The beautiful, warm weather all year around in Greece lends itself for the perfect destination for everyone. No matter what season your calendar is showing, its mild climate along with the picturesque locations can make it be an escape for anyone trying to avoid the hustle and bustle of the peak season. The end of September is somewhat of a transitional period in terms of tourism. The weather is cooling down, but the water temperature is still warm enough to for a dive in that incredible deep blue sea of the Aegean or the Ionian sea. It can be the ideal time of the year, if you factor in the lower prices and the less tourists. Here is a list of the warmest islands for the month of September as presented by Trivago.
Elafonisos

Ikaria

Karpathos

Corfu

Syros

Kea-Tzia

Skopelos

Ydra