No, cannabis with significant concentration of THC is forbidden in Merida, but area cops and citizens are Alright Together with the people who smoke. The level of weed you carry shouldn't be larger than 10 grams Mexico's Supreme Court has decriminalised the non-public recreational use of cannabis by adults, https://cannabis-crew.com/2024/07/28/where-can-i-buy-some-weed-in-merida-mexico-and-nearby/