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 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 maximum of 20. There will be northwesterly winds, and a 40 per cent chance of rain, according to the BoM.

Melbourne

Melbourne will have a high likelihood of showers, along with southwesterly winds. The temperature is also expected to be cool, with a minimum of 8 and 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, and there will be winds 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