I think Egypt is still good around that period (about 80% >= 4bft), the season ends in October (but that doesn't mean there's no wind, in November it's about 60% >= 4bft in Northern Egypt). The best winds are from May to October.
They are many spots in Egypt and I don't know all of them, try to find some info on internet there's lots of info. Try http://www.club-mistral.com
and google... Ras Sudr, Hurghada, El Gouna, Dahab,... kitebeaches.com