What.. When to go.. Where to go..
 
As a result of the country's geographical location, its climate at the Mediterranean coast includes mild winters and dry warm summers cooled by a system of seasonal breezes.

It is better to avoid the high peak season (July 25th - September 10th).  Not only most of the services offered (including charter fees of all sorts) are more expensive, but you will find most of the destinations -especially the popular ones- crowded and overpopulated.
     Click for Dubrovnik, Croatia Forecast