Greece has a warm Mediterranean climate. Summers in the lowlands are hot and dry with clear skies. The mountain areas are much cooler, with considerable rain in winter. The weather in the Greek Islands is generally beautiful with cloudless blue skies, especially in summer.

Summer weather in the islands begins in May with daily highs in the mid-20s. By July the daytime temperature is often in the 30s. July and August are the peak summer months, and temperature will rarely drop below 20°C even at night. On occasion when the air is calm the daytime heat can be oppressive inland or in a large town such as Athens. Fortunately the islands are relieved by the cooling "Meltemi" winds - sea breezes that blow from the north and north-west.

The winds are strongest in July and August when they are needed the most. Mid-May to Mid-September is very dry, while July and August are unlikely to see any rainfall at all. Winters are mild and wet - somewhat akin to an English spring. Temperature will generally be in the low to mid-teens, although a sunny day can sometimes see the temperature creep up towards 20°C.

Winds, Rainfall & Temperatures in the Aegean Sea

During the summer months and especially between mid July and mid August, strong winds are common in the Aegean Sea. These winds are called "Meltemi" and blow from North/Northeast. "Meltemi" starts suddenly and can blow continuously for several days. Wind conditions in the Ionian are generally 1-2 beaufort less than in the Aegean.