Weather in Costa Mesa, California
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 05:22 PM ET · Refreshes every hour
66°F
Partly cloudy
Feels like 66°F
69%
Humidity
9 mph
Wind Speed
About Weather in Costa Mesa
Costa Mesa is located in California (coordinates: 33.665905°N, 117.912336°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.