In reply to Flamingsarah:
Irox, Miltiadis and Eros on Telendos will give you afternoon shade, as will The Beach, Star wars (right of see breeze, late afternoon), and Milianos cave. Arginonta Valley & Black Buddha offer shade from late morning, Summer Time from early afternoon. If there is a breeze, it is sometimes possible to have two hours climbing with the setting sun, for example in Arhi far left...
There is more than these options, but these will keep you busy for a while!
Best thomas