Los Angeles gets a brief break from the heat Sunday, with partly sunny skies and a high near 83 degrees after an overnight low around 63. The cool-down will be short-lived, though, as temperatures begin climbing again Tuesday and continue rising through the weekend.
Cooler Sunday And Monday Ahead
Sunday will bring south winds around 5 to 10 mph. Monday will be sunny and slightly cooler, topping out near 80 degrees, while overnight temperatures settle into the low to mid-60s.
Patchy low clouds or fog could return near the coast late Sunday night into Monday morning.
Coastal fog is a familiar feature of Southern California’s weather, not necessarily a sign of incoming rain: the National Weather Service describes the marine layer as a persistent source of cool, moist air, low clouds and fog, with local terrain and distance from the ocean contributing to sharp temperature differences. That helps explain why the coast can stay cloudy while inland neighborhoods warm. The agency’s Southern California forecast handbook details those local effects.
Heat Builds From Tuesday Through Saturday
The forecast turns warmer Tuesday, when Los Angeles is expected to reach 92 degrees. Highs are forecast at 88 Wednesday, 93 Thursday, 97 Friday and 101 Saturday.
A short-lived cooldown does not erase the broader health stakes of hot weather across the county. The Los Angeles County Department of Public Health’s data brief counted 125 deaths attributed to heat-related illness from 2015 through 2024; it cautions that changes in recording practices complicate comparisons with earlier years and that heat’s role may be undercounted. The county identifies older adults, young children, outdoor workers and people with chronic conditions as especially vulnerable to heat.
Winds should generally remain light to moderate, mostly in the 5-to-10-mph range.
Rougher Surf And Coastal Flooding Risk
Beachgoers should be more cautious Monday and Tuesday as southerly swells push surf heights to roughly 4 to 7 feet along Los Angeles and Ventura County beaches. Around high tide, seawater could affect parking lots, bike paths and harbor walkways.
The concern is the combination of surf and high water, not just the wave height alone. In a Sept. 27 advisory for Los Angeles and Ventura County, the National Weather Service warned of flooding around high tide, including at parking lots, bike paths and harbor walkways. The advisory describes these coastal hazards.
