Out-of-control bushfires that have claimed at least 10 homes in metropolitan Perth have shown no sign of easing overnight. 

Authorities warn strong winds and high temperatures mean it could be days before crews bring the fires under control after they ripped through semi-rural properties and threatened other homes on Thursday. 

It was too late for many people to leave in eight suburbs in the City of Wanneroo and the City of Swan, in Perth’s northeast. 

More than 150 firefighters worked through Wednesday night to save homes as the massive blaze forced hundreds of families to leave as embers rained down. 

Teams worked on Thursday to assess damage to properties so evacuated residents could be informed, with fears more destroyed homes would be found.

More than 1000 people were also left without power as critical infrastructure was brought down in unforgiving temperatures that peaked at 40C, with winds of up to 80km/h fanning the flames. 

East Wanneroo Primary School and Wanneroo Secondary College have been closed.

Emergency Services Minister Stephen Dawson said a huge amount of firefighting resources, including multiple water bombers, were being used to battle the blaze.

“This is a significant fire … this will be a long-running incident and could take some time before the fire is brought under control given the situation we find ourselves in terms of the wind and high temperatures,” he said.

A number of firefighters have suffered smoke inhalation and minor injuries and one crew was involved in a “burnover” incident while in a truck.

After peaking at 39C on Thursday, the forecast is set to ease to 35C on Friday and Saturday before rising to 37C on Sunday.