3000 hours of sunshine per year!
July and August are the most popular months for school vacations. Don't worry, air-conditioning is available everywhere! The nights are warm, and on the islands, you won't even need a sweater. Temperatures are rising and fortunately the winds, like the meltemi, are there to cool you down. Another option? Stay under the plane trees of Pelion and enjoy the sun and sea without the summer heat.
You think Greece is too hot a destination? Visiting the country outside of the summer period is a great option to avoid the high temperatures and crowds. The weather is good everywhere from October to May. Sometimes it is 20°C in November; so your All Saints' Day vacation can feel like spring!
Visite Crete or the island of Tinos in the spring, when nature awakens and covers the countryside with wild flowers, or participate in the Orthodox Easter celebrations. All of these are still true unknown pleasures!