what makes a Song the song of summer?

when you think of a Song during the Summer do you feel it has to say that it reflects June,July,August&September? does it have to say that the days are Hot&the sky is Blue? what makes you think of a Song for Summer? do you need it all spelled out to you? reason why I ask is because here we are late in July 2006 Summer&Still not one song truly has been the song of the Summer. nothing has spoken to me&made me feel like it is Summer. yeah there are cuts that I grooved to in months gone by,but nothing has said that it is truly summertime&catch those hot rays from the sky.