Heat Advisory in Effect for San Diego County Coastal Areas Until 8 PM Friday
The National Weather Service San Diego has issued a Heat Advisory for coastal areas of San Diego County, warning of heat illnesses from high temperatures through Friday evening.
3 reports on this incident · first at Sep 11, 2026, 5:56 a.m. ET
Earlier reports
Sep 11, 2026, 6:24 a.m. ET
Weather Service Warns Heat Advisory Conditions May Cause Heat Illnesses in San Diego County Coastal Areas
The National Weather Service San Diego CA says hot temperatures may cause heat illnesses in the San Diego County Coastal Areas, according to the office's heat advisory. The advisory is in effect until 8 PM PDT on Friday, September 11, 2026.
The Weather Service expects high temperatures in the mid 80s to lower 90s near higher coastal terrain. The advisory covers San Diego, National City, Oceanside, Vista, Chula Vista, Carlsbad and Encinitas, and covers 4 zones.
The Weather Service advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking up on relatives and neighbors. It says to take extra precautions when outside, wear lightweight and loose fitting clothing, and try to limit strenuous activities to early morning or evening. The office says to take action when you see symptoms of heat exhaustion and heat stroke.
The advisory was issued at 2:30 AM PDT on Friday, September 11, 2026, and expires at 8 PM PDT the same day.
Sep 11, 2026, 5:56 a.m. ETFirst report
Heat Advisory Issued for San Diego County Coastal Areas Until 8 PM Friday
The National Weather Service San Diego CA has issued a Heat Advisory for San Diego County Coastal Areas, according to the agency's advisory record. The advisory is in effect from 2:30 AM to 8 PM PDT on Friday, September 11, 2026.
High temperatures in the mid 80s to lower 90s near higher coastal terrain are expected, the advisory states. The affected areas include San Diego, National City, Oceanside, Vista, Chula Vista, Carlsbad, and Encinitas, covering four zones.
The advisory warns that hot temperatures may cause heat illnesses. The National Weather Service recommends drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking up on relatives and neighbors. It also advises taking extra precautions when outside, wearing lightweight and loose fitting clothing, limiting strenuous activities to early morning or evening, and taking action when symptoms of heat exhaustion and heat stroke appear.
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Revision history
- Version 111 Sept 2026, 10:24current
First published.
- Version 111 Sept 2026, 09:56current
First published.
- Version 111 Sept 2026, 10:54current
First published.
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