Police officers are bracing themselves to deal with higher levels of drunken anti-social behaviour across WA this weekend.
Conditions are ripe for booze-related trouble, with the Ashes Test getting underway in Perth, scorching hot temperatures forecast and the advent of the festive season.
Commander Charlie Carver said police were putting extra resources on the streets to deal with the threat.
"The cricket is coming up. The temperature on Saturday and Sunday is forecast to be very, very hot," he said.
"What we are saying is be responsible, don't drink in the midday sun."
Cdr Carver said police would take a zero-tolerance approach towards drinking and drunken anti-social behaviour.
He said, for example, anyone caught drinking alcohol on beaches would be given a $200 on-the-spot fine.
Operation Unite will be held from this Friday evening until Sunday morning in WA and across Australia and New Zealand.
Cdr Carver said the extra police resources would comprise of largely more officers on the beat and mobile police vans.