Surfing in Canada?! Pish! Pounded by surf year-round off the Pacific, surfing is very possible here year-round. Water is always a cool 17°C, which is totally tolerable in a full wet suit. Numerous surfing stores rent longboards for C$25, plus $20 for full wet suits and booties.
Winter waves are larger, but decent waves can be found in the summer. There are numerous beaches where the waves strike, so one doesn't run across the problems of crowded waves, like in the south. The water is clear and the sand very fine, making Tofino a major mecca for surfing enthusiasts.