Weather Warning

This warning affects:Hunter, Metropolitan, Mid North Coast, North West Slopes & Plains, Northern Rivers and Northern Tablelands.

Heatwave warning

  • Issued by the Bureau of Meteorology

IDN21013

Australian Government Bureau of Meteorology
New South Wales

Heatwave warning

Issued at 2:54 AM EDT on Monday 22 Dec 2025.

Heatwave Situation for day 1

Heatwave Situation for day 2

Heatwave Situation for day 3

Heatwave Situation for day 4

Maximum temperatures are in the mid to high thirties and overnight minimum temperatures in the mid teens to mid twenties. Heatwave conditions are expected to continue to contract to the northeast of the State over the coming days. Severe heatwave conditions have eased about the southern coastal areas and the central ranges. Maximum temperatures are in the mid to high twenties with overnight minimum temperatures ranging from around ten degrees across the central ranges to the mid teens closer to the coast. Low intensity heatwave conditions may still affect these areas over the coming days. Locations likely to be impacted include Sydney, Armidale, Grafton, Gosford, Hornsby, Lismore, Liverpool, Mona Vale, Richmond and Taree.

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.

The next heatwave warning will be issued by 3:00pm EDT on Tuesday 23 December 2025