Oceania Law Tracker Illegal

Cannabis in Melbourne, Australia
Police Cautions, THC Drug Driving & What Visitors Must Know

📅 September 2026 ⏱ 5 min read 🔍 Last monitored: September 2026
Flinders Street Station and the Melbourne city skyline, Victoria, Australia

Overview

Melbourne — laneway bars, live music, the Australian Open and a packed festival calendar — draws millions of visitors a year, and its progressive image leads many to assume cannabis is tolerated. It is not: cannabis is illegal in Victoria, with no legal shop, club or dispensary anywhere in the state.

The single most important thing to know: the biggest legal risk is not the joint, it's the car and the airport. A small amount of cannabis usually ends in a police caution. A roadside saliva test showing any THC costs you your licence, and cannabis in your luggage at Melbourne Airport (Tullamarine) is a federal import offence.

The Law Right Now

Cannabis is governed by the Drugs, Poisons and Controlled Substances Act 1981 (Vic). Possessing a "small quantity" — 50 grams or less — not connected with trafficking carries a maximum of 5 penalty units. From 1 July 2026 a Victorian penalty unit is $209.10, so that is about $1,045. Using cannabis is a separate offence with another 5 penalty units. Above 50g the maximum rises to 30 penalty units (about $6,273) or 1 year in prison.

At 250 grams or 10 plants you reach a traffickable quantity: trafficking carries up to 15 years, and a commercial quantity (25kg or 100 plants) up to 25 years. Victoria has no on-the-spot cannabis fine — a charge means a court case.

Driving is where Victoria is strictest. Police run random roadside saliva tests, and any detectable THC is an offence under the Road Safety Act 1986, impaired or not. A first offence brings a fine of up to 12 penalty units (about $2,509) and a minimum 6-month licence suspension. Since 1 March 2025, magistrates can decide whether a driver with a valid medicinal cannabis prescription loses their licence — but testing positive remains an offence.

Medicinal cannabis is legal on prescription only; there is no over-the-counter THC or CBD market. Bringing cannabis into Australia is a Commonwealth matter: importing any quantity is an offence under section 307.3 of the Criminal Code Act 1995, with a maximum of 10 years' imprisonment.

Realistic Consequences

A tourist found with a gram or two in a park or at a gig will most likely be offered a formal caution under the Cannabis Cautioning Program. You must admit the offence, the cannabis is confiscated, and a September 2024 Victoria Police Manual update recommends cautions over arrest for amounts up to 50g, without the old two-caution limit. But it is discretionary and applied unevenly: in May 2026 Legalise Cannabis MP Rachel Payne told Parliament that about 48% of possession cases still end in arrest, against 37.5% in cautions. Refusing to admit it, carrying over 50g, or deal bags and cash push you toward a charge and a Magistrates' Court date.

At music festivals, Victoria Police deploy drug detection dogs, and a dog indication is grounds for a search. The ACT's 50g decriminalisation does not travel with you: once you cross into Victoria, the Victorian law applies in full.

📡 Regulation Pulse

  • September 2024: Victoria Police Manual updated to recommend cautions over arrest for up to 50g and remove the cap on the number of cautions.
  • 1 March 2025: magistrates gain discretion over licence loss for medicinal cannabis patients who test positive for THC while driving.
  • 13 May 2026: Legislative Council backs a non-binding motion by Rachel Payne to write the cautioning scheme into law.
  • June 2026: the Swinburne medicinal cannabis driving trial misses its 18-month deadline, delaying any broader driving reform.
  • 12 August 2026: Legalise Cannabis Victoria's plebiscite on legalisation is voted down by Labor and the Coalition; the government says it has "no plans" to change the law. State election due November 2026.

Public Sentiment

Victorians are ahead of their politicians. A RedBridge survey for the Penington Institute, conducted in late 2023 among 1,511 adults, found 54% supported a regulated adult-use market, with 28.5% opposed. Both major parties still refuse to legalise.

Practical Advice for Visitors

Do not buy cannabis in Melbourne. There is no legal source; anything bought on the street or online is illegal to possess.

Do not drive after using cannabis, and do not assume waiting a few hours makes you safe. Roadside saliva tests detect THC, not impairment, and a positive result means a fine and at least a 6-month suspension.

If stopped with a small amount, stay calm and co-operative. A caution requires you to admit the offence and is at the officer's discretion; arguing or refusing makes a charge more likely.

Do not bring cannabis through Melbourne Airport — or post it. Importing any quantity is a federal offence carrying up to 10 years. Purchases made legally abroad get no allowance.

If you are a medicinal cannabis patient, declare it. Carry your prescription, keep it in original pharmacy packaging and bring no more than a 3-month supply under the traveller's exemption.

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