Hi and welcome to the forum.
Its a pretty good bet the weather will be good but like anywhere else in the world it can change. Ive been going for years at different times of the year and mostly been very lucky with the weather but have had a poor July once.
Do you have any idea of the area want to stay ?
What sort of things do you like in a holiday, lively/quite / relaxing or manic ?
What sort of budget are you thinking of and how many in the party, children / adults etc ?