Cannabis smoking is legal for personal use in private areas but prohibited in public areas by the Public Health Act 2535 BE (1992) with the fine being up to 25,000 Baht (~US$700) and or imprisonment for up to 3 months. 

Cannabis dispensaries were available as early as April 2022. On June 9, 2022, all cannabis plant parts were entirely removed from the narcotic list, decriminalizing all cannabis-related crime. Around 4,200 prisoners were released as a result of the decriminalization on the same day.

The possession, cultivation, sale, and use of cannabis was criminalized by the Cannabis Act 2477 BE (1935) and again by the Narcotics Act 2522 BE (1979). In 2018, Thailand became the first Asian nation to legalize medical cannabis.

Although cannabis was decriminalized, smoking or vaping in public places is still subject to punishment as a public nuisance infraction.  

-THAILAND