We went down to Fistral for the weekend in January and although the weather was really bad we had a great week surfing. We stayed in Fistral itself which was nice. What we liked about it in January was the lack of crowds, it was cold but we had a lot of sunny days.
I took my own surfboard and checked the Newquay surf report each day. Many days were a little windy but we still had a good time. I did take my shortboard but to be honest it was better with a longboard which i hired from the local surf shop.