Efforts to control a bushfire threatening multiple coastal towns north of Perth have continued overnight, with hundreds of firefighters battling the blaze.

The volunteer aged in his 60s was at the scene of the fire near Wedge Island which is about 150km north of the city when he was injured. He was flown to Fiona Stanley Hospital in a stable condition yesterday afternoon.

An evacuation warning remains in place as an enormous bushfire bears down on the town of Cervantes on the coast of Western Australia.

An emergency warning is still in place for a blaze threatening the town of Cervantes, 200 kilometres north of Perth, with strong winds and high temperatures expected to test fire crews today.