So far, more than 2,000 people have been evacuated in total, a BBC report said.

While fire in Evia, the country's second-largest island, is the most severe, dozens of smaller fires are blazing across the country.

Tourists and locals were evacuated by boat from Evia, the report said.

The blazes have destroyed houses and power lines.

Wildfires had erupted in Greece since the beginning of August when Turkey was combating over two hundred fires that spread across 1,600 square kilometres.

The 2021 Turkish wildfires are considered the worst ever wildfire season in the country's history.

The blazes erupted after the country boiled under a heat wave with temperatures peaking as high as 45 degree Celsius.

This was the most severe heat wave Greece has faced in the last 30 years.

Heatwaves are caused because of human-induced climate change and the subsequent hot, dry weather is fuelling the forest fires.

"We have ahead of us another difficult evening, another difficult night," Civil Protection Deputy Minister Nikos Hardalias said on Sunday, reported BBC.

"On Evia we have two major fire fronts, one in the north and one in the south," he said, adding that the situation around the capital Athens had improved, the report said.

"We are afraid of the danger of flare-ups," Hardalias warned, it added.

The administration says the more fires can erupt and the possibilty is high in many areas, including Athens and Crete. Greece's Prime Minister Kyriakos Mitsotakis has alerted the country about a "nightmarish summer" of prolonged forest fires, said the BBC report.

During the last 10 days, over 56,000 hectares (140,000 acres) have been charred in Greece, according to the European Forest Fire Information System.

On Saturday, smoke from a fire burning north of Athens on Mount Parnitha spread across the capital.

A hotline for people with difficulties in breathing has been set up, according to the Associated Press.

Though fires have receded but the prediction of strong winds have raised concerns that the fire could flare again.

Some countries have offered support to Greece. The UK, France, Romania and Switzerland have dispatched a team of firefighters to the country, said the BBC report.