Do exchange rates for typical european holiday rates get better after school holidays or does it make no?

Difference? i am due to travel to cyprus and croatia in september and wondered whether i would get a better exchange rate for my gbpound if i waited?
Answer
No, the exchange rates and money markets have nothing whatsoever to do with school holiday s - in fact i would actually buy now as the pound againest the euro is going up and up. the only thing that school holiday s impact on, with regard to travelling are flight and hotel costs.