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Conditions at Sandy Hook in December
December: Winter is Fully Engaged
December delivers some of the most consistent heavy conditions of the year. Average swell sits at 4-5ft (1.2-1.5m) with a 7.1-second period, generated by frequent Nor'easter development and strong cold fronts rolling off the continent. The E and ENE swell windows remain important, and the broader optimal direction set provides nearly 20% of the wave energy. Wind is dominated by W, WNW and NW flow, which together account for over 40% of the rose and blow offshore across the east-northeast-facing beach. This makes for a lot of lumpy, powerful, semi-contaminated winter surf, but with excellent windows of clean west wind between fronts. Air temperatures average only 4.3°C and water temperatures fall to 8.8°C, so heavy winter rubber is essential. For hardcore local surfers, December is a challenging but rewarding playground.
Average Spot conditions at Sandy Hook in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Sandy Hook 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 Sandy Hook for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sandy Hook 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 Sandy Hook.