What is the weather like in Newport Beach?
A – Year-round Mediterranean climate with sunny days and cool evenings. Average summer temperature (April-September) is 75 degrees F (24 degrees C). Average winter temperature 65 degrees F (18 degrees C). Average annual rainfall is 12 inches. Casual sports clothing year-around during the day is suitable and dressier apparel is appropriate at some nightspots and restaurants. A sweater or jacket is recommended for cool mornings and evenings and for harbor cruises and trips to Catalina Island.