Quick answer: Under Maine cannabis laws for tourists, any adult 21 or older can buy adult-use cannabis with a valid government-issued photo ID, no residency required. You can buy and carry up to 2.5 ounces, including no more than 10 grams of concentrate (Title 28-B, section 1501). Use it only on private property, never drive impaired, and don't take any out of Maine.
Half the people who ask us this are at the counter with a rolling suitcase. Here's what we tell them, statutes attached.
Can out-of-state visitors buy cannabis in Maine?
Yes. Maine's adult-use law is based on age, not residency, so a visitor from Ohio or Quebec has the same right to buy as someone who grew up in Portland. Title 28-B, section 504, which governs cannabis stores, sets a 21-and-over rule and says nothing about where you live.
Maine voters approved adult use in 2016, retail sales began in October 2020, and the Maine Office of Cannabis Policy (OCP) regulates the market. Nobody will ask for a Maine address.
What ID do you need to buy cannabis in Maine as a tourist?
You need a valid, unexpired, government-issued photo ID that shows you're 21 or older. Section 504 requires staff to check "a valid government-issued photographic identification card, or other acceptable photographic identification" before any sale starts.
A US driver's license or state ID
Any state's license works if it's current. Expired licenses are the most common problem we see, followed by paper temporary licenses. If that's all you have, bring a second ID.
A passport or passport card
A valid US passport or passport card qualifies. For international visitors, including Canadians, a valid foreign passport is the safest choice. Some foreign driver's licenses are hard to verify, so bring the passport and save everyone five minutes.
What doesn't work
A photo of your ID on your phone. A college ID. Confidence. Staff check every purchase, however old you look.
How much cannabis can a tourist buy in Maine?
Visitors can buy up to 2.5 ounces of cannabis per transaction, of which no more than 10 grams can be concentrate, which is the same limit residents get. That number is also the legal possession limit, so it's the most you should be carrying at any moment, not just the most you can buy in one go.
Edibles, vapes and drinks count toward that total in their own ways, and our breakdown of Maine possession and purchase limits explains the math. For a weekend, the limit isn't the problem. Buying more than you'll finish by Sunday is.
Where can visitors use cannabis in Maine?
Only on private property where the owner allows it. Title 28-B, section 1501 makes using cannabis in a public place a civil violation with a fine of up to $100, and that includes sidewalks, beaches, parks, bars and your parked car.
The catch: most hotels are smoke-free, and many rentals ban smoking in the listing. Our guide to where you can smoke weed in Maine covers the details. Plenty of visitors switch to edibles or drinks for the trip, and tips on consuming discreetly help keep you on good terms with your host.
Maine cannabis dos and don'ts for visitors
| Do | Don't |
|---|---|
| Bring a valid, unexpired photo ID (passport if you're from outside the US) | Show a photo of your ID on your phone |
| Keep your total under 2.5 ounces, with no more than 10 grams of concentrate | Stock up for the month at home |
| Use it on private property with the owner's permission | Light up on the Eastern Promenade, a beach or a ferry |
| Keep sealed products in the trunk while driving | Consume in a car, as driver or passenger |
| Start low with edibles and THC drinks | Take a second gummy because the first one "isn't working" |
| Finish or gift leftovers to another adult 21+ before you go | Pack it for the flight, the drive to New Hampshire or the border |
| Leave it behind before visiting Acadia or other federal land | Assume a national park follows state law |
Your first purchase as a visitor, step by step
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Check your ID before you leave the hotel. We're open daily, 8:30am to 10pm. Look at the expiration date. Seriously.
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Browse or order ahead. The online menu lets you reserve for in-store pickup, handy between lunch and a ferry.
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Show your ID. It takes seconds.
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Tell your Cannabis Guide what kind of weekend you're planning. Our menu is sorted by how you want to feel (Energize, Unwind, Social, Adventurous and more), a better starting point than a strain name you half-remember.
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Be honest about your tolerance. Maine products are lab-tested and labeled, but dosing, serving sizes and product styles may not match what you buy back home. Our guides to how long edibles take to kick in and how long THC drinks take are worth two minutes.
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Pay, and keep it packed. Leave everything in its original, labeled packaging until you're somewhere you're allowed to use it.
New to dispensaries entirely? Our first-timer's guide to what to expect covers the rest.
Can you drive after using cannabis in Maine?
No. Operating under the influence (OUI) in Maine, under Title 29-A, section 2411, covers cannabis the same way it covers alcohol. Passengers can't consume in a vehicle on a public road either.
Maine has no legal THC blood limit, which some visitors read as a loophole. It's the opposite. With no number to stay under, the Maine Department of Public Safety says officers prove impairment through observed driving and impairment evaluations, and any officer can build the case. If you feel it, you're not driving. A rideshare is cheaper than a lawyer.
