"The most recent data on drug use among students were reported in the 2015 European School Survey Project on Alcohol and Other Drugs (ESPAD). Lifetime use of cannabis and other illicit substances among Portuguese students was slightly lower than the European average (based on data from 35 countries), with lifetime use of new psychoactive substances much lower than the average. Similarly, use of cigarettes in the last 30 days was just below the European average and alcohol use and binge drinking in the last 30 days were much lower than the average. Lifetime use of cannabis showed an increase in the 2003 survey, but it has remained relatively stable since, as indicated in the three subsequent surveys."
European Monitoring Centre for Drugs and Drug Addiction (2019), Portugal: Country Drug Report 2019, Publications Office of the European Union, Luxembourg.