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Extreme Heat Watch Issued for San Diego and Orange County Coastal Areas

August 23, 2026 · wweather1 editorial · 1 min read

The National Weather Service in San Diego has issued an Extreme Heat Watch for coastal areas of Orange County and San Diego County, effective from Tuesday morning through Friday evening. Temperatures are expected to reach up to 95 degrees.

The National Weather Service in San Diego, California, issued the Extreme Heat Watch on August 23 at 1:54 PM PDT. The watch is scheduled to take effect on August 25 at 10:00 AM PDT and will remain active until August 28 at 8:00 PM PDT.

Dangerously hot conditions are forecast for coastal Orange County and coastal San Diego County, with high temperatures possibly reaching 95 degrees. Officials note that extreme heat events significantly increase the risk of heat-related illnesses.

Overnight relief will be limited as low temperatures are projected to stay around 5 to 7 degrees above normal. This is expected to affect individuals without access to adequate cooling facilities.

Why it is dangerous and what to do

⚠️ Safety
• Drink plenty of fluids and stay out of direct sunlight.
• Remain in air-conditioned rooms when possible.
• Check on relatives and neighbors to ensure their safety.
📊 The numbers, from wweather1 data
San Diego: now +23°, Overcast.
That is 4° above the August climate norm.
The record for this date is +34° (1945).
Three-day forecast: 24 August: +29°/+21° · 25 August: +30°/+20° · 26 August: +27°/+20°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

🌍 Weather in nearby cities

📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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