Record-Breaking Heat Wave Grips Southern California

Southern California is bracing for a prolonged and intense heat wave, with temperatures expected to soar 15 to 25 degrees above normal across the Los Angeles region. A heat advisory is currently in effect for coastal areas from San Diego County to San Luis Obispo County, lasting from Thursday, March 12th, through Friday, March 13th, 2026.

Heat Advisory and Expected Temperatures

The National Weather Service warns of widespread temperatures ranging from 90 to 100 degrees Fahrenheit. The unseasonable heat is expected to persist into Friday, with a slight weakening over the weekend before intensifying again next week. This extended period of extreme heat raises concerns about increasing heat stress, particularly in areas unaccustomed to such high temperatures, where residents may lack adequate cooling systems.

Record-Breaking Temperatures Forecasted

Several cities are predicted to break or tie existing temperature records on Thursday. Forecasters anticipate:

• Pasadena: 95°F (surpassing the 92°F record set in 2007)
• San Gabriel: 95°F (surpassing the 93°F record set in 2007)
• Burbank: 95°F (surpassing the 93°F record set in 2007)
• Long Beach: 94°F (potentially breaking the 92°F record set in 2007)
• Santa Monica Pier: 85°F (exceeding the 78°F record from March 12, 2015)

Coastal Conditions and Beach Warnings

A lack of onshore wind flow will contribute to the prolonged heat, offering little relief along the coastline. But, the Los Angeles County Department of Public Health has issued warnings against swimming at several beaches due to high bacteria levels, including:

• Santa Monica Pier
• Mothers Beach in Marina del Rey
• Near the creek and the Pulga Canyon storm drain at Will Rogers State Beach
• Near the restrooms at Leo Carrillo State Beach
• Near the Pico-Kenter storm drain at Santa Monica Beach
• Near the Castlerock storm drain at Topanga County Beach

Health Concerns and Safety Recommendations

Public health officials urge residents to seek medical attention if they experience symptoms of heat stroke or heat exhaustion, such as dizziness, nausea, rapid heartbeat, confusion, or fainting. According to Los Angeles County’s health officer, Muntu Davis, heat causes more deaths annually in the U.S. Than floods, storms, and lightning combined. Those most vulnerable include older adults, young children, outdoor workers, athletes, and individuals with chronic medical conditions.

Looking Ahead: Continued Heat and Fire Risk

While temperatures will cool slightly inland on Friday, remaining high, another round of highly hot conditions is expected to sweep into Southern California next week, peaking on Tuesday and Wednesday. The National Weather Service anticipates issuing additional heat advisories and potentially breaking more records. Warm overnight lows are too expected. This persistent heat could jeopardize monthly temperature records.

The recent heavy rainfall has reduced the immediate risk of widespread fire weather. However, the drying vegetation increases the potential for fires in grass-dominated areas. Continued warm, dry conditions throughout the summer without further rainfall could set the stage for an active fire season in the fall.