never been to Portugal,but definitely seened plenty of epic footage.the whole coast from spain to Portugal has points,reefs,big waves,etc.not too crowded too.best season to go is American winter time.all the storms that give us surf go offshore and send great waves to Europe.
I went nearly ten years back in a December, best trip of my life! Go to Peniche. it is were supertubos and many other breaks are. It is a peninsula so there is a wave somewhere most days, be careful of urchins