Cannabis in Koh Samui: clinics, dispensaries and local rules
Updated 9 November 2026
Thai cannabis law changes often. Check the date on any page before you rely on it.
What to know locally
Police on Samui have gone after cannabis shops that break other drug laws: in May 2025 the co-owners of a Bo Phut cannabis shop were arrested after an undercover officer bought magic mushrooms there. Samui airport has also seen large outbound smuggling cases, including 144 kg of cannabis seized from five foreigners checking in for Singapore in March 2025. Taking cannabis out of Thailand is a serious criminal offence.
How to get cannabis legally here
See a licensed practitioner at a clinic, or a licensed dispensary with one on site.
If appropriate, they issue a PT33 prescription, covering up to 30 days.
Buy only what is prescribed, in person, with your passport or Thai ID.
Use it in private, and keep your PT33 and receipt with you.
Clinics and dispensaries
Always confirm a shop's licence on the government's MC-GIS map before you visit. Listings are editorial and free.
Siam Green's own site says a licensed practitioner issues the PT33 after an in-branch consultation, for up to a 30-day supply, and that buyers must be 20+ with photo ID or passport. It does not say whether a practitioner is present at all hours.
Address
200/8 Chaweng Beach Road, Ko Samui, Surat Thani 84320
Says it runs five licensed branches in Thailand; no licence number published.
WeedeN (Samui branches)
Multiple branches incl. Bo Phut and Lamai
PT33 on site: not stated
Chain that said in August 2025 it had shifted to an education-first model to guide customers through the prescription process. Branch addresses come from a February 2025 list and may have changed.
Address
New Fisherman: 32/3 Bo Phut 84320; Lamai Green: 308/124 Had Lamai Road, Maret 84320
Police raided the Snoopy Samui cannabis shop in Bo Phut after an undercover purchase of magic mushrooms. The Israeli and Thai co-owners were charged with possession with intent to sell a Category 5 narcotic.
Five foreigners were stopped at Samui International Airport check-in with 144 kg of cannabis buds in seven suitcases bound for Singapore and the UK. Police said they had been recruited as couriers and were hunting the organiser.