Fun topic! For me, that would be the entire album of "Zingalamaduni" by Arrested Development, which came out mid June in 1994. I was 15 at the time, and junior high was coming to an end. In those days, I had no interwebz to tell me when my favourite group was coming out with a new album, so it was a great surprise to walk into Sam the Record Man in Brunswick Square and see it sitting on a shelf; I returned the next day with monies and listened to it all summer. Their music has always been really bright, warm and positive (in spite of a few downers), perfect for warm weather.
The Crow soundtrack was another album I listened to quite heavily that summer, staying up late and reading comics. I listened to it a lot the following summer as well, letting it motivate me as I worked hard on my
Mario Paint Crow request that got played on Much RSVP (sadly, I missed the episode).