A typical Aussie Christmas has been forecast for most of the country: hot and dry.
Fine conditions are predicted for all capital cities on Tuesday, except Darwin where there is a 60 per cent chance of rain and a possible thunderstorm, according to the Bureau of Meteorology.
"We want people to get their Christmas prawns out of the way (in Darwin)," senior meteorologist Claire Yeo told AAP.
While temperatures are expected to reach 34C in Darwin, Adelaide is likely to be the hottest city with a maximum of 35C.
A high-pressure system covering most of the country means the chance of rain is low and temperatures should be high.
Canberra will experience a top of 32C, Melbourne will reach 31C and Brisbane 29C with a 20 per cent chance of rain.
A light breeze is expected to pass through Sydney, where the bureau has forecast a low of 17C and high of 28C.
Despite the "beautiful" days ahead, Ms Yeo is warning people not to become complacent.
Christmas could mark the start of a low-intensity heatwave inland, with temperatures increasing from the northwest coast of Western Australia extending down into the southeast, Ms Yeo said.
"When you have very hot temperatures bordering into that extreme and a lack of rainfall, it always leads to the potential of fire dangers increasing," she said.
It's going to be a perfect Christmas Day for some backyard or beach cricket across Victoria, according to the Bureau of Meteorology.
Santa won't need to rug up as he delivers presents across Victoria as the warmer weather has finally arrived.
The Bureau of Meteorology says Christmas Day will be a sunny 26C in Melbourne and could hit 30C in other parts of the state.
Senior forecaster Beren Bradshaw says there will be some light winds across Victoria on Tuesday, but it will be breezier in coastal areas.
So it will be perfect weather for backyard or beach cricket and eating Christmas dinner alfresco.
Santa and his reindeer might break a sweat while delivering presents too, with the temperature not tipped to drop below 17C until early on Christmas morning.
Perfect conditions are also forecast for the Boxing Day Test.
"We can expect some morning cloud and a sunny afternoon with some light winds and a top of 26C," Ms Bradshaw told AAP.
