TL;DR: Koh Phangan’s yoga and wellness scene centres on Sri Thanu, a former fishing village on the west coast with around nine or ten yoga schools, vegan cafes and healers packed into a few walkable streets. The Sanctuary, on boat-only Haad Tian beach, is the best-known residential retreat, charging ฿12,000-33,000 (~US$364-1,000) for 3-10 day yoga packages excluding accommodation (dorms from ฿220/night, bungalows from ฿770). Orion Healing runs structured juice-fasting and colonic detox programs from ฿10,000 (~US$303) for 3.5 days up to over ฿100,000 for a full month, accommodation included, priced by room type. Drop-in yoga classes across the island typically run ฿300-350 (~US$9-11), and a 200-hour teacher training course runs roughly US$1,400-2,300 depending on the school. One honest warning: Agama Yoga, also based in Sri Thanu, was the subject of a 2018 Guardian investigation in which 14 former students accused its founder of sexual assault; the school reopened in 2019 and the allegations resurfaced in Netflix’s 2020 series (Un)Well, so research any course there carefully before booking. All prices ฿33 = US$1 (July 2026).
Koh Phangan has two reputations that rarely overlap: the Full Moon Party island, and one of Southeast Asia’s densest yoga and wellness hubs. Anyone searching for a Koh Phangan yoga retreat is usually looking for the second Phangan, the one centred on Sri Thanu’s quiet west coast rather than Haad Rin’s beach bars. This guide covers where the scene actually is, what a residential retreat like The Sanctuary costs versus a structured detox at Orion Healing, how drop-in classes and teacher training compare on price, and an honest look at Agama Yoga’s history that any first-time visitor deserves to know before they book. Every price and detail below is checked against current 2026 operator listings and documented reporting, sourced at the end.
Sri Thanu: the centre of the scene
If you want to be walking distance from yoga studios, healers and vegan cafes, Sri Thanu is the only sensible base. It’s a small former fishing village on Koh Phangan’s west coast that’s grown organically into the island’s wellness hub over roughly two decades, now home to around nine or ten yoga schools within a few kilometres, alongside Reiki practitioners, sound healers, Ayurvedic clinics and a concentration of raw and vegan restaurants unmatched elsewhere on the island. It’s also, deliberately, the quiet side of Phangan: no full moon crowds, no all-night sound systems, just a community that runs on an earlier, calmer rhythm than Haad Rin a few kilometres south.
That said, Sri Thanu isn’t a single retreat centre, it’s a loose cluster of independent schools and studios of wildly varying quality, price and philosophy. Some travellers base here for a week of drop-in classes; others commit to a full residential program at one specific school. Either approach works, but it’s worth treating Sri Thanu as a neighbourhood to explore rather than a single product to book.
The Sanctuary: Haad Tian’s boat-only retreat resort
The Sanctuary is Koh Phangan’s best-known residential retreat, and part of its appeal is that you genuinely cannot drive there. It sits on Haad Tian beach, reachable only by longtail boat, typically a 15-20 minute ride from Haad Rin costing around ฿200 (~US$6). That isolation is deliberate: no scooters, no through-traffic, just a resort built up a jungle hillside with a well-regarded beachside restaurant at its centre.
Yoga packages run ฿12,000 (~US$364) for 3 days, ฿18,000 (~US$545) for 5 days, ฿25,000 (~US$758) for 7 days, and ฿33,000 (~US$1,000) for the 10-day option, and none of these figures include accommodation, which is billed separately. Packages include a welcome meal, a daily yoga class, at least one private session, daily massage, steam and cave plunge access, and daily brunch. Accommodation itself starts at ฿220 (~US$7) a night for a shared dorm bed and runs from ฿770 (~US$23) upward for a private bungalow, with walk-in rates for nicer rooms reported as high as ฿1,500 (~US$45) in busier periods.
Detox and fasting: Orion Healing and the cleanse programs
If a straight yoga holiday isn’t intense enough, Orion Healing in Sri Thanu is the island’s established name for structured juice fasting and colonic detox. Founded in 2005 and still running two decades later, a longer track record than most newer operators on the island, Orion was featured on BBC Two’s “The Retreat with Nick Knowles,” which followed a month-long detox stay there. Facilities include a herbal steam sauna, infrared sauna, ice bath and two yoga shalas, alongside the core detox programming of juice fasting and colonic support with daily guidance from wellness staff.
Pricing runs by program length and accommodation tier, all-inclusive of the room. The shortest, a 3.5-day “Renewal” program, starts around ฿10,000 (~US$303) in a basic fan bungalow and rises to ฿15,200 (~US$460) for a superior sea-view room over the same period. A 7.5-day Renewal program runs ฿17,900-28,300 (~US$542-858) depending on room type, and the longest options, including a full 28-day “Sabai” program, run well over ฿100,000 (~US$3,030). Drop-in yoga classes at Orion, separate from the detox programs, cost around ฿300 per class.
An honest note on Agama Yoga
This is the section a lot of retreat guides skip, and it shouldn’t be skipped. Agama Yoga, a long-established Sri Thanu school built around tantra and hatha yoga teachings, was the subject of a September 2018 investigation by The Guardian, in which 14 former students accused founder Swami Vivekananda Saraswati (born Narcis Tarcău) of sexual assault and rape spanning roughly 15 years of the school’s operation. The founder left the island shortly after the story broke; the school closed briefly, then reopened in 2019 under the same leadership. The allegations resurfaced publicly again in 2020, when Netflix’s docuseries (Un)Well covered the case in an episode on tantric sex practices.
