September is the best time to be there. And yes, closings are the peak. But that's true only if you just think clubbing.
If I could do my first time next summer I'd like to go there in mid-July. It's very hot and sunny. All clubs, bars, shops and restaurants are open. And that is the time when everyday you can see more clubbers coming to island. It feels like beginning. When you do closings it feels like world coming to an end...