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Conditions at Newport Beach in December
December: Winter Storms and Peak Offshore Wind
December is statistically the cleanest month of the year at Newport Beach. Average swell height is 0.8m (2-3ft) with a 12.3s period, and ideal offshore wind reaches its annual maximum of 43%. The swell rose is dominated by W at 42.6% and WSW at 33.4%, with SW at 16.0% adding some more direct southwest energy. Although pure west swell is not the best angle, the strong WSW component keeps the surf well-shaped and powerful on the better sandbars.
Frequent North Pacific cold fronts bring rain, averaging 1.86 mm/day, and regular fresh groundswell through the month. Air temperature drops to 14.8C and water temperature matches at 14.8C. The winter pressure pattern delivers the offshore N to ENE winds that groom Newport's lines, meaning December consistently offers the best combination of size, period and clean surface conditions all year.
Average Spot conditions at Newport Beach in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Newport Beach during December. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Newport Beach for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Newport Beach for December. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Newport Beach.