Firefighters work to stop a forest fire from reaching the village of Avelar, central Portugal. Picture: Armando Franca/AP

Madrid - More than 2 100 firefighters have been deployed across Portugal to combat fires in more than 170 locations barely two months after a series of devastating fires in the country claimed 64 lives.

The mass deployment also involved a total 680 vehicles and 15 aircraft, the Portuguese civil defence reported in Lisbon on Friday.

A man on the balcony of a house looks up at a forest fire raging on a hillside above the village of Avelar, central Portugal. Picture: Armando Franca/AP

The fires were at their worst in the municipality of Abrantes, some 130 kilometres north-east of Lisbon. On Thursday, the residents of four villages under immediate threat from the intense blazes were brought to safety.

Some of the mostly elderly residents were in a state of panic, the television news station TVI24 reported. In the village of Aldeia do Mato, an 80-year-old woman's house was completely destroyed by flames.

Portuguese National Republican Guard firefighters work to stop a forest fire from reaching the village of Avelar, central Portugal. Picture: Armando Franca/AP

A highway and a country road were also closed off for several kilometres overnight on Thursday due to the billowing flames, but have since be reopened.

Despite a persistent drought in the region and strong winds, almost all of the fires were brought under control during the night, said Maria do Ceu Albuquerque, mayor of Abrantes, to local TV station RTP.

A number of people have been killed in forest fires in central Portugal, many of them trapped in their cars as flames swept over roads. Picture: Armando Franca/AP

"There is only one dangerous fire location left, but it will still give us a lot of work," she said.

In many regions, highly flammable eucalyptus trees have been the main cause of the fires. This had also been the case with the severe fires that tore through the Pedrogao Grande municipality in the centre of the country, some 50 kilometres south-east of the city of Coimbra, in June.

In addition to the 64 fatalities caused by the June fires, 20 000 hectares of land were destroyed. According to official data, around 138 000 hectares of forest have been destroyed in Portugal since January.

The country is experiencing its worst year for fires since 2005, when 321 000 hectares were destroyed by forest fires.