Recreational marijuana is not legal in Hawaii, so the short answer to whether weed is legal in Hawaii is no for adult-use purposes. Possessing three grams or less is a civil violation with a flat $130 fine, and qualifying patients can use cannabis through the state’s medical program. Everything above three grams, and any sale or unlicensed cultivation, remains a criminal offense.
Recreational Possession and Fines
Hawaii sets penalties by weight. Under HRS § 712-1249, three grams or less is a violation rather than a crime, punished by a $130 fine with no jail time and no criminal record.1Justia. Hawaii Code 712-1249 – Promoting a Detrimental Drug in the Third Degree Three grams is roughly two or three joints.
More than three grams but under an ounce is a petty misdemeanor, carrying up to 30 days in jail and a fine of up to $1,000.2Justia. Hawaii Code 706-640 – Authorized Fines One ounce or more is a full misdemeanor with up to a year of imprisonment.3Justia. Hawaii Code 712-1248 – Promoting a Detrimental Drug in the Second Degree
Decriminalization only covers personal possession. There is no legal recreational retail market in Hawaii. No dispensaries serve non-medical customers, and no licensing framework exists for adult-use sales.
Selling or Growing Without a License
Selling any amount of marijuana is a crime, but it isn’t automatically a felony. Distributing less than one ounce is a misdemeanor with up to a year in jail and a $2,000 fine. Larger amounts escalate quickly:
- One ounce to under one pound: felony, up to five years in prison and a $10,000 fine
- One pound to under five pounds: felony, up to ten years and a $25,000 fine
- Five pounds or more: felony, up to twenty years and a $50,000 fine
- Any amount within 750 feet of a school or park: felony, up to five years and a $10,000 fine
Unauthorized cultivation follows a similar curve. Growing 25 to 49 plants is a class C felony carrying up to five years and a $10,000 fine. Growing on someone else’s property without permission is treated more harshly, with less than 25 plants on another person’s land carrying up to ten years.4State of Hawaii, Department of Health. Laws and Rules
Medical Cannabis and the 329 Card
Hawaii’s medical program is built around the 329 card, named for HRS Chapter 329. A licensed physician or advanced practice registered nurse in Hawaii must certify that you have a qualifying condition. The state’s list of debilitating conditions includes cancer, glaucoma, HIV/AIDS, PTSD, epilepsy, multiple sclerosis, lupus, rheumatoid arthritis, and ALS. You can also qualify if your condition or its treatment causes severe pain, severe nausea, wasting syndrome, seizures, or persistent muscle spasms. Since 2025, primary treating providers may certify patients for conditions not explicitly on the list when they determine cannabis is appropriate.5State of Hawaii, Department of Health. Qualifying Medical Conditions
Registration runs $38.50 for a one-year card or $77.00 for a two-year renewal. The physician evaluation is separate and typically costs $120 to $200.6State of Hawaii, Department of Health. In-State Patient Application
Visitors with a valid medical card from another state can apply for a temporary out-of-state patient permit for $49.50. The permit lasts 60 days, and you can hold a maximum of two per calendar year.7Department of Health. Out-of-State Patient Application The permit lets you buy from Hawaii dispensaries.
Medical Possession and Plant Limits
HRS § 329-121 defines the combined “adequate supply” a patient and caregiver may possess together:
- Three mature plants
- Four immature plants
- One ounce of usable marijuana per mature plant, up to three ounces total
That works out to seven plants and three ounces, not the four ounces and ten plants sometimes reported elsewhere.8Justia. Hawaii Code 329-121 – Definitions Every plant must be tagged with the patient’s registry number and the card’s expiration date, visible to law enforcement during inspection. Exceeding these limits or failing to tag properly can cost you your medical protections and open you to criminal prosecution.
Where You Can Legally Use Cannabis
Even with a 329 card, use is barred in most places outside a private home:
- Public parks and beaches
- Recreation and youth centers
- School grounds
- Moving vehicles, including buses
- Your workplace
When you move cannabis through any public area, it must be in a sealed container, out of public view, and cannot be opened or consumed until you’re in a private space.9State of Hawaii, Department of Health. Medical Cannabis Use and Restrictions Violations can lead to fines and seizure. Practically, medical use is limited to private residences, and even there a landlord or condo association may set its own rules.
Driving With a 329 Card
A medical card does not protect you behind the wheel. Hawaii’s OVUII law, HRS § 291E-61, covers marijuana impairment the same way it covers alcohol. A first offense brings a license revocation of one to eighteen months, and the court must impose at least one of the following: 72 hours of community service, 48 hours to five days in jail, or a fine between $250 and $1,000. Penalties escalate for repeat offenses. The Hawaii Judiciary has confirmed that holding a valid 329 card does not shield you from OVUII arrest or license revocation.10Hawaii State Judiciary. FAQ – Medical Marijuana Card and OVUII
Traveling Between Islands
Hawaii’s geography sets a trap. Flying or boating between islands means passing through federal airspace or waterways, and marijuana remains illegal under federal law. Even if you hold a valid 329 card and both islands recognize your status, carrying cannabis on an inter-island flight is a federal offense. The Department of Health warns patients that traveling with cannabis by any means, inter-island or otherwise, puts cardholders at risk of delay or arrest.7Department of Health. Out-of-State Patient Application Cannabis has to stay on the island where you bought or grew it. If you travel, buy from a dispensary at your destination.
Employment, Housing, and Firearms
Hawaii has no law protecting medical cannabis patients from workplace consequences. Employers can maintain drug-free policies, test for cannabis, and terminate workers who test positive even for off-duty medical use. HB 325 would prohibit employment discrimination against registered patients, but it has not been enacted as of 2026.
Tenants get more protection. Under HRS § 521-39, a landlord cannot evict you solely for holding a valid 329 card, and any lease clause allowing that is void. Two exceptions matter. If your lease prohibits tobacco smoking, the landlord can evict you for smoking cannabis. And a condo or planned-community association’s governing documents can override tenant protections and prohibit medical cannabis entirely.11Justia. Hawaii Code 521-39 – Medical Cannabis Tenant Use Eviction
The firearms consequence is the one most cardholders don’t learn about until it’s too late. Federal law prohibits any user of a controlled substance from possessing or purchasing firearms, and because marijuana remains a Schedule I substance federally, this applies to every 329 cardholder even though Hawaii authorizes the use.12Office of the Law Revision Counsel. 18 U.S. Code 922 – Unlawful Acts The Honolulu Police Department cross-references the Medical Cannabis Registry when processing firearm permit applications, and registered patients are denied.13State of Hawaii, Department of Health. Law Enforcement Lying on the federal firearms transaction form (ATF Form 4473) about drug use carries up to 15 years in prison and a $250,000 fine. If you own firearms and are considering a 329 card, consult an attorney first.
CBD, Delta-8, and Hemp Products
Hemp-derived CBD is legal in Hawaii, but only in certain forms. The Department of Health limits allowed CBD products to:
- Dietary supplements as tablets, capsules, powders, softgels, gelcaps, or liquids
- Topical products for skin or hair
Everything else is off the table. The state prohibits CBD in food, beverages including bottled water, gummies, vape liquids, and smokable hemp flower. If you’ve bought CBD gummies in other states, you won’t find them legally in Hawaii.
Delta-8 THC and delta-10 THC are explicitly banned. Since February 2022, Hawaii’s interim rules have prohibited cannabinoids created through isomerization, the chemical process used to make delta-8 from legal hemp. Retailers caught selling non-compliant products face fines of up to $10,000 per offense.14State of Hawaii, Department of Health. Statutes and Rules