Tomorrow | Weather | Costa Mesa, California

Active Weather Warnings
Tuesday, July 21, 2026
Cloudy Weather
Day 81°
Night 70°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (July 21, 2025)
Cloudy Night

Day

75°

Night

66°

Wind

6 mph

Precipitation

25 %

Weather Alerts and Warnings for

Minor Expected Likely

High Surf Advisory

High Surf Advisory issued July 20 at 2:06PM PDT until July 21 at 11:00PM PDT by NWS San Diego CA
Jul 20, 2:06 PM Jul 21, 11:00 PM
WHAT: Large breaking waves of 4 to 7 feet with sets up to 8
feet at south or southwest facing beaches.

WHERE: San Diego County Coastal Areas and Orange County
Coastal Areas.

WHEN: Until 11 PM PDT Tuesday.

IMPACTS: Dangerous swimming and surfing conditions and
localized beach erosion.

ADDITIONAL DETAILS: South swell of 4 to 5 feet with a period
of 11-13 seconds generating high surf, primarily for south-
facing beaches. High risk of rip currents exists with high
surf and strong longshore currents are expected on west-facing
beaches. High tides will generally be at or below 5.5 feet,
but localized areas of beach erosion and minor tidal overflow
may occur with the high surf during high tides. Swell and surf
will decrease late Tuesday into Wednesday.
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Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
Updated: Jul 20, 5:37 PM Source: NWS Alert