The climate in Santorini is characterized by an extended period of sunshine that starts in May and lasts until late September. Humidity levels are quite high and it is advisable to bring along a light jacket or sweater for the evenings, as the northern winds, like in the rest of the Aegean islands, are not rare.

Winter in Santorini is less cold than the rest of Greece and the average temperature is around 15C. Winter is the period with rainfall and strong winds.