A heat wave in Perth that has brought temperatures close to 40 degrees is forecast to continue until New Year's Day.
Two people have been admitted to hospital in the Western Australian city for heat-related illnesses over the past few days, the ABC reports.
Western Australia's Department of Health is urging people to stay out of the heat.
State health coordinator Dr Tarun Weeramanthri says children, the elderly and those with chronic medical conditions are the most prone to heat stress.
He says symptoms could range from nausea and headaches to serious conditions including heat stroke.
He advised staying indoors during the heat of the day, keeping the house well ventilated or using air conditioners, drinking plenty of fluids and avoid over-consuming alcohol or caffeinated drinks.