Hello!! I do not surf, but my hubby has surfed for 35 years.. He will surf here (San Diego) year around, but surfing is much better during the winter months. Waves are much smaller in the summer. The water is warmer tho!!!
So, surfing is still fun in the summer, but it is "long board" surfing due to the smaller waves. I boogie board in the summer and it is great fun. I won't in the winter as the ocean is around 58-64 degrees. BRRRRRR!
So, his favorite spots are Sunset Cliffs, Scripps, and somewhere in Del Mar. If you need more exact descriptions of locals, I can get them from the surfer in the family!! Have fun!!