Pref. going back in months and years.
I'm having a contest with couple Sydney mates to know who's having the worst W/S season ever - them or us here (Great Lakes). Want to know if they're just whingeing, or is it that bad?
bom offer historical data for selected locations. scroll down the results page to get the past months data
www.bom.gov.au/climate/dwo/index.shtml
(i know,i know, i should be on the beach causing havoc to other water users, or running down windsurfers, not giving advice)
I'd suggest "How good a season is" is directly related to what days the wind lands on. If work, friends, family, social engagements all land on the choice windy days all summer, then "it's the worst summer ever" .. 
