The weather is expected to be mostly sunny with relatively mild temperatures on Christmas day, Monday, the National Meteorological Service said.
Some clouds are expected in the west and over the southeastern islands during night and in the morning.
Winds will register 2-4 on the Beaufort scale, with south-southwesterly winds of up to 5 on the Beaufort scale in the east and south.
Temperatures are predicted to range between 5C and 21C in the north, from 9C to 21C in the west, between 6C and 23C on the eastern mainland and from 12C to 21C on the islands.
The weather in Athens is forecasted to be sunny, with temperatures between 9C and 22C.
In Thessaloniki temperatures will range from 8C to 20C.
