Islands like Santorini do not have a natural water source – no river, lake, or dam, so mosquitoes are quite uncommon.
Are mosquitoes bad in Greek islands?
Mosquitoes are one of the most insidious creatures on the planet. Carrying malaria in many parts of the world, they cause literally millions of deaths every year. In Crete, Greece, and most Mediterranean countries, mosquitoes are more of a pest than life threatening.