How much does it cost to visit Than Sadet waterfall?

Budget around ฿100 (~US$3) per person, charged at the entrance area near the beach and lower waterfall as part of the Than Sadet-Ko Pha-ngan National Park. Bring cash in small notes, since there's no guarantee of card payment this far out from Thong Sala. Children's pricing isn't consistently listed, so ask at the entrance if you're travelling with kids.

What are the royal inscriptions at Than Sadet?

King Rama V (Chulalongkorn) first visited the waterfall in 1888, gave it its name (Than Sadet means 'royal stream'), and returned as many as 14 times over the following 21 years, carving his initials into a large rock near where the river meets the sea. Later Thai monarchs, including Rama IX, are also recorded as having left inscriptions on rocks further along the riverbed during their own visits. For Phangan locals, the river carries genuine spiritual weight because of this royal history, not just scenic value.

How do you get to Than Sadet waterfall?

By scooter or car, follow the road toward Than Sadet Beach on the island's east side; a concrete road now runs most of the way down with parking along the route, an improvement on the rough dirt track of a few years ago. Without your own transport, a shared taxi from Thong Sala runs roughly ฿300 (~US$9) per person, or you can take the Thong Nai Pan Express boat, which departs daily around 9am. Once you're there, the falls form a roughly 2.5km run of cascades and rock pools, so plan on a half-day if you want to walk the full length.

Is Phaeng or Than Sadet the better waterfall to visit?

Phaeng is the easier, more convenient choice, about 4km from Thong Sala, well signposted, with a proper entrance area and marked hiking loops from 30 minutes to 1.5 hours. Than Sadet takes more effort to reach and has less infrastructure, but it holds water for more of the year and comes with the royal history that Phaeng doesn't have. If you only have time for one and convenience matters, pick Phaeng; if the history and a longer trek matter more, go to Than Sadet.

What's the entrance fee for Wang Sai waterfall?

About ฿50 (~US$1.50) per adult. Wang Sai sits near Mae Haad on the island's northwest side, about a 15-minute signposted walk from the entrance shared with a nearby zipline attraction. It's a cascading, multi-level fall with a landscaped lower pool that holds water more reliably outside the wet season than Phaeng or Paradise, which makes it a reasonable backup if you're visiting in the dry months.

When is the best time to visit Koh Phangan's waterfalls?

The wet season, roughly May to October, is when all four falls run at their fullest, with September and October in particular season often producing the heaviest flow after sustained rain. Than Sadet is the one exception worth knowing about: it holds water for most of the year, even in the driest stretches, so it's a safer bet if you're on the island between January and April and still want to see real water rather than damp rock.

Is Paradise Waterfall worth the trip?

Only in the wet season. Paradise sits about five minutes past Phaeng on the Chaloklum road, and it splits into two parts: an easy-access lower pool popular with local kids on a rope swing, and the actual waterfall roughly 40 minutes further into the jungle. In the dry season the falls themselves can be reduced to almost nothing, so it's worth checking recent conditions or asking locally before making the extra trek.

Do I need a 4WD to reach these waterfalls, or is a scooter enough?

A scooter is enough for Phaeng and Wang Sai, both of which have proper parking areas close to a sealed or well-graded road. Than Sadet is the exception: while the concrete road down to Than Sadet Beach has improved access significantly, some connecting stretches can still be rough, so go carefully on a scooter in the wet season or consider a taxi if you're not a confident rider on uneven or slippery roads.

Koh Phangan Waterfalls 2026: Than Sadet, Phaeng, Wang Sai

TL;DR: Koh Phangan’s three main waterfalls sit inland off the Chaloklum-Thong Nai Pan road: Than Sadet, a 2.5km run of royal-linked pools with a ฿100 (~~US$3) national park entrance fee, reachable by scooter, shared taxi (~~฿300/~$9) or the daily 9am Thong Nai Pan Express boat; Phaeng, the easiest to reach at about 4km from Thong Sala with a ฿100 adult/฿50 child fee and hikes ranging from a 30-minute easy loop to a 1.5-hour full circuit; and Wang Sai, a landscaped cascade near Mae Haad with a ฿50 entrance fee and a 15-minute walk in. All three run fullest in the wet season, roughly May to October, and thin out badly by March and April. Than Sadet’s real draw is history as much as water: King Rama V visited 14 times between 1888 and 1909 and carved his initials into a boulder near the river mouth, and later monarchs added their own royal monograms to rocks further along the same riverbed. Paradise Waterfall, a short walk past Phaeng, only really runs in the wet months and gets skipped by most visitors in the dry season. All prices ฿33 = US$1 (July 2026).

