When you think of the climate of Mykonos island, the meltemia (etesian winds) run into your mind. During August meltemia blow very strongly and are a severe trial. Same with that of the other Cyclades, the climate of Mykonos is typically Mediterranean, with mild winters and hot, dry summers.
You will always find the weather from April to August very sunny and bright weather. The island has a very law rainfall and for that reason it is using tankers to supply its population and the high tourism in water. But caution, this water is not drinkable!
Left image: waves provoked by meltemia
Climate and weather of Mykonos