Is Weed Legal in Rio? What the 40g Rule Means
Written and reviewed by Lotte — Rio local, founder & editor of PlanRio · How we research · First published · Last reviewed
Quick answer
No — recreational cannabis has not been legalised in Rio, but a 2024 Supreme Court ruling removed criminal consequences for acquiring or possessing cannabis for personal use. It remains illicit outside criminal law: the substance can be seized and non-criminal measures may apply. Up to 40 grams or six female plants is a rebuttable presumption of personal use, not a legal allowance. The decision does not legalise unlicensed supply or create a recreational dispensary system.
"Is weed legal in Rio?" is one of the most-asked questions we get, usually with a hopeful edge. The honest, local answer is more nuanced than a yes or no — Brazil recently softened its stance, but "decriminalised" and "legal" are worlds apart, and the practical reality on the ground has more to do with who controls the supply than with what a court ruled. Here's the clear version, without moralising and without pretending the risks don't exist.
Brazil drug laws at a glance
| Recreational cannabis | Illegal (not legalised) |
| Personal-use cannabis | No criminal consequences under STF ruling; still illicit |
| Personal-use presumption | Up to 40 g / 6 female plants; rebuttable, not a permit |
| Unlicensed supply | Not legalised; trafficking laws still apply |
| Public consumption | No general-use permission; seizure and venue rules still matter |
| Medical cannabis | Separate ANVISA pathway; rules updated in 2026 |
| Other drugs (cocaine…) | Illegal — heavy penalties |
| Street supply | Faction-controlled — avoid entirely |
What the law actually says
Brazil's 2006 Drug Law sets out personal-use measures and separate trafficking offences. In June 2024, the Supreme Federal Court (STF), in Theme 506, ruled that acquiring, storing, possessing or transporting cannabis for personal use is not a criminal offence. It remains an unlawful act outside criminal law: cannabis may be seized and a judge may apply the law's warning or educational measures through a non-criminal procedure. The ruling removes criminal consequences for this cannabis conduct; it does not legalise adult-use sales or other drugs. Read the STF's Theme 506 case record and the current consolidated Drug Law.
The 40-gram or six-female-plant figure is a rebuttable presumption, not a bright-line safe amount: the STF says evidence of commercial intent can support a trafficking allegation even below it, while a person above it may still present evidence of personal use. Police must give specific reasons to disregard the presumption; the quantity alone does not settle every case. The decision concerns acquisition and possession for personal use. It did not legalise an adult-use market or authorize unlicensed supply. Medicinal products and cultivation follow separate ANVISA rules; unauthorized supply remains subject to the Drug Law's separate penalties.
What it means for you as a tourist
The (relatively) low-risk reality
- Personal-use possession won't earn a criminal record
- Personal-use cannabis has no criminal consequence under the STF ruling, though non-criminal measures remain possible
- Seeing someone use it in public does not establish legal permission
The risks that still bite
- The cannabis can be seized and the facts can be disputed
- Evidence of supply may rebut the presumption, even below 40 grams
- An unlicensed seller's supply remains outside the personal-use ruling
- Insurance exclusions vary; check the policy wording
- The decision does not grant permission to use in every public place
The part nobody advertises: where it comes from
Brazil has no licensed adult-use cannabis retail system comparable to a regulated dispensary market. The STF's personal-use ruling does not authorise a seller to provide cannabis: the Drug Law separately criminalises unauthorized supply. A visitor cannot verify an informal product or seller, and should not travel into an unfamiliar area looking for one. The UK FCDO's current Brazil safety advice tells visitors not to enter favelas, including accommodation, bars or tours advertised as being within them. The safest practical choice is to take a break rather than treating a street offer as a legal retail option.
Insure the trip properly instead
Policy exclusions depend on the wording and circumstances. Check medical, theft and drug-related exclusions directly with your insurer, and ask about a specific situation in writing before you travel.
Get a travel insurance quoteCommon mistakes visitors make
- Thinking decriminalised means legal. It remains illicit outside criminal law; the substance can be seized and non-criminal measures may apply.
- Treating an informal seller as licensed retail. The personal-use ruling does not legalise unauthorized supply or make an unregulated product safe.
- Assuming "everyone does it" is legal cover. Visible use is not proof of permission, and the ruling does not settle every public-place or venue rule.
