Cold temperatures, snow, rain and storms are forecast to hit parts of Australia.
The Bureau of Meteorology said the focus of rainfall and snow activity will be around Victoria, southern NSW, and eastern and southern Tasmania in what it is calling a "cold outbreak".
Snow could also develop on the southern and central tablelands, and possibly the northern tablelands. Ski resorts could receive an additional half a metre within a few days.
Monday is expected to bring another wave of rain to southern Victoria, while showers will continue in parts of South Australia and inland NSW.
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Hazardous surf conditions are forecast to hit the NSW coast, particularly around the Illawarra and Hunter regions. Swell conditions are expected to be hazardous for coastal activities such as rock fishing, boating, and swimming.
Larger waves are expected to start developing offshore on Sunday night, and will continue to become stronger on Monday night, with some offshore waves expected to reach four to five metres.
Brisbane
On Monday, Brisbane is forecast to have mild weather, with a minimum of 9 and a maximum of 20 degrees. It is expected to be partly cloudy, with light winds and a low chance of rain.
Sydney
The weather will be cooler in Sydney, with a minimum of 8 degrees and a maximum of 20. There will be northwesterly winds, and a 40 per cent chance of rain, according to the BoM.
Melbourne
Melbourne is expected to experience a high likelihood of showers, accompanied by southwesterly winds. The temperature is also expected to be cool, with a minimum of 8 and a maximum of 14.
Canberra
The capital city is set for cold weather on Monday, with a minimum of 0 and a maximum of 11 degrees. It is likely to be cloudy with winds, and there is a high chance of showers in the morning and afternoon.
Hobart
In Hobart, rain is almost certain on Monday. It is expected to be cloudy with winds and temperatures ranging from 8 to 13 degrees.
Adelaide
Adelaide is also set for cool weather, with a medium chance of showers in the morning and afternoon. Temperatures are expected to range from 6 to 16 degrees, with winds forecasted throughout the afternoon and evening.
Perth
Unlike the eastern states, Perth is expected to be sunny on the public holiday. Temperatures are expected to hit a minimum of 7 degrees and a maximum of 22 degrees.
Northern Territory
Darwin is expected to be warm, sunny and dry on Monday, with a minimum of 19 and a maximum of 30 degrees forecast.