Agama still operates today and still has defenders, including former students who describe positive experiences. But given the seriousness of the allegations and how directly they involve the school’s own founder and leadership, this isn’t a detail to skip past in a course brochure. If you’re considering Agama specifically, read the original Guardian reporting yourself, ask current students direct questions, and make an informed choice rather than booking on reputation or a glossy Instagram feed alone.
Drop-in classes vs residential retreats
A single drop-in class is the cheapest, lowest-commitment way to sample the scene; a residential retreat is a bigger investment aimed at a deeper reset.
| Option | Typical cost | What you get | Best for |
|---|---|---|---|
| Drop-in class | ~฿300-350 (~US$9-11) per class | One class, any studio, no commitment | Testing the scene, short stays |
| Yoga retreat (e.g. The Sanctuary) | ฿12,000-33,000 (~US$364-1,000) + accommodation | Daily classes, private session, massage, some meals | A structured week or two of practice |
| Detox program (e.g. Orion Healing) | ฿10,000-100,000+ (~US$303-3,030+) including room | Juice fasting, colonics, steam/sauna, daily supervision | A dedicated physical reset, not just yoga |
| 200-hour teacher training | 3-5 weeks, certification, varies by school | Becoming a certified instructor |
Pricing compiled from current 2026 operator listings; see Sources. All prices ฿33 = US$1 (July 2026).
Best areas to base yourself
Sri Thanu suits anyone who wants to walk to multiple studios and cafes; Haad Tian suits anyone who wants full immersion and doesn’t mind being boat-dependent; Ban Tai is the practical middle ground. Sri Thanu is compact and social, with enough variety of schools and cafes to fill a week without repeating yourself. Haad Tian, home to The Sanctuary, trades convenience for genuine remoteness, no scooter access, limited connectivity, and a real sense of separation from the rest of the island, which is either the whole point or a dealbreaker depending on what you want. Ban Tai, on the road between Thong Sala and Haad Rin, has a smaller but growing set of wellness-oriented guesthouses and is a reasonable base if you want easy access to Thong Sala’s ferries and shops without living inside the Sri Thanu bubble.
For food and evening options between sessions, Thong Sala’s Pantip night market is worth knowing about, though it’s a food and street-stall market, not a wellness venue in its own right, so don’t expect yoga classes or healers there.
Honest downsides
- Costs add up fast once you count accommodation, food outside the package, and any extra treatments. The headline yoga package price is rarely the full bill.
- The Sanctuary’s isolation cuts both ways. No scooter access and boat-only transport is exactly what some people want, but it also means you’re committed once you’re there, with limited flexibility if you change your mind mid-stay.
- Detox programs are physically demanding. Multi-day juice fasting and colonics aren’t a relaxing beach holiday; go in with realistic expectations and, ideally, a conversation with your own doctor first if you have any underlying health conditions.
- Quality and safety vary a lot between schools. Sri Thanu’s yoga scene has grown organically over two decades with no single accreditation body policing every studio, and the Agama case above is the clearest example of why due diligence matters here more than at a standard hotel booking.
- It’s a small island community. Reputations, gossip and rumours travel fast in Sri Thanu, which can be part of the charm or genuinely uncomfortable depending on your experience.
Bottom line
Koh Phangan’s wellness scene is real and substantial, not a marketing gimmick bolted onto a party island, but it rewards the same due diligence you’d apply anywhere else: check what a package actually includes, budget for accommodation and food on top of the headline price, and do basic research on any school with a controversial history before handing over a deposit. Sri Thanu is the right base for most people; The Sanctuary and Orion Healing are both established, verifiable options at different intensities. Pair this with a wider look at things to do on Koh Phangan, check where to stay on Koh Phangan for accommodation outside the retreat centres themselves, and see how to get to Koh Phangan if you’re still planning the trip. If you’re weighing Phangan against its neighbour, Koh Phangan vs Koh Samui covers that comparison, and what’s on is worth a check for anything else happening on the island during your stay.
Sources
- The Sanctuary Thailand: Yoga Retreats: yoga package pricing (฿12,000-33,000 for 3-10 days), package inclusions
- Detox Retreats Thailand: Orion Koh Phangan Programs: full Orion Healing detox program pricing table by duration and room type
- Orion Healing: Beachfront Yoga Retreat in Koh Phangan: Orion Healing founding year (2005), BBC Two “The Retreat with Nick Knowles” feature, facilities
- The Guardian, via Wikipedia summary: Agama Yoga: September 2018 sexual assault allegations against Agama Yoga’s founder, 2019 reopening, Netflix (Un)Well 2020 coverage
- OneYogaThailand: The 10 Best Yoga Teacher Trainings on Koh Phangan in 2026: 200-hour teacher training price range across island schools ($1,400-2,300)
- Islanders Properties: Srithanu, the Center of Spiritual Practices on Phangan: Sri Thanu description, number of yoga schools, village history and atmosphere
- Global Gallivanting: My Guide to Yoga Retreats in Koh Phangan, Thailand: The Sanctuary boat-only access confirmation, Agama controversy note