Koh Phangan isn’t only beaches and Full Moon Parties. Once you get off the coast road and up into the hills, the island has a genuine cluster of jungle waterfalls, and one of them, Than Sadet, comes with a piece of Thai royal history most visitors never hear about. This guide covers Than Sadet, Phaeng, Wang Sai and the smaller Paradise Waterfall: what each one costs to enter, when to go, how to get there, and which are actually worth the trip outside the wet season. Every fee, distance and timing below is checked against current 2026 visitor listings and national park sources, listed at the end.

Than Sadet: the royal waterfall

Than Sadet is the one waterfall on Koh Phangan with a real story attached, and it’s the reason to make the longer trip out to the island’s east side. King Rama V visited the site for the first time in 1888, named it (Than Sadet translates roughly to “royal stream”), and came back as many as 14 times over the following 21 years, right up until 1909. He carved his initials into a large granite boulder near where the river empties into the sea, and later Thai monarchs, including Rama IX, are recorded as having added their own inscriptions on rocks further along the same riverbed during their own visits. Locals still refer to the river as sacred, and it’s genuinely used in royal ceremonial contexts, not just marketed that way for tourists.

The falls themselves form a roughly 2.5km run of cascades and pools along Than Sadet stream, so you can walk as little or as much of it as you like from the beach end. Entry costs around ฿100 (~US$3) per person, collected at the entrance area near the beach and the lower falls as part of the Than Sadet-Ko Pha-ngan National Park, which covers about 43 sq km across the island’s interior. A concrete road now runs most of the way down to Than Sadet Beach with parking along the route, a real improvement on the rougher dirt track of a few years back, though some connecting stretches can still get rough, especially in the wet season.

How to get there: by scooter or car via the road out to Than Sadet Beach on the east coast; by shared taxi from Thong Sala for roughly ฿300 (~US$9) per person; or by the Thong Nai Pan Express boat, which runs daily around 9am and drops you close to the trailhead.

Phaeng waterfall: the easiest to reach

If you want a waterfall without the drive, Phaeng is the practical choice. It sits only about 4km from Thong Sala, a 5-10 minute ride past the Madue Wan area, well signposted the whole way, with a proper parking zone at the entrance. Entry runs about ฿100 (~US$3) for adults and ฿50 (~US$1.50) for children, and the park gates operate roughly 8am to 4:30pm daily.

Phaeng also gives you options depending on how much walking you want to do. The easy version, a loop to Phaeng Noi and Phaeng Yai, takes about 30 minutes round trip and works fine in sandals if the rocks aren’t too slick. Push on toward the Dom Sila viewpoint and you’re looking at closer to 50 minutes on steeper ground, while the full loop, which strings together several smaller cascades, runs 1 to 1.5 hours over wooden stairs and tree-root steps that get slippery when wet. The site sits inside Than Sadet National Park and has a loose connection to King Rama IX’s 1987 visit tied to his 60th birthday celebrations, though it doesn’t carry the same weight of royal history as Than Sadet itself.

Wang Sai waterfall: the easy, family-friendly option

Wang Sai is the low-effort pick, and the one most likely to still have water if you’re visiting outside the wet season. It sits near Mae Haad on the island’s northwest coast, about a 15-minute signposted walk from an entrance shared with a nearby zipline attraction. Entry costs around ฿50 (~US$1.50) per adult.

The falls run in tiers over boulders, and at some levels the water takes on a distinctive pale blue tint from limestone sedimentation in the stream, which photographs well and is a genuine point of difference from the other falls on the island. Part of the site has also been landscaped with a built pool area, which is exactly why it holds up better than Phaeng or Paradise in the dry months, even if it means the experience feels less “wild jungle” and more “managed attraction.” It’s a reasonable choice with kids or if your schedule only allows a short stop.

Paradise Waterfall: the wet-season bonus

Paradise is worth the short detour from Phaeng, but only when there’s been real rain recently. It sits about five minutes further along the Chaloklum road from Phaeng; look for the turn just past Kika Splace restaurant. The site splits into two sections: a lower pool that’s an easy, flat walk in and popular with local kids swinging on a rope tied to the trees overhead, and the actual waterfall, which takes roughly 40 minutes of jungle trekking further in to reach. In the dry season the upper falls can shrink to almost nothing, so it’s worth asking locally about recent rainfall before committing to the longer walk.

