Thailand 
In numbers.
20m
Height
OpenStreetMap
1.9m³/s
Average flow
estimate
Jul–Oct
Best months
374kW
Water power
estimate
The water at Nam Tok Heo Suwat, month by month
It roars in September.
The fullest months: September. The thinnest: from December to April.
- 0.4 m³/sJan
- 0.4 m³/sFeb
- 0.6 m³/sMar
- 1.1 m³/sApr
- 2.4 m³/sMay
- 3.2 m³/sJun
- 3.9 m³/sJul
- 4.6 m³/sAug
- 6.2 m³/sSep
- 4.7 m³/sOct
- 2.1 m³/sNov
- 0.7 m³/sDec
From about 0.40 m³/s in the lowest month to 6.2 m³/s in the highest. Best months to go, with plenty of water and pleasant days: from July to October.
Estimate: the timing comes from rain, snowmelt and evaporation (NASA POWER, 1991–2020); the amounts from the river model of HydroATLAS (WaterGAP, 1971–2000). Dams upstream can change the real flow.
Nam Tok Heo Suwat is a waterfall in Thailand. The water falls 20 m.
Getting there.
- Parking 100 m awaynearest car park in OpenStreetMap, straight line
- Don Mueang International Airport (DMK)nearest airport with scheduled flights · 105 km in a straight lineCar hire at DMK airport (Bangkok)Discover Cars · Affiliate link↗
- From July to Octoberbest months to go (estimate)
Plan your visit
Stay, explore and get there
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
How big is it?
How big it really is.
Height of the drop as mapped in OpenStreetMap (© OpenStreetMap contributors). Buildings and the person are drawn at the same scale.
374 kW
About 1.9 m³/s falling 20 m: the power of the water as it drops.
- enough to power about 93 homes, if it were all turned into electricity
Power of falling water = density × gravity × flow × height. Average flow and height as shown above; an estimate.
Seen from the sky.
8 × 8 km of cloud-free satellite image, with what OpenStreetMap knows around the falls.
N
2 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 8 × 8 km, north up. Points © OpenStreetMap contributors.
The line follows the river as mapped in OpenStreetMap; heights from the 30 m Copernicus model, which smooths narrow drops — the published height of the falls is the one above.
Around the falls the river drops 115 m in 3.6 km. Here the river runs about 61 m below the lower rim of its valley.
What is around.
- 2viewpoints
- 2waymarked walking routesเส้นทางศูนย์บริการนักท่องเที่ยว - น้ำตกเหวสุวัต, น้ำตกผากล้วยไม้ - น้ำตกเหวสุวัต
- 4car parks
- —swimming spots
- —picnic sites
- 2toilets
- 1information boards and visitor centres
- —bus stops within 1 km
- 3other named waterfalls within 4 kmน้ำตกกล้วยไม้, น้ำตกเหวประทุน, น้ำตกเหวไทร
- —caves
- 2campsitesจุดกางเต็นท์ผากล้วยไม้, Lam Ta Khong Campingground
- 7hotels, B&Bs and huts within 6 km407/1 - 9, 402, 401 and 4 more
- 3restaurants and cafés within 3 km
Counted in OpenStreetMap, the map anyone can edit, up to 2 km around the falls (unless noted). A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Weather
The weather, month by month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon °C | 27 | 30 | 31 | 32 | 29 | 27 | 27 | 26 | 26 | 26 | 26 | 25 |
| Night °C | 15 | 17 | 20 | 21 | 21 | 21 | 20 | 20 | 20 | 19 | 17 | 15 |
| Rain & snow (mm) | 12 | 13 | 48 | 82 | 168 | 178 | 201 | 229 | 306 | 167 | 25 | 6 |
| Wet days | 2 | 3 | 8 | 14 | 22 | 24 | 24 | 26 | 27 | 20 | 5 | 2 |
| Sun h/day | 7.7 | 7.4 | 6.9 | 7.2 | 6.5 | 6.1 | 5.6 | 4.9 | 4.9 | 5.6 | 7.0 | 7.8 |
Long-term averages 1991–2020 (NASA POWER) for a cell about 55 km wide, with temperatures carried to the height of the falls (632 m) at −6.5 °C per 1,000 m. Not a forecast.
Photos
Through visitors' eyes.
Recent years
Wet years and dry years
Rain of each month as a share of the 1991–2020 average. A wet season above 100 % usually means a fuller waterfall.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 10% | 7% | 59% | 88% | 79% | 163% | 108% | 113% | 120% | 188% | 45% | 15% |
| 2021 | 0% | 93% | 42% | 264% | 70% | 76% | 151% | 98% | 119% | 135% | 81% | 145% |
| 2022 | 105% | 377% | 182% | 116% | 173% | 62% | 147% | 161% | 156% | 82% | 266% | 40% |
| 2023 | 69% | 94% | 5% | 60% | 65% | 116% | 113% | 100% | 128% | 128% | 149% | 95% |
| 2024 | 3% | 7% | 122% | 19% | 130% | 97% | 147% | 102% | 125% | 104% | 71% | 5% |
| 2025 | 26% | 42% | 108% | 167% | 220% | 99% | 97% | 100% | 144% | 75% | 300% | 85% |
130% wetter than usual 70% drier than usual
Compare with the waterfalls nearby.
Nam Tok Heo Suwat
Thailand
- 20 mHeight
- 1.9 m³/sAverage flow
- Jul–OctBest months
About these numbers
| Names, height, width, river | Wikidata (Q34845999) · CC0 |
|---|---|
| Height of the drop | © OpenStreetMap contributors · ODbL |
| River flow and catchment | HydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0 |
| Climate | NASA POWER, 1991–2020 |
| Relief, river profile, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Paths, viewpoints, parking | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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