TL;DR: Thailand’s best hot springs are San Kamphaeng and the Pong Dueat geyser near Chiang Mai, Tha Pai and Sai Ngam in Pai, Raksawarin in Ranong, Klong Thom’s hot waterfall in Krabi, and Hin Dat in Kanchanaburi, and foreign entry runs from free to about ฿400 (US$0-12). The north gives you developed geothermal parks, scalding source pools and the egg-boiling ritual; the south gives you free public soaking in Ranong and, at Klong Thom, a warm cascade you actually sit inside. Most gates are cash-only and fees change without notice, so treat every figure here as a planning range. All prices ฿33 = US$1 (July 2026).
Thailand’s geothermal activity runs down the western side of the country, which is why hot springs turn up in the northern mountains, along the Myanmar border in Kanchanaburi, and all the way down the Andaman coast to Ranong and Krabi. They range from manicured municipal parks with ticket booths and coffee shops to a rocky jungle stream with a fee collector and nothing else. This guide covers the ones worth planning a day around, what each costs for foreign visitors as of July 2026, how hot the water really is, and the etiquette nobody tells you until you get it wrong. Prices are in Thai baht with US dollars at ฿33 = US$1 (July 2026), given as ranges because gate fees at Thai natural sites shift without announcement.
Thailand hot springs compared
| Hot spring | Where | Foreign entry (July 2026) | Can you soak? | Best for |
|---|---|---|---|---|
| San Kamphaeng Hot Springs | Mae On, ~34km E of Chiang Mai | ~฿100 (US$3), mineral pools ~฿50 extra, private rooms ~฿200-300 | Yes, in the separate mineral pools and foot baths | Geysers, egg boiling, a half-day out from Chiang Mai |
| Pong Dueat Geyser | Huai Nam Dang NP, between Chiang Mai and Pai | ~฿300 (US$9) adult, ~฿150 child, plus ฿20-30 vehicle | No, viewing only | Seeing an actual geyser on the Pai road trip |
| Tha Pai Hot Spring | ~8km S of Pai, Huai Nam Dang NP | ~฿300 (US$9) | Yes, in the cooler downstream pools (34-42°C) | Egg boiling and easy paved access |
| Sai Ngam Hot Spring | ~17km N of Pai | Sanctuary permit, ~฿200 (US$6) adult most commonly reported | Yes, genuinely swimmable (~34-36°C) | A long, proper swim in a jungle stream |
| Raksawarin Hot Springs | ~2km E of Ranong town | Free public park; ~฿40 (US$1.20) private area | Yes, plus free foot soaking | Free soaking in 65°C sulfur-free mineral water |
| Klong Thom Hot Springs | Khlong Thom, ~1hr SE of Krabi Town | ~฿90-200 (US$3-6) adult, varies by source and ticket | Yes, in the cascade and pools (35-42°C) | Sitting in a warm waterfall |
| Hin Dat Hot Spring | Thong Pha Phum, Kanchanaburi | ~฿60 (US$1.80) adult reported | Yes, plus a cold stream alongside | Cheap, rustic hot-cold dipping on a road trip |
Fees compiled from official Thai government listings and current 2026 operator and visitor guides; see Sources. Thai nationals pay a lower rate at nearly every site. Confirm at the gate, most take cash only. ฿33 = US$1 (July 2026).
Which hot spring should you visit near Chiang Mai?
San Kamphaeng Hot Springs, about 34km east of the city in Mae On, is the default choice, and it’s a developed geothermal park rather than a wild spring. Thailand’s official government tourism listing describes the site as having “2 springs rising about 20 meters high with the temperature higher than 100 degrees Celsius”, which is why the jets are fenced and the bathing happens elsewhere on the grounds. Foreign visitors are reported at around ฿100 (US$3) at the gate as of 2026, with the mineral bathing pools roughly ฿50 (US$1.50) more and private mineral bath rooms in the ฿200-300 (US$6-9) range. Opening hours are commonly listed as about 7am or 8am to 6pm.
The combination is what earns the drive: geysers, communal soaking pools, long foot-soak channels where hot water runs through open stone gutters, and the egg stalls. There’s no direct public transport, so plan on a Grab, a rental car or a day tour, and pair it with Mae Kampong village to justify the trip east.
If you’d rather soak in private, Roong Aroon Hot Springs Resort sits in the same Mae On geothermal pocket and pipes spring water into its own baths. Day-use bathing prices aren’t published consistently, so call ahead rather than turning up; hotel listings show rooms from around ฿2,000 (US$61) a night as of July 2026.
Further north, Pong Dueat Geyser inside Huai Nam Dang National Park is the stop on the Chiang Mai to Pai road. Current park listings put foreign entry at ฿300 (US$9) for adults and ฿150 for children, plus a small vehicle fee. It’s a boardwalk-and-viewing-platform site, so go for the steam and spray rather than a soak.
What are Pai’s hot springs like?
Pai has two, and they serve opposite purposes: Tha Pai for the egg ritual, Sai Ngam for an actual swim. Tha Pai Hot Spring sits about 8km south of town off Route 1095 inside Huai Nam Dang National Park, charges foreign visitors around ฿300 (US$9), and opens roughly 8am to 5pm. Its uppermost pool runs close to 80°C at source and is signposted for boiling eggs, not bathing; you soak in the stepped pools below, where guides consistently cite 34-42°C depending on how far down you go.
Sai Ngam Hot Spring, about 17km north toward Mae Hong Son, is the local favourite and the better swim. It’s a clear, dammed jungle stream commonly measured at 34-36°C, warm enough to stay in for an hour without going pink. Entry is a Lum Nam Pai Wildlife Sanctuary day permit, most often reported at ฿200 (US$6) for adults and ฿100 for children plus a ฿20-30 vehicle fee, though a minority of sources cite ฿400, so carry extra cash. The final stretch of road is unpaved, so take it slowly on a scooter.
