, Surat Thani 84320, Thailand

A hilltop daytime bar and activity venue in Bo Put offering elevated views, drinks, and a relaxed atmosphere.

Treetop Tour Zipline

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A morning in the jungle canopy, cable by cable, for anyone who's had enough of lying on sand.

Mountain Jungle Tour

Mountain Jungle Tour

5.0(267)
G265+J4H, Bo Put, Ko Samui District, Surat Thani 84320, Thailand

A guided jungle tour experience in Koh Samui's mountain interior, featuring ziplining, scenic dining, and knowledgeable local guides.

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