In general most parts of Greece will be cloudy with possible rain and storms  and temperatures not higher than 31 degrees Celsius.

In Athens the weather will be generally clear while  later in the afternoon will be cloudy and will develop rainwater mainly in the north. Temperatures will vary from 19 to 30 degrees Celsius.

In Thessaloniki the weather will be cloudy and later in the day will appear rain and storms. Temperatures will vary from 19 to 29 degrees Celsius.