TL;DR: Pai has three waterfalls worth planning around. Mo Paeng, about 9km west of town (~20 minutes by scooter), is the swimming and rock-slide favourite, with several tiered pools; most current guides say entry is free, though a few older reports cite ฿100. Pam Bok, about 8km southwest (~20 minutes by scooter), charges a more consistently reported ฿200 (~US$6) national park day-pass fee and involves a short 10-minute jungle walk from the car park into a rocky canyon. Mae Yen is the odd one out: no scooter gets you there, it’s a roughly 6km, 2-3 hour trek each way from a trailhead near Wunderland Camping (about 10 minutes north of town by scooter), crossing the river dozens of times before reaching a 30-metre drop with a swimmable pool at the base; it’s generally free, though some hikers report being asked for a ฿300 fee at the trailhead. All three run fullest during and just after the June-October rainy season, and Mae Yen’s river crossings are safest attempted in the drier months. All prices ฿33 = US$1 (July 2026).
Anyone searching “Pai waterfalls” is usually trying to work out which of three very different places to actually visit: a scooter-accessible swimming spot with a rock slide, a short canyon walk with a park fee, or a proper multi-hour jungle trek. They’re not interchangeable, and picking the right one depends on how much walking you want to do and whether you’re after a quick dip or a full day out. This guide breaks down Mo Paeng, Pam Bok and Mae Yen, what each is actually like, current fees, and how to reach them, checked against 2026 visitor guides sourced at the end.
Pai’s three waterfalls compared
| Mo Paeng | Pam Bok | Mae Yen | |
|---|---|---|---|
| Distance from Pai | ~9km west | ~8km southwest | ~6km trek (trailhead ~3km north) |
| How to reach | Scooter, ~20 min | Scooter, ~20 min, then 10-min walk | Scooter to trailhead, then 2-3hr hike each way |
| Entry fee | Mostly reported free; some cite ฿50-100 | ~฿200 (~US$6) day pass | Generally free; some report a ฿300 trailhead charge |
| What it’s like | Tiered pools, natural rock slide | Rocky canyon, short walk in | 30m waterfall, dozens of river crossings |
| Best for | Swimming, casual half-day | Quick stop, photos | A real hike, fewer crowds |
Fees and distances compiled from 2026 visitor guides; see Sources. Prices at ฿33 = US$1 (July 2026).
Mo Paeng Waterfall: the swimming and rock-slide spot
Mo Paeng is the easiest and most popular waterfall near Pai, built for an afternoon of swimming rather than a quick look. It’s about 9km west of town, roughly a 20-minute scooter ride, with parking right by the falls and no serious walk-in required. The waterfall spreads across several tiers, so there’s more than one pool to swim in, and the standout feature is a natural rock slide further downstream, where the water runs over smooth, flat rock into a pool below, popular enough that it’s the main reason a lot of visitors make the trip.
Entry cost is one area where sources disagree: most current 2026 guides describe it as free, with visitors simply parking in a designated area, while a smaller number of older write-ups mention a ฿50-100 fee. Treat it as likely free but bring a little cash just in case a collector is on site the day you visit.
Pam Bok Waterfall: the short canyon walk
Pam Bok trades Mo Paeng’s swimming pools for a shorter, more scenic walk into a rocky canyon. It sits about 8km southwest of Pai, also roughly a 20-minute scooter ride, with parking at a car park in front of the falls. From there it’s about a 10-minute walk along a scenic jungle trail before the trail descends into the canyon where the waterfall sits. Entry runs around ฿200 (~US$6), reported more consistently across sources than Mo Paeng’s fee, and covers a day of access to the surrounding national park area. If you’re not up for a scooter, a songthaew can also get you there.
Mae Yen Waterfall: the trek
Mae Yen is a genuine hike, not a scooter stop, and it filters out most of the day-tripper crowd by virtue of the effort required. The trailhead sits beside Wunderland Camping, about 10 minutes north of Pai by scooter (head north on Route 1095 toward Pai Canyon, then follow signs onto the unnamed road leading to the trail start). From there it’s roughly 6km each way, taking most hikers about 2-3 hours in each direction depending on fitness and pace.
