With the mercury tipped to reach a record 29°c on Saturday, Surf Life Saving WA (SLSWA) is urging beachgoers to take care with no patrols scheduled.
Surf Life Saving clubs don't start patrols until October which has prompted SLSWA chief executive Paul Andrew to remind beachgoers to take care of their own safety.
“The only beaches being patrolled this month are City Beach (by lifeguards) and Scarborough and Trigg (by City of Stirling Beach inspectors)," he said.
Mr Andrew said the Westpac Lifesaver Rescue Helicopter would be in the air but no one would be on the ground at local Mandurah beaches.
“With Saturday’s temperature expected to top 30 degrees in Perth and reach the high 20s in the South West we expect large numbers of people to head to the beach," he said.
"Unfortunately history tells us that spring can be a treacherous time along our coast so we urge caution and common sense.
“Seventeen people drowned along the WA coast in 2013/14 and we don’t want to see a repeat of that this year.”
Given the unseasonably hot weather predicted for Saturday, rain and thunderstorms are set to develop by Monday, before clearing by Tuesday,
Mr Andrew said there were some simple precautions beachgoers could take to stay safe.
• Never swim alone
• Assess the conditions – be watchful for rips and large swells
• Be realistic about your swimming capabilities, especially if venturing back into the ocean for the first time since last summer
• Don’t drink alcohol and swim