Historical weather data, all-time temperature records, and monthly climate averages for Newport Beach, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Newport Beach is a mild shoulder-season day, with temperatures historically averaging a high of 65° and a low of 52°. That said, the date has seen some wild swings — a scorching 99° in 1989 and a chilly 40° low back in 1954. Rain is unlikely but not unheard of, with just a 19% historical chance of any precipitation.
Newport Beach has a remarkably temperate climate, but its all-time records reveal it's not immune to extremes. The mercury has climbed as high as 107° (September 26, 1963) and dipped to a freezing 29° (January 22, 1937). The wettest single day on record dropped a remarkable 6 inches of rain on December 6, 1997.
Newport Beach barely breaks a sweat year-round — monthly average highs range only from 63° in January to a peak of 74° in early August. If you're chasing warmth, aim for late July through September; if you want to avoid rain, skip February, which is the wettest stretch of the year. Honestly, though, with 11° separating the coolest and warmest weeks, almost any time is a good time to visit.