The trail itself is mostly flat and manageable, with a steep final stretch near the waterfall that needs some care. The bigger factor is the river: guides estimate three dozen or more crossings along the route, so wet feet are guaranteed regardless of season, and the crossings become genuinely more hazardous when the river is running high. The reward at the end is a roughly 30-metre waterfall with a shallow pool at the base suitable for cooling off, plus a smaller waist-height pool higher up that requires a careful, slippery scramble up the right side to reach.
Entry is generally described as free, though some hikers report being approached for a ฿300 per-person fee at the trailhead, with no clear official basis for it across the sources checked. Bring cash regardless, and treat the hike as a half-day-plus commitment: 4-6 hours round trip once you factor in time at the waterfall itself.
When is the best time to visit Pai’s waterfalls?
Rainy season (June-October) brings the fullest water at all three falls, at the cost of muddier trails and more slippery rocks. This is when Mo Paeng’s rock slide has the most water running over it and Pam Bok’s pools are at their deepest, but it’s also when Mae Yen’s river crossings turn from an ankle-deep wade into something that needs real caution, since a swollen river crossing is a genuine hazard rather than an inconvenience. Cool season (November-February) has lower water levels across all three but far easier, drier trail conditions, particularly relevant if you’re planning the Mae Yen trek specifically. If swimming volume matters most to you, aim for shortly after the rains; if trail safety and easy footing matter more, go in the cooler, drier months.
How to get to each waterfall
- Mo Paeng: Ride west from Pai for about 9km (~20 minutes); parking is right by the falls, no walk-in needed. Scooter rental in Pai starts from around ฿150 per day.
- Pam Bok: Ride southwest for about 8km (~20 minutes) to the car park, then walk roughly 10 minutes down a jungle trail into the canyon.
- Mae Yen: Ride north for about 10 minutes to the trailhead beside Wunderland Camping, then hike roughly 6km (2-3 hours) each way. There’s no vehicle access beyond the trailhead.
Honest downsides
- Mo Paeng’s rocks get genuinely slippery, especially on the slide and around the pools after rain; footwear with real grip matters more here than most people expect.
- Mae Yen’s river crossings are not optional. If you’re not comfortable getting your feet wet repeatedly, or the river is running high, this isn’t the waterfall for you that day.
- Fee inconsistency across all three sites means you can’t fully plan your cash needs in advance; carry more small notes than you think you’ll need.
- None of the three have real facilities beyond a car park and maybe a snack stall or two. Bring your own water, especially for the Mae Yen trek, where there’s nothing to buy along the trail.
Bottom line
If you want an easy, scooter-accessible swim with a proper slide, go to Mo Paeng. If you’d rather a shorter scenic walk with a modest, predictable fee, Pam Bok fits a half-day loop well, especially combined with the nearby Land Split. If you want a real hike away from the day-tripper crowd, budget half a day for Mae Yen and go in the drier months if the river crossings worry you. All three pair naturally with a wider look at things to do in Pai, and since water levels and trail conditions shift by season, check the best time to visit Pai before you pick your dates. Browse what’s on in Pai to build the rest of your day around a live event rather than guesswork.
Sources
- Mo Paeng Waterfall in Pai, Thailand: A Complete Guide (Jonny Melon): Mo Paeng entry fee, distance, directions, rock slide description
- Mo Paeng Waterfall - Slippery Rocks & Swimming Pool, Pai Thailand (Chiang Mai Travel Hub): Mo Paeng fee cross-reference, swimming pools
- How to Visit Pam Bok Waterfall in Pai & What to Expect (We Seek Travel): Pam Bok entry fee, distance, directions, walk-in time
- Pambok Waterfall In Pai - Complete Guide (Jonny Melon): Pam Bok canyon walk description
- How to Hike to Mae Yen Waterfall in Pai (We Seek Travel): Mae Yen distance, time, river crossings, entry fee ambiguity, trailhead directions, best season
- Mae Yen Waterfall - Distance & How to Get there from Pai, Thailand (Chiang Mai Travel Hub): Mae Yen distance and directions cross-reference
- 3 Breathtaking Waterfalls In Pai (Cat Motors): overview comparison of all three waterfalls