Here's a blast from the past. "Beach Baby" by the First Class. They were actually from Scotland (if I remember right) and had never seen Southern California ever.
But also almost any Beach Boy song, sums up summer. ( my fav happens to be Sloop John B)
"All I ask of you is one thing: please don't be cynical. I hate cynicism -- it's my least favorite quality and it doesn't lead anywhere. Nobody in life gets exactly what they thought they were going to get. But if you work really hard and you're kind, amazing things will happen."
Conan O'Brien