Top 10 Waterfalls in Thailand
Thailand's waterfall season runs in step with the monsoon: the southwest monsoon, which arrives in the south and west from May and the north from June, charges rivers and transforms seasonal trickles into substantial cascades. By February and March, most non-glacial falls in Thailand carry minimal flow. Planning around this cycle is the key to waterfall travel in the country. All ten are on the map.
1. Erawan Falls, Kanchanaburi
Erawan Falls in Erawan National Park, Kanchanaburi Province, is seven tiers of travertine-built cascades on the Huai Mae Khamin River, producing turquoise pools popular for swimming. The colour comes from calcium carbonate precipitation on the riverbed. The lower three tiers are the most visited and swimmable; the upper four require a 1.5-kilometre trail. The park enforces no-food rules in the water and limits visitor numbers in the pools. Best flow: September to November. Type: tiered cascade. Entry by vehicle from Kanchanaburi, 65 km.
2. Huay Mae Khamin Falls, Kanchanaburi
Huay Mae Khamin in Sai Yok National Park is a seven-tiered waterfall on a tributary of the Kwai River, often compared to Erawan but somewhat less visited. The same travertine chemistry produces clear blue-green water. A 3-kilometre trail links the tiers; swimming is permitted in the lower pools. Best flow: September to November. Type: tiered cascade.
3. Thi Lo Su Falls, Tak Province
Thi Lo Su in Umphang Wildlife Sanctuary in Tak Province near the Myanmar border is Thailand's largest waterfall by volume and width — approximately 400 metres wide and 200 metres tall at full flow. The waterfall is in a remote protected area accessible only from August to October (after the rains start but before the forest roads deteriorate). The approach is a 45-kilometre drive on rough mountain track from Umphang, with a 3-kilometre walk to the base. Type: tiered cataract. Dry season: reduced to a fraction of full-flow width.
4. Mae Surin Falls, Mae Hong Son
Mae Surin Falls in Mae Surin National Park, Mae Hong Son Province, is a single-drop plunge of approximately 100 metres — among the tallest single-drop falls in Thailand — visible from a cliff-edge viewpoint reached by a 1.5-kilometre trail from the car park. The falls face east and are best photographed in the morning. Best flow: October to December. Type: plunge.
5. Mae Klang Falls, Chiang Mai
Mae Klang Falls at the entrance to Doi Inthanon National Park near Chom Thong is a broad multi-tiered cascade on the Mae Klang River — the most accessible waterfall in Thailand's highest mountain park. A paved path leads to multiple viewpoints. Year-round flow (Doi Inthanon's elevation produces orographic rainfall throughout the year); best October to December. Type: cataract.
6. Wachirathan Falls, Chiang Mai
Wachirathan Falls, 21 kilometres inside Doi Inthanon National Park, drops approximately 70 metres in a powerful cataract — the most dramatic individual fall inside the park. The car park and viewpoint are directly at the base. Year-round flow; best October to January. Type: cataract.
7. Pa La-U Falls, Prachuap Khiri Khan
Pa La-U Falls in Kaeng Krachan National Park near Hua Hin is an eleven-tier waterfall on a forested stream in the southern reaches of the park. The lower six tiers are accessible on a 3-kilometre trail; the upper five require an additional hour of hiking. Best flow: October to December. The surrounding forest is excellent for birdwatching. Type: tiered cascade.
8. Mae Sa Falls, Chiang Mai
Mae Sa Falls on the Mae Sa River northwest of Chiang Mai in the Mae Sa Valley is a ten-tier waterfall in an easily accessible national park reserve, popular as a day trip from Chiang Mai (30 km). Each tier has a car park access point and short path. Year-round flow; best September to November. Type: tiered cascade.
9. Haew Narok Falls, Nakhon Ratchasima
Haew Narok (Hell Cliff) in Khao Yai National Park is a two-tier falls dropping 150 metres in total, with the main upper drop of 80 metres — one of the most powerful falls in the northeast. This is one of the waterfalls visited by a group in the film "The Beach" during its opening scenes (partially shot in Khao Yai). Best flow: July to October. A 1-kilometre trail from the car park. Type: tiered plunge.
10. Haew Suwat Falls, Nakhon Ratchasima
Haew Suwat Falls, also in Khao Yai National Park, drops 25 metres into a wide pool — the swimming-pool-clear pool at the base is one of the most photogenic in Thailand. This is the specific waterfall shown in the "The Beach" (2000), in the scene where Leonardo DiCaprio's character jumps from the lip. Jumping is now prohibited. Best flow: July to October. Type: plunge.
Planning a Thailand waterfall trip
Western Thailand (Kanchanaburi — Erawan, Huay Mae Khamin) and northern Thailand (Chiang Mai — Doi Inthanon falls, Mae Sa) are the two main clusters; Umphang's Thi Lo Su requires a dedicated multi-day trip from Tak or Chiang Mai. The monsoon window from September to November gives the best combination of full flow and accessible roads; February and March produce disappointingly low flow at most sites. Khao Yai is reachable as a day trip from Bangkok in the rainy season.
Erawan in detail
Erawan National Park requires an early start from Kanchanaburi (65 km, about 90 minutes). The park entrance fee includes access to all seven tiers; the upper tiers require a further entry fee and proof of physical fitness (a nominal formality). The national park limits daily visitor numbers to the pools from October to May on weekends — advance online booking through the Thailand National Parks portal is required. The turquoise colour of the pools is the result of calcium carbonate supersaturation in the Huai Mae Khamin River as it percolates through limestone bedrock; the travertine dams that create the pool edges grow slowly over decades. Visitors are asked not to use sunscreen before entering the pools as chemical contamination harms the travertine biology.
Doi Inthanon as a waterfall circuit
Doi Inthanon National Park, at 2,565 metres Thailand's highest mountain, receives orographic rainfall year-round from northeast and southwest monsoons. The falls inside the park — Mae Klang (park entrance), Siriphum (near the summit road at 1,400 m), and Wachirathan — are on the main summit road and accessible as a one-day circuit from Chiang Mai (90 km). The park summit area hosts the royal chedis and a ranger station with weather monitoring; temperatures near the summit can be below 10°C in December to February, cold by Thai standards. Year-round access but best falls from October to January after the monsoon. All Thai falls are on the map.
Thi Lo Su and the Umphang wilderness
Thi Lo Su in Umphang Wildlife Sanctuary is one of the least-visited major waterfalls in Southeast Asia despite being Thailand's largest by volume. The sanctuary is a remote 4,500-square-kilometre reserve protecting Karen minority villages, old-growth forest, and the Khwae Yai River headwaters. The 45-kilometre track from Umphang to Thi Lo Su requires a local guide (mandated by the sanctuary management), a 4WD vehicle, and one night of camping. The waterfall stretches 400 metres across multiple curtains of white water over a limestone shelf, dropping roughly 200 metres to a pool at the base. At its fullest in September and October the combined flow is among the highest for any single waterfall in Thailand. The sanctuary is open from August to late October; early in the season the track may still be impassable after very heavy rain and a local guide's current-conditions assessment is essential before setting out from Umphang.