The country’s Mediterranean climate influences the weather in Greece. That said, you can also expect climate differences between regions. The northern parts of the mainland have colder winters and hot, humid summers. On the other hand, the islands to the southeast and the southern parts of the mainland have a more typically Mediterranean climate with milder winters and hot, dry summers. Generally, though, it can be said that Greece has warm summers and mild winters.
Broadly speaking, snow in Greece becomes less common the further south and the closer to sea level you go. Some higher mountainous areas can have alpine climates with heavy winter snowfall. However, it does occasionally snow in and around Athens. The northern parts like Thessaloniki are also known for cold winters, with temperatures averaging 43°F (6°C).
The hottest months of the year are July and August when temperatures can soar to 104°F (40°C). Rain starts in mid-October and can continue through February, punctuated by days with mild winter sun and clear skies.