if you have a month off, why settle on one area? do a road trip through france, portugal and spain and hit up many different spots on the way.
portugal is my favorite, peniche just an hour outside of lisbon, has some world class waves like Supertubos, as well as some great and more mellow breaks around the area. most of the surf camps and hostels are pretty cheap, i stayed with Baleal surf camp, just a few minutes walk from the beach and cantinho de bahia, where there are many great beach breaks, plus some more challenging breaks just a short drive away.
lagos in the south also has lots of decent breaks within a few miles drive and again really cheap accomodation for you too. plus a great party atmosphere.
if you are driving down the portugese coast you will find awesome waves everywhere and plenty of accomodation to boot.
get yourself a copy of the stormriders guide to europe, or footprints surfing europe, which should give you a few more ideas.
and like surferdude_scarborough said
dude 5 posts down, viewtopic.php?f=4&t=15736