- Treating 40 grams as a safe allowance. It is a rebuttable presumption, not a legal limit or guarantee.
- Assuming insurance pays or denies automatically. Read the policy's actual exclusions and confirm unclear terms with the insurer.
Local expert tips
- If you're stopped, stay calm, polite and cooperative — arguing law with Rio police goes nowhere good.
- Prescribed cannabis medication? Check the current ANVISA cannabis import guidance and obtain any required approval before you travel.
- Want a big night out without the risk? Rio's legal nightlife is world-class — samba, funk and rooftop bars beat anything a dodgy street buy offers.
- Read our Rio scams guide and safety guide so you know how the city actually works.
- For a legal night out, check current venue listings and plan your return route before the evening begins.
A better Rio night out
This specific 2.5-hour guided food-and-drinks walk offers daytime and evening routes through Centro and Lapa, with a meeting point at Carioca station. Hotel pickup and drop-off are not included, so check the listing and plan your own return journey before booking.
See the Lapa nightlife tourAffiliate disclosure: PlanRio may earn a commission if you book through these links, at no extra cost to you. Check policy terms and tour inclusions before booking.
Frequently asked questions
Is weed legal in Rio de Janeiro in 2026?
No — recreational cannabis has not been legalised in Brazil. The STF ruled that acquiring or possessing cannabis for personal use is not a criminal offence, but remains illicit outside criminal law: the substance can be seized and non-criminal measures may apply. Up to 40 grams or six female plants is a rebuttable presumption of personal use, not a legal allowance. The ruling does not legalise supply or create a licensed adult-use market.
How much cannabis is considered 'personal use' in Brazil?
The STF set a rebuttable presumption of personal use at up to 40 grams of cannabis or six female plants, pending legislation. It is not a guaranteed legal limit: evidence of sale may rebut the presumption below it, while a person above it can still seek to show personal use. The ruling removes criminal consequences for personal-use cannabis possession; confiscation and non-criminal measures remain possible.
Can tourists get in trouble for weed in Rio?
Yes. A visitor can be stopped and have cannabis seized. The personal-use presumption can be challenged when there is evidence of supply, and an allegation of trafficking can bring a criminal investigation. The STF ruling does not make an informal seller's supply legal; do not assume that a small amount makes every purchase or situation risk-free.
Where do people buy weed in Rio, and is it safe?
There is no licensed adult-use dispensary system in Rio. The STF ruling covers acquiring or possessing cannabis for personal use, not the seller's unauthorized supply. We do not direct visitors to illegal sellers: an informal purchase is not a regulated product, and travelling into an unfamiliar area to seek one adds avoidable legal and personal-safety risks. The UK FCDO advises visitors not to enter favelas; take a break rather than treating a street offer as a legal retail option.
Is medical cannabis legal in Brazil?
There is a separate, regulated medical pathway. ANVISA's framework changed in 2026: RDC 1.015/2026 took effect on 4 May for medicinal cannabis products, while personal importation follows its applicable prescription and import procedures. Before flying with any cannabis medicine, confirm that exact product and the current requirements with ANVISA and your airline; do not assume a foreign prescription alone authorises entry.
What about other drugs like cocaine in Rio?
The STF's 2024 ruling is specifically about cannabis; do not apply its 40-gram presumption or non-criminal treatment to cocaine or another substance. Brazil's Drug Law treats other controlled drugs under separate rules, and unauthorized supply or trafficking can carry severe criminal penalties. For any personal legal question, get advice from a qualified Brazilian lawyer rather than relying on a cannabis summary.
Can I smoke weed on the beach in Rio?
The personal-use ruling did not create permission to consume cannabis in every public place or a licensed recreational market. Personal-use possession remains illicit outside criminal law and the substance can be seized; venues may also set their own rules. Do not infer legal permission from seeing someone else use it, and avoid carrying or consuming cannabis during your visit.
Does travel insurance cover drug-related incidents in Brazil?
Coverage depends on the policy wording and the facts of a claim. Some policies exclude or limit incidents connected with drug use, but a denial is not automatic across every policy or circumstance. Read the exclusions and ask the insurer about a specific concern in writing; do not assume the STF ruling makes a drug-related incident covered.