Residents in Australia’s southernmost state have awoken to a white Christmas.

Kunanyi/Mount Wellington in Hobart received a dusting of snow this morning and at 8:40am the mercury on the mountain had fallen to minus 1.4 degrees Celsius.

Snow on rocks and trees

Kunanyi/Mount Wellington is a wintry sight on Christmas morning. (Supplied: Hobart City Council)

snow and grey cloud

Chilly conditions on Kunanyi/Mount Wellington on Christmas morning. (Supplied: Hobart City Council)

The Bureau of Meteorology says rain showers are falling as snow above 700 metres.

The central midlands also received a Christmas morning dusting of snow. 

Snow covering road signs

Miena, central Tasmania, looks more like a northern hemisphere Christmas postcard. (Supplied: Sand Van)

snow covers a boat

Not a morning to inspire boating at Miena. (Supplied: Sand Van)

Meanwhile, temperatures are expected to be much hotter elsewhere in the country.

Perth is forecast to have the hottest temperatures of all capitals on Christmas Day — a mostly sunny day reaching 40.

Brisbane is expected to reach 35, with a chance of showers and a possible thunderstorm. 

A maximum of 30 and wet weather is forecast for Darwin.

Canberra is sunny and expecting a top of 28.

Adelaide will see cloudy and windy conditions with temperatures peaking at 24.

It will be cloudy with a slight chance of a shower in Sydney, with a top of 24.

Melbourne will be similar to Hobart, minus the snow — cloudy with a slight chance of showers and a maximum of 17.