Australia bushfires: Village of Balmoral almost completely wiped out by blazes

A village southwest of Sydney has been almost completely destroyed by bushfires over the weekend.

Balmoral, in the Wingecarribee Shire Council area, was first hit by fires on Thursday before the flames returned on Saturday.

The village has a population of around 400 people and around 150 houses.

"We've got the devastating news - there's not much left in the town of Balmoral," NSW premier Gladys Berejiklian said on Sunday.

"Many residents have had that news in the last little while. Communities like Buxton and others have also been very hard-hit."

At least nine people have died in the fires so far.

Last week, two volunteer firefighters died when a tree fell into the path of their vehicles. Both men were revealed to be new fathers, with children born days apart. Three other firefighters were also injured in the incident.

Almost 100 fires continue to burn in NSW, and the blazes have now spread to South Australia. The premier of South Australia, Steven Marshall, said 72 home were lost in the Adelaide Hills.

One man was found dead in his home in the town of Charleston over the weekend, with Marshall describing "scenes of absolute devastation" in the area affected by the fires.

Smoke from the blazes had also spread over Adelaide, with authorities issuing a statewide smoke alert.

More than 700 houses across the country have been destroyed and millions of hectares of land scorched since September.

Prime Minister Scott Morrison has faced increasing criticism for his handling of the disaster. 

Following the death of the two firefighters, he cut short a family holiday to Hawaii and returned to Australia.

Acknowledging that his absence had caused "great anxiety", he apologised for leaving the country at such a crucial time.

Temperatures across Australia have sweltered in recent weeks, with temperatures hitting record levels in many parts of the country.