A red flag was waving in the rain at Padre Balli park near Bob Hall pier on Saturday.
A red flag flying at the beach means that conditions are out of the ordinary and that strong winds and currents could be dangerous for non-swimmers and for children.
Adults are recommended to stay in waist-deep water and children should be kept along the surf-line.
If you get caught in a rip current do not try and fight it, experts say swim parallel to the shore. If you can't escape, just float or tread water while you wave for help.