Best time of year to surf??

I've been out surfing three times now...started at the beginning of August and noticed that it's been real choppy. Yesterday I went out and it was like a washing machine.
Do you guys surf year-round or do you only surf at certain times? If so, when is the best time of year to surf?
Do you guys surf year-round or do you only surf at certain times? If so, when is the best time of year to surf?