If you are planning a trip to Koh Samui and wondering about the cannabis scene, you are not alone. Since Thailand reshaped its laws, weed in Koh Samui has become one of the most searched topics for first-time travelers, from backpackers to honeymooners. This Koh Samui weed guide is the practical version we give our own customers at How High: what is legal, where to buy, what it actually costs, where you can consume, and how to keep your first time easy.
Is Weed Legal in Koh Samui?
Short answer: yes, with one paperwork step. Thailand removed cannabis from its narcotics list in June 2022, and it stays legal to buy and enjoy. In June 2025 the rules tightened and flower became a controlled herb. In practice that means every flower purchase now runs through a quick medical certificate called a PT33, which a licensed shop sorts for you in store. Bring your passport and you are done in a couple of minutes.
For a first-time visitor, the rules that matter are simple:
- Buy only from licensed dispensaries that handle your PT33
- Keep consumption private, never in public spaces
- Never carry cannabis across a border, in or out of Thailand
Stay inside those lines and there is nothing to stress about.
Where to Buy Weed in Koh Samui
Stick to licensed dispensaries. They display their license, arrange your PT33, and sell labelled product with a known source rather than a mystery bag from a beach vendor. The island has plenty of good shops, mostly clustered around Chaweng, Lamai, and Fisherman’s Village in Bophut. At How High you can see and smell everything first and lean on English-speaking budtenders, which matters far more than price when you do not know the local genetics yet. Between our two shops you will find Thai flower, imported Cali packs, hash, pre-rolls, and edibles, or you can browse the full menu before you arrive.
How Much Does Weed Cost in Koh Samui?
Prices are easy to sanity-check once you know the tiers. Here is what to expect on Samui in 2026:
- Thai-grown flower: from about 150฿ a gram
- Imported Cali flower: roughly 450 to 800฿ a gram
- Cali packs: from around 2,400฿
- Hash, pre-rolls, and edibles: priced per piece, just ask the budtender
Tourist-strip shops sometimes charge a little more, so it pays to compare. If you are staying a while, ask about member pricing and larger quantities, which bring the per-gram cost down.
Where Can You Legally Smoke in Koh Samui?
This is the part first-timers get wrong. Consumption is for private spaces only: your villa, a hotel room that allows it, or a licensed lounge. Beaches, streets, parks, and anywhere near a temple or school are off limits, and public smoking is treated as a public nuisance with fines attached. Curious about the sand specifically? We cover it in detail in can you smoke on the beach in Koh Samui. Many hotels are strictly non-smoking, so check before you light up. If yours is, that is exactly what villa delivery is for.
Important Travel Warnings
One rule matters more than all the others: never take cannabis off the island or out of Thailand. Airport and border checks are strict, and what is legal here can land you in serious trouble the moment you leave. Beyond that, treat your first sessions with respect. Start low, especially with edibles and especially in the heat, where a strong dose plus sun plus a few drinks ends more holidays than anything else. Stay hydrated, eat first, skip mixing weed with alcohol, and never drive or ride a scooter under the influence.
Why Koh Samui Is Popular for Cannabis Tourism
Koh Samui pairs clear water, easy island living, and a mature licensed cannabis scene that did not exist a few years ago. You can pick up a couple of grams of genuine California genetics, sort the paperwork in minutes, and enjoy it back at your villa, all without the grey-market guesswork you might be used to at home. Done responsibly, it becomes one of the more relaxing parts of a Samui trip. For more on the unwritten rules, our Thailand weed etiquette guide is worth a read before you go.
Koh Samui Weed Guide FAQ
Do I need a prescription or PT33 to buy weed in Koh Samui? In practice yes, but it is painless. Since June 2025, flower is a controlled herb, so a licensed shop like How High issues your PT33 medical certificate on the spot. Bring your passport and you are sorted in minutes.
How much should a first-timer expect to pay? Thai-grown flower starts around 150฿ a gram, imported Cali runs roughly 450 to 800฿ a gram, and Cali packs start near 2,400฿. Ask about member pricing if you are staying a while.
Where can tourists legally smoke in Koh Samui? Private spaces only: your villa, a hotel room that allows it, or a licensed lounge. Beaches, streets, parks, and anywhere near a temple are off limits and carry fines.
Can I get weed delivered to my hotel or villa? Yes. Delivery reaches most of the island, which is the easy fix if your hotel is non-smoking. Message How High on WhatsApp and the menu comes to you.
Can I bring cannabis home from Thailand? No. Carrying it across any border is a serious offence, whatever the law is at your destination. Enjoy it on the island and leave it there.
Your First Stop on Samui
That is everything a first-time traveler needs: buy licensed, sort your PT33 in store, keep it private, and respect the island. When you land, come say hello at How High in Chaweng or at Fisherman’s Village in Bophut, and our budtenders will get you sorted properly. For the consumption rules in more depth, read our companion guide on cannabis consumption in Koh Samui.
