Reports indicate that no residential areas are currently under immediate threat from the flames, which are largely burning in the forest.
According to reports, a wildfire is burning through a pine-covered area at Troezen, sending thick smoke across the region, the fire service said on Thursday.
Earlier, local authorities sent out a 112 warning message to locals, urging them to remain on alert and follow instructions.
Greek authorities have called for three villages to be evacuated.
Planned burns rid properties of vegetation that can send wildfires racing across the landscape
Four aerial firefighters have died, two have survived crashes and 7.8 million acres have burned so far this season
11 planes are assisting the efforts of the sizeable firefighting forces operating in the Kymi-Aliveri municipality
The fire is in an area of Corinth called Sofiko and is moving towards the famous historical site of Epidavros
Spirit Aerosystems admits that its drone exhibited "flight instability", leading to the crash and rare ignition of the battery, which caused the wildfire