Residents of the historic town of Marathon, 40 kilometres (25 miles) east of Athens, were among those ordered to evacuate Sunday.
“Everything is burning,” said Giorgos Tsevas, a resident of Polydendri village. “I have 200 olive trees there but now they are gone.”
On Saturday, Vassilis Kikilias, the civil protection minister, had warned that half the country was under a high-risk warning for fires due to high temperatures, wind gusts and drought conditions.
“Throughout the night, winds remained strong, creating dangerous situations. Unfortunately, their intensity is expected to increase in the coming hours,” Mr Vathrakogiannis warned.