Newport Beach, CA Weather

Newport Beach has a mid-latitude semi-arid climate with characteristics of a warm-summer Mediterranean climate (Köppen: Csb). Like many coastal cities in Los Angeles and Orange counties, Newport Beach exhibits weak temperature variation, both diurnally and seasonally, compared to inland cities even a few miles from the ocean. The Pacific Ocean greatly moderates Newport Beach’s climate by warming winter temperatures and cooling summer temperatures. Diurnal temperature variation is stronger during the winter than during the summer. Newport Beach does not receive enough precipitation to qualify as a true Mediterranean climate.