Wikipedia: Legality of CannabisPersonal consumption limit is 2.5 gram per day of marijuana and 0.5 gram per day of hashish. One may possess not more than 10 daily doses, otherwise it may be categorized as trafficking. Consumption still has a penalty that may be a fine or other penalty. Cultivation, even if for personal use, is still totally illegal and cultivation of even one plant is assumed to indicate involvement with trafficking. Possession of seeds is also illegal and despite there being several "head shops" or "grow shops" in Portugal, they are not allowed to sell seeds. It is also true that the number of grow shops has increased over the past few years, which seems to indicate that cultivation for personal use (in Portuguese: auto-cultivo) is becoming a more common practice. There is also a forum, named hortadacouve, formed by people who cultivate for personal use.
It is very common in Portugal to see young people smoking in concerts and other party areas. There has also been, in the last decade, an increase of cafés where it is possible to smoke, although it is never an "open" experience, because there is still a lot of intolerance to public consumption of cannabis as a day to day practice.