LOS ANGELES (CBSLA.com) — Sweltering heat will bake Southern California for a third day, but people fleeing to the beaches for some relief should be cautious of high surf and strong and dangerous rip currents.

A combination of high pressure and weak offshore flow will keep temperatures high, with triple-digit temperatures possible in some areas of Los Angeles and Orange counties, according to the National Weather Service.

A heat advisory will be in force in normally temperate Orange County Monday from 11 a.m. through 6 p.m., and a beach hazard statement will be in effect along the Los Angeles County coast through Monday afternoon. Forecasters say surf of three to five feet can be expected, along with dangerous rip currents.

“Rip currents can pull swimmers and surfers out to sea. Sneaker waves can suddenly wash beachgoers off of beaches and rock jetties,” an NWS statement said.

The rip currents made it a busy weekend for lifeguards, who performed 430 rescues Saturday and 238 Sunday. Fewer rescues are expected Monday.

A combination of sunny and partly cloudy skies are forecast for Monday, with expected highs of 88 in San Clemente, 94 in Newport Beach, Laguna Beach, Palmdale and Lancaster; 98 in Pasadena, 99 in Fullerton and Anaheim, 100 in Woodland Hills and 101 in Yorba Linda and Irvine.

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