Mykonos has a hot semi arid climate (Köppen;BSH) because of the low overall rainfall, although it has lots of Mediterranean characteristics and it is highly influenced by the Mediterranean Sea. The sun shines for up to 300 days a year. The rainy season lasts from October until March. Vegetation follows the typical pattern for the region and grows around mid-autumn and ends in the beginning of the summer. The average daily temperature in the Winter is around 15°C, while it is 27 in the summer. The average night temperature is 11°C in the winter and 23°C in the summer.
Because of the seasonal cool “meltemi” wind (similar to the other Cyclades islands) and the moderating sea, summer days are relatively cool, dry, sunny and pleasant. The reason for the low overall rainfall is the rain shadow of the Pindus Mountains, which dry out the westerly winds. Winters in general are mild and wet, with many sunny days even in mid-winter. Snow is infrequent and doesn’t stay long on the ground when it falls.