I think the 'surf seasons' around here are generally accepted to switch a month earlier. I wouldn't classify Katia or Leslie as summer waves, despite both swells being well before September 21st. Similarly, i think most consider late november to be the start of winter with the water temps falling and the swells switching to shorter interval hit and run windswells.
Even so, I don't know how you can include the doomsday swell and say it is only a four. Those were the best waves in NJ since April 20, 2011, a spring swell.
http://www.surfline.com/surf-news/ea...-photos_54431/
Maybe I am inflating my 7-8 becuase of how bad the past two winters have been.