S which have dozens of online dating sites for pretty much any niche you can imagine. There are really only a couple of sites in Portugal that are worth signing up for more on these sites below. With that said, with enough work on your part, you should be able to find some hidden gems in cities which are chock full of singles like Lisbon and Porto. I actually highly recommend you try to stay close to these cities in order to have the best chances for success. A woman who has only one picture posted, is wearing a tight bikini and making an overly suggestive pose are usually clear signals to steer clear.