Can you take cannabis out of Maine?
No. OCP's own guidance is blunt: "It's illegal to leave Maine with any cannabis products, medical or recreational." Cannabis sold for adult use remains a Schedule I controlled substance under federal law. In April 2026 the DEA moved state-licensed medical marijuana to Schedule III, and a hearing on broader rescheduling began on June 29, 2026, but as of September 2026 adult-use cannabis hasn't moved, and no scheduling change would make crossing a state line legal anyway.
Flying out of Portland International Jetport
Screening at the Jetport is run by TSA, a federal agency. TSA says it doesn't search for marijuana, but if officers find it they'll refer it to law enforcement. We found no published Jetport amnesty box, so don't count on one.
Driving to New Hampshire
New Hampshire still hasn't legalized adult use. On March 5, 2026, the state Senate voted 15 to 9 to table HB 186, a House-passed legalization bill. Possession of up to three-quarters of an ounce there is a civil violation with a $100 fine for a first offense, and anything above that is a criminal matter.
Crossing into Canada
Cannabis is legal in Canada, and it still can't cross the border. The Canada Border Services Agency warns that transporting cannabis across the border, "regardless of quantity, and even to or from jurisdictions that have legalized cannabis," can lead to prosecution.
Cruise ships docking in Portland
Major lines, including Carnival, Royal Caribbean and Norwegian, ban cannabis onboard whatever the port allows, and many Portland itineraries continue to Canada. Bring nothing back aboard.
Is cannabis allowed in Acadia National Park?
No. Acadia is federal land, and the National Park Service enforces federal regulations there, including 36 CFR 2.35, which prohibits possessing controlled substances in park areas. In late 2025, news reports said federal prosecutors would again pursue simple possession cases on federal land, including in Acadia. Leave it at the rental before driving to Bar Harbor.
What should visitors do with leftover cannabis before they leave?
Finish it, give it to another adult, or dispose of it. Maine law lets anyone 21 or older give up to 2.5 ounces to another adult 21 or older, as long as no money changes hands (Title 28-B, section 1501). A friend in Maine is the easy answer.
Selling it isn't allowed. Otherwise, mix leftovers with something unappealing, like used coffee grounds, and throw it out where kids and pets can't reach. Better still, buy less. Two pre-rolls and one pack of drinks rarely leave leftovers.
Around the shop on St John Street
Rose Mary Jane sits at 327 St John St, west of downtown, a short rideshare from the Old Port. It's the side of Portland people actually live in, which is why we call ourselves a neighborhood shop rather than a tourist stop.
We're social-equity-owned, and much of our shelf comes from women-owned, LGBTQ+, BIPOC and social equity brands. Ask a Cannabis Guide what's new that week. You'll hear an opinion. You can find directions and details on our Portland location page, or call (207) 805-1644. And if Portland turns into a regular trip, Amplify 2.0 loyalty is free to join.
Frequently asked questions
Can tourists buy cannabis in Maine?
Yes. Any adult 21 or older can buy adult-use cannabis at a licensed Maine store, whether or not they live in Maine. The law checks age, not residency. You'll need a valid, unexpired, government-issued photo ID, and staff check it before every sale. Out-of-state driver's licenses and passports are the usual choices, and international visitors should bring a passport.
How much cannabis can a visitor buy in Maine?
Visitors get the same limit as residents: up to 2.5 ounces of cannabis per transaction, including no more than 10 grams of concentrate. That is also the most you can legally possess at one time, so repeat trips to different stores in one day don't raise your allowance. For most weekend visitors, a fraction of that limit is plenty.
Can I take cannabis bought in Maine home to another state?
No. The Maine Office of Cannabis Policy says it is illegal to leave Maine with any cannabis product, medical or recreational. Adult-use cannabis is still illegal under federal law, and neighboring New Hampshire has not legalized adult use. Finish what you bought, give it to another adult 21 or older, or dispose of it before you go.
Can I fly with cannabis from Portland International Jetport?
No. Airport security is federal. TSA says it doesn't search for marijuana, but if officers find it during screening they refer the matter to law enforcement. Carrying cannabis on a plane is a federal issue even when both the departure and arrival states allow adult use. Leave everything behind in Maine before you head to the Jetport.
Can I smoke cannabis in Acadia National Park?
No. Acadia National Park is federal land, and federal regulations enforced by the National Park Service prohibit possessing controlled substances in park areas. Maine's adult-use law doesn't apply there. Leave your cannabis at your rental or hotel before driving to Mount Desert Island, and don't use it before driving there either.
Maine's visitor rules fit on an index card: be 21, bring real ID, stay under 2.5 ounces, use it privately, don't drive, don't take it home. Have a look at the Rose Mary Jane online menu before you arrive, and we'll have your order ready when you get to St John Street.