Australian Government Bureau of Meteorology Western Australia TOP PRIORITY FOR IMMEDIATE BROADCAST Heatwave Warning Issued at 01:50 PM WST on Sunday 14 December 2025 Valid for Sunday 14 December 2025 to Wednesday 17 December 2025 Warning for the following areas: South West, South Coastal, South East Coastal, Great Southern and Central Wheat Belt Cancellation for the following areas: Lower West Safety Advice: Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell. Seek a place to keep cool, such as your home, a library, community centre or shopping centre. Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home. If available, use fans or air-conditioners to keep cool. Maximum temperatures in the mid thirties to low forties and overnight minimum temperatures in the mid teens to mid twenties. Severe heatwave conditions will continue over the southwest before contracting to eastern parts of WA by the middle of the week as a trough moves inland from the west coast. Severe heatwave conditions have eased over the Lower West, however low intensity heatwave conditions may linger for the next few days. Locations likely to be impacted include Hopetoun, Hyden, Katanning, Lake Grace, Manjimup, Mount Barker, Narrogin, Ravensthorpe and Wagin. The next heatwave warning will be issued by 2:00pm WST on Monday 15 December 2025