Koh Phangan waterfalls compared

Waterfall	Entry fee	Distance/access	Best season	Effort
Than Sadet	~฿100 (~US$3)	East coast; scooter, taxi (~฿300) or 9am boat	Year-round, best May-Oct	Half-day if walking the full 2.5km
Phaeng	~฿100 adult / ฿50 child	~4km from Thong Sala, sealed access road	May-Oct (wet season)	30 min easy loop up to 1.5 hr full loop
Wang Sai	~฿50	Near Mae Haad, 15 min walk from entrance	Year-round (landscaped pool)	Easy, short walk
Paradise	No widely reported separate fee	5 min past Phaeng, off Chaloklum road	Wet season only	Easy pool; ~40 min to the falls proper

Fees and access details compiled from current waterfall and national park visitor listings; see Sources. All prices ฿33 = US$1 (July 2026).

Best time to visit

Go in the wet season, roughly May to October, if seeing real water flow matters to you. September and October in particular tend to bring the heaviest flow after sustained rain. Than Sadet is the exception worth remembering: it holds water for most of the year, even through the driest stretches, so if you’re on the island between January and April and still want a waterfall with actual water rather than damp rock, that’s the one to prioritise. Phaeng and Paradise both thin out badly by March, and Paradise’s upper falls in particular can all but disappear.

What to bring

Cash in small baht notes for entrance fees, since card payment isn’t reliable this far from Thong Sala
Proper footwear with grip, not flip-flops, for the rockier and root-step sections at Phaeng and Than Sadet
A dry bag or waterproof phone pouch if you’re swimming in any of the pools
Insect repellent, since all four sites involve some jungle walking
A rented scooter or a pre-arranged taxi, since none of these are realistically walkable from town

Honest downsides

Dry-season disappointment is real. Show up in February or March expecting the postcard photos and you may find Phaeng or Paradise reduced to a trickle. Than Sadet is the safer bet outside the wet months.
Than Sadet takes real effort. The east-coast location and rougher stretches of road mean it’s not a quick stop; budget half a day if you want to see much of the 2.5km run.
Wang Sai’s landscaping cuts both ways. The built pool keeps water flowing year-round, but it also means a less wild, more managed feel than Phaeng or Than Sadet.
Signage and info at the sites themselves is inconsistent. Fees and hours can shift without much notice, so treat the numbers here as a solid planning baseline and confirm locally if something seems off on the day.

Bottom line

For most visitors, Phaeng is the easy default: close to Thong Sala, clearly marked trails, and a real entrance area. Than Sadet is worth the extra effort specifically for the royal history and its more reliable year-round flow, while Wang Sai suits a short, low-commitment stop, especially with kids. Paradise only makes sense in the wet season. Pair a waterfall day with a wider look at things to do on Koh Phangan, check Koh Phangan’s beaches if you want to combine the trip with a coastal stop, and see where to stay on Koh Phangan and how to get to Koh Phangan if you’re still planning the rest of the trip. Check what’s on for anything else happening on the island while you’re there.

Sources

Thailand Life: Than Sadet in Koh Phangan: Than Sadet entrance fee (฿100 per person), improved concrete road access, best-season timing, Rama V inscription details
Wikipedia: Than Sadet-Ko Pha-ngan National Park: park establishment date (2018), park area (43 sq km), Rama V’s 14 visits between 1888-1909, river length (2.5km)
3 Angels Thailand Living: Than Sadet Waterfall - The Royal Stream of Koh Phangan: royal monogram inscriptions from Rama V, Rama VII and Rama IX, historical visit details
Nomad Mum: Phaeng Waterfall Hike in Koh Phangan: Phaeng entrance fee (฿100 adult/฿50 child), hours, hike route options and durations, distance from Thong Sala
Girl Gone Coconuts: The 5 Best Waterfalls in Koh Phangan: Wang Sai entrance fee (฿50), Phaeng Noi fee confirmation, Than Sadet access description, hours for each site
Thailandee: Wang Sai Waterfall in Koh Phangan: Wang Sai entrance fee, limestone blue-water detail, access description
Go Find Orient: Waterfalls on Koh Phangan: Paradise Waterfall access via Chaloklum road, two-section layout, dry-season flow warning

Koh Phangan Waterfalls: Than Sadet, Phaeng and Wang Sai Guide