The General Secretariat for Civil Protection has warned of a very high risk of wildfires Friday due to the combination of dry conditions and strong winds.
The agency highlighted a Category 4 risk for Attica, the northern Aegean, the Peloponnese and mainland Greece.
On Friday, firefighters battled three large blazes. A unit of 33 was sent to tackle a wildfire on Mount Penteli, north of the capital, Friday afternoon with four water-dropping aircraft and two helicopters aiding efforts.
A larger contingent of 52 firefighters battled a blaze in Tanagra, also north of Athens.
Another fire that broke out near Artemida, eastern Attica, earlier in the afternoon was contained before it could threaten homes.