Our Pai hot springs guide breaks both down in detail, including the private resort day-use alternative, and things to do in Pai covers fitting them into a two-day stay.
Where can you soak for free in Thailand?
Raksawarin Hot Springs in Ranong is the country’s best free soak, about 2km east of Ranong town. The public park charges nothing to enter and includes free foot-soaking channels, with an adjacent private bathing area operated by the Tinidee hotel at around ฿40 (US$1.20) per person. Thailand’s official government health-tourism page describes the water as reaching “a temperature of about 65 degrees Celsius” and, notably, as being certified by the Department of Science Service as “containing important minerals, without sulfur”, which is why there’s none of the rotten-egg smell that puts people off other springs. The site’s three main sources are traditionally named the Father, Mother and Daughter wells.
Ranong is one of Thailand’s least-visited provinces, so the park is rarely crowded outside Thai holidays. Reported hours differ between the free public area (roughly late morning to evening) and the paid private area (about 7am to 9pm), so check locally before making a special trip.
Which hot spring is a waterfall you can sit in?
Klong Thom Hot Springs, also signposted as Namtok Ron, in Khlong Thom district southeast of Krabi Town. A geothermal stream spills over smooth limestone into a series of shallow basins worn into the rock, so you sit in the cascade itself with warm water running over your shoulders before it drops into a cool freshwater creek below. Water temperature is commonly measured at 35-42°C, with hotter pockets closer to the source. Foreign adult entry is reported between ฿90 and ฿200 (US$3-6) depending on the source and whether you buy it standalone or bundled with a nearby ticket, with Thai nationals paying around ฿40. Hours are typically listed as 8:30am to 6pm daily.
Two honest warnings: the rock is genuinely slippery, and the basins fill with tour groups from mid-morning, so go at opening. Almost everyone pairs it with the Emerald Pool 15 minutes away, where foreign adults pay ฿400 (US$12), and the hot-then-cold sequence in one morning is why the combination works. For cold water elsewhere, our best waterfalls in Thailand guide has the rest.
Is there a hot spring near Bangkok or Kanchanaburi?
Nothing close to Bangkok, but Hin Dat Hot Spring in Thong Pha Phum, Kanchanaburi, is the nearest one worth the trip. Foreign adults are reported at around ฿60 (US$1.80), with long opening hours (some listings say 6am to 10pm), and the appeal is the layout: open-air thermal pools sit directly beside a cool mountain stream, so you alternate between hot mineral water and cold running water in the same visit. It’s rustic and communal, not a spa, and it was reportedly popularised by Japanese soldiers stationed there during the Second World War.
The catch is distance: roughly four to five hours from Bangkok, far past Kanchanaburi town on the road toward Sangkhla Buri, so fold it into an overnight Kanchanaburi trip rather than attempting a day trip from the capital.
How do you behave at a Thai hot spring?
Rinse before you get in, keep soap out of the water, and wear swimwear. Thai hot springs are clothed spaces, so there’s no onsen-style nudity; swimsuits, or shorts and a T-shirt, are standard, and a T-shirt over a swimsuit is the more comfortable option for women at smaller local springs. Rinse at the taps before entering any shared pool, and never use soap, shampoo or a scrub in the pool itself, since the water is shared and often slow-circulating.
Beyond that: keep eggs, food and drinks in the designated boiling basins and picnic areas, don’t run on wet stone, keep your voice down, and take your rubbish with you. At springs on temple grounds, cover up when you leave the water.
What are the honest downsides?
The water can burn you, and some of these fees are steep for what you get. Source pools at San Kamphaeng exceed 100°C by official description and Tha Pai’s top pool is near 80°C, so don’t test unmarked water. The two-tier pricing is also real: foreigners routinely pay five to ten times the Thai rate, which stings most at Tha Pai and Pong Dueat, where ฿300 buys a modest site. Northern springs in the hot season (March to May) are close to unbearable, and smoke season overlaps those same months. Access roads to Sai Ngam and Hin Dat get rough in the rain, and Klong Thom’s rocks send someone sliding most days.
Where to next
In the north, do San Kamphaeng as a half-day from Chiang Mai and save Sai Ngam for a Pai stay, using our Pai hot springs guide and things to do in Pai to plan the days. In the south, put Klong Thom and the Emerald Pool in the same morning, and for cold water see the best waterfalls in Thailand. Once your dates are set, browse Thailand events.
Sources
- San Kamphaeng Hot Springs, THAILAND.GO.TH (spring height, 100°C+ source, egg boiling, bathing zones)
- Health Tourism, Hot Springs: Raksawarin Park, THAILAND.GO.TH (65°C, Department of Science Service certification, sulfur-free, the three wells)
- San Kamphaeng Hot Spring, Thailand Tourism Directory (location, 34km from Chiang Mai)
- Raksawarin Hot Springs and Public Park, Tourism Authority of Thailand
- Raksa Warin Hot Springs, Thailandee (free entry, ฿40 private area, hours)
- San Kamphaeng Hot Springs, The Backpacking Family (2026 entry, mineral pool and private bath pricing)
- Krabi Hot Springs, We Seek Travel (Klong Thom fees, 8:30am-6pm, 35-42°C)
- Huai Nam Dang National Park fees, Chiang Mai Travel Hub (฿300 foreign adult, ฿150 child)
- Pong Dueat Geyser reviews, Tripadvisor (reported gate fee, combined ticket)
- Hindad Hot Spring, Your Thai Guide (foreign entry fee, hours)