Internship doesn't just have to be in Portugal. Foreigners are also an option for some companies.
The developed international intership programs mostly last from 6 to 12 months and require language skills.

Meeting new cultures, investing in a professional career, networking, practicing new languages, developing skills are some of the many reasons that can justify joining this adventure.
Although it is a less common modality, there are companies where you may have the possibility of doing so.
Get to know the companies where you can have this opportunity.