The extra people in the area and extra alcohol consumption, unfortunately, lends itself to more people behaving inappropriately.

South Coast Police District Superintendent Greg Moore said during this time of year one of the key risks is drug and alcohol anti-social behaviour.

"We do see a rise in alcohol-related violence and homicides at this time of year," Supt Moore said.

"If you see your mates are a bit vulnerable it might be a good opportunity to tap them on the shoulder and get them home safely or have a few waters."

Another key message from police is to be vigilant about locking car, boat and house doors.

Supt Moore said police see people gravitate towards tourism hotspots to check car doors, steal property and take advantage of people.

"This should be a happy time for people, we've got a lot of families coming to the area, but we really want to reinforce the message 'lock it or lose it'," he said.

"We do know that there are people out there that prey on opportunity and unlocked vehicles.

"So we're encouraging people just to make sure that they've locked their vehicles when they're unattended - that also carries on to boats."

Read more:

Thieves also have been using open doors and windows to access houses.

Safety and behaviour on waterways is a keen focus for police.

"Unfortunately, with the increase in volume on the waterways we do see a spike in accidents and safety issues."

"I can reassure the community that we're already out there on the waterway, we've had our police out there conducting safety patrols, pulling boaties over and checking the sobriety levels, if they've got life jackets on and that will be continuing right through summer as well.

"Whether it be boats or jet skis, or any other watercraft out there - be mindful of the rules and conduct your activities in a respectful and mindful manner. We want you to get home safely."