With large gatherings limited across the state due to COVID-19, people are being encouraged to have small COVID-safe gatherings with family and friends or book a restaurant in their local area to help support businesses.

However, a highly visible and mobile police operation will be in place tomorrow for those who choose to reflect and celebrate outdoors. General duties officers, assisted by specialist police, will be deployed across the state to ensure a safe and secure environment for everyone.

Operation Commander Assistant Commissioner Michael Willing said with a smaller number of events and careful crowd management plans, it's more important than ever to be patient and plan ahead.

"Australia Day 2021 is a day to reflect, respect and celebrate the Australian spirit, so we ask the community to be patient and respect each other and any restrictions in place," he said.

"People may be marking the day differently, but as with any major event, police will still be out and about across the state focusing on public safety, alcohol-related crime and anti-social behaviour."

Minister for Police and Emergency Services David Elliott said this year's Australia Day will still be safe and fun for everyone.

"The past 12 months have been a trying time and we know that many have done it tough, first with bushfires and then living through this global pandemic," he said.

"Australia Day is a time to celebrate and reflect upon the Australian spirit, and our resilience and mateship shown during times of hardship.

"Let's remember that, particularly this year, and ensure we all have an enjoyable weekend celebrating everything that is great about being Australian."

Police are also urging the community to monitor weather reports and follow health and safety advice, with the Bureau of Meteorology forecasting hot weather to continue.