Meltemi and Vorà
Typical of these clouds is to dissolve rather quickly, even if often are rather large, and not to give sequel to rainfall.
If then the winds that influence them blow from the North/North-West it is likely the arrival of the traditional dry and tense wind, called "Meltemi" in the summer period from June to September and called "Vorà" in the remaining periods of the year.
The differences between Meltemi and Vorà are not on the sector of origin which is always the same and not even on the intensity, which can always be considerable (with maximum gusts at 125 km/h recorded here in Xerocampos) but on the duration of the perturbation which in the case of Meltemi is generally longer (the elderly inhabitants of the place say that when it blows it does so for periods of at least 3 days).
Other natural signs of impending weather change (to be taken into consideration if you intend to practise yachting or to camp in these areas) are the annoying presence of flies (which become aggressive probably because they perceive better than us the lowering of atmospheric pressure that precede and accompany the Meltemi) and the colors of the sea which become very clean and well-defined taking all shades of blue and green.