Newport Beach, California, experiences mild and generally sunny conditions during March. Average high temperatures typically range from the mid-60s to low 70s Fahrenheit (18-22 degrees Celsius), while average lows hover in the mid-50s Fahrenheit (around 13 degrees Celsius). Ocean temperatures remain cool, generally in the low to mid-60s Fahrenheit (16-18 degrees Celsius). Rainfall is less frequent than in the winter months, averaging around one inch throughout the month. Typical March weather creates comfortable conditions for various outdoor activities.
Pleasant springtime weather makes March a desirable time to visit Newport Beach. The reduced rainfall and comfortable temperatures offer ideal conditions for enjoying the area’s renowned beaches, harbor cruises, and outdoor dining. Historically, March marks the transition from the wetter winter season to the drier, warmer months of spring and summer along the Southern California coast. This period offers a balance between pleasant weather and fewer crowds compared to the peak summer season.