Do your reading habits change in the summer? Do you take your books outside more? Do you curl up in the air conditioning? Do you read fluff instead of serious books? Are you too busy playing in the sun or gardening or whatever to read much at all?
I don't think my reading habits really change much during the summer months. After looking back over my reading lists from the past few years, it looks like sometimes I read more during the summer months and sometimes less, so I'd say time of year doesn't significantly affect my bookish habits. And I'm not really the outdoor type, so I'm not likely to do a lot of my reading outside -- and anyway, the summers are much too hot here in central Texas to do much reading away from the air conditioning. The only exception to that is when I'm at the beach. But even then, the type of books I read doesn't change -- I read pretty much the same genres year-round. So I guess you could say I'm decidedly set in my ways -- and too old to change now!