Meteorological truth: True autumn has not yet begun. This is a liminal month—the "second summer" ( Allou genitsa in folk tradition). The only hint of change is the shortening daylight and the first, rare, dramatic thunderstorms that break the four-month summer drought.
To experience Greece is to experience its autumn. It is the season of nostalgia (from nostos – return home, and algos – pain/longing), the bittersweet, beautiful turning of the year. Do not come for the summer. Come for the autumn. when is autumn in greece
If you want the deep, experiential answer: Meteorological truth: True autumn has not yet begun