Thunderstorms could foil Christmas plans in one state as the forecast is revealed

Australians are being warned to brace for a wet but warm Christmas Day this year.

Forecasters are predicting Sydney to be sunny as temperatures climb to 28C with a high chance of thunderstorms.

Those living in Melbourne are in for a hot but cloudy day with temperatures hitting 23C, according to Accuweather.

In Adelaide, families can expect highs of 26C in Adelaide, while Christmas Eve set to be cloudy.

Perth is set to reach a high of 29C across the three days, with Accuweather predicting Christmas to be warmed by “abundant amounts of sunshine”.

Meanwhile temperatures in Brisbane are tipped to reach 27C on Christmas Eve, with Christmas Day expected to hit a high of 28C with mostly sunny conditions.

Boxing Day appears to be the hottest over the three days at 29C.

Canberra is set to have a mostly sunny Christmas Eve and Christmas Day at 28C, while the Boxing Day temperature may drop slightly to 26C.

Hobart may be in for a rainy Christmas Eve at 18C, while showers are expected to clear for Christmas Day, which is also anticipated to hit 18C. The Boxing Day temperature is expected to rise to 19C; however, Accuweather has forecast cloudy conditions with the potential for showers.

Darwin is set for temperatures as high as 33C across the three-day period; however, plans may need to be moved indoors as thunderstorms and showers have also been forecast.

Bureau of Meteorology senior meteorologist Jonathon How said the bureau wouldn’t release a holiday forecast until later in the month; however, December was shaping up to be wetter than average.

“High chance of being wetter than usual across most of the country, especially the east coast,” a bureau spokesperson said.

“Same deal goes for Adelaide, Melbourne, and Hobart — a wetter than usual December.

“The main message for this week is it’s going be hot, humid and unsettled.

“There’s a chance of seeing that for the rest of the month, but as we know, all we need is that one good day on Christmas.”

Sydney’s maximum temperature average for this month is 25C, with Melbourne’s 24C, Brisbane and Perth at 30C, Adelaide and Canberra at 27C, Hobart at 20C and Darwin at 33C.