San Diego

Southern California Braces for Cooler Temps with Coastal Areas to See Highs in the 70s

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Published on August 13, 2025
Southern California Braces for Cooler Temps with Coastal Areas to See Highs in the 70sSource: Andrewthebobo, CC BY-SA 4.0, via Wikimedia Commons

The National Weather Service San Diego has forecasted a slight cooling in high temperatures from Thursday through Saturday for the inland areas of Southern California. The highs on Thursday, Aug 14, are expected to be between 72 and 79 degrees for coastal areas, 80 and 86 for western valleys and inland Orange County, and a warmer 96 to 102 for the high desert. Predictions for Friday indicate even cooler temperatures, with coastal areas experiencing highs from 69 to 76 degrees and inland valleys from 81 to 92 degrees, as per the NWS San Diego.

According to an Area Forecast Discussion by the National Weather Service San Diego, "Not much change in high temperatures is expected for today with a weak low pressure system moving through California bringing cooling of around 5 degrees for inland areas for Thursday through Saturday." This cooling trend is bringing temperatures to 5 to 10 degrees below average for the coast and valleys, while desert temperatures remain average.

The marine forecast suggests a peaceful setting for those looking to take to the seas, with no hazardous conditions expected through Saturday. However, beachgoers should take heed as elevated surf and high rip currents are anticipated through Thursday due to a long period of southwesterly swell. The swell could potentially bring 3 to 5-foot waves, with local sets up to 6 to 7 feet along south-facing beaches.

The National Weather Service advises that the cooler temperatures will continue into Saturday, with highs near 70 degrees at the coast and into the 80s for the Inland Empire. Temperatures in the lower deserts will still hover from 102 to 106 degrees. A gradual warming is forecasted from Sunday into the middle of next week, characterized by high temperatures just a few degrees below average for coastal and valley regions, and around average for the deserts.