well you have plenty to choose from ! basically the whole coast is full of surf spots haha
I mostly know the spots around Lisbon but ask the locals for Porto, Portuguese people are really nice, i'm sure they'll help you.
The closest to Lisbon would be Cascais since its only a short train ride but it's usually quite crowded and you can find better waves for sure.
Then you have Ericeira, a nice typical town located in the north of Lisbon. Its a Surfing Reserve so you'll have plenty of spots to choose from but you have to go to Ribeira d'Ilhas (is the most famous one). Though beware of some locals they can be aggressive in the water from time to time. Oh and don't forget to walk around the town, its really pretty and you have to visit the Surfing Reserve building, its free and you learn a lot of stuff.
My favorite has to be Peniche, its where i learned how to surf ! Again you have plenty of spots around like Praia do Baleal, Lagide, Cantinho do Baia or the famous Supertubos. Once in Peniche you have two possibilities : walk or bike around to go to the "well known" spots or rent a car and go explore : there are plenty of secrets spots around and when the swell is good you can find some really good waves !
Plus there are plenty of surf shop or surfcamps around so you can fin a wetsuit and a board for a cheap price. Peniche is located in the north of Ericeira, about an hour drive from Lisbon. Its also in the south of Nazaré, if you go to Peniche, go to Nazaré you won't regret it ! Also there are plenty of spots on the way ! Aaaand if your wife or you get bored, there is a castle next to peniche in Obidos, i never visited it but it seems pretty cool and everybody talks about it !
You can also go to Santa Cruz (yes in portugal) the beach is pretty big and the waves are usually pretty good.
There are so many spots in Portugal, do your researches and you can find some amazing gems ! (don't forget to check the swell daily cause it can change pretty quickly so if it changes, just change of spot)
Oh and btw, it can get really foggy and cold in Peniche, there is this weird microclimate but if it does get cold you can always get to Ericeira usually when one is cold is other is better (just something i learned with the years).
Good luck for planning, Sounds like a nice trip tho
Hope you'll have a good time !
If you got any questions, I know Peniche like my back pocket so ask me !
