Overall, Portugal is considered a safe country to visit and live in. The crime rate in Portugal is relatively low compared to some other European countries, and violent crime is rare. However, as with any country, there are some crime and safety issues to be aware of.
In the larger cities, such as Lisbon and Porto, pickpocketing and petty theft can be a problem, especially in crowded areas and on public transportation. It is a good idea to keep an eye on your belongings and to be cautious of pickpockets when out and about.
In terms of natural disasters, Portugal is prone to earthquakes and wildfires, particularly in the summer months. It is a good idea to be aware of the local weather and to follow any safety advice issued by local authorities.
Overall, if you use common sense and take basic precautions, you should have a safe and enjoyable trip to Portugal. It is always a good idea to familiarize yourself with local laws and customs and to follow the advice of local authorities when traveling to a new place.