Portugal is great fun to visit, I was lucky to go to peniche/baleal area a few years ago.
Went in fall while surf contest was on, kept looking for smaller waves, paddling out into "looks like head high" that turned out bigger.
Didn't get a lot of wind, 4 sessions in 9 days I think. It was sort of between summer and winter seasons.
Nazare was starting to fire, about 25'.
Found myself surfing out in ~2-2.5m waves a couple of times, made me realize I am now a shoulder to head high kind of guy.
Farther south will be warmer and somewhat smaller waves, but proximity to lisbon etc may tilt you toward peniche anyway.
Obidos lagoon works for an alternative to DOH+ ocean when the swell is up.
If nothing else have a great time scouting out the peniche and algarve regions before you become a dotard.