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Conditions at Sandy Beach in December
December: Peak Winter Power
December is the apex of the year at Sandy Beach. The average swell height reaches around 10ft (3.0m), the highest of any month, with an average period of 11.7 seconds - powerful, long-period waves. Swell energy comes heavily from the W/SW/WSW direction, with SW (8.9%), WSW (10.6%), and SSW (5.8%) leading the way; the N/NE component also adds some shadowed energy, but the main punch is from the favorable quadrant. Offshore winds blow 50 percent of the time, and the wind rose shows a strong ENE (13.2%) and E (12.2%) signal, ideal for keeping those big faces clean. Water temps bottom out near 6.9°C, and average air temps are 3.0°C - this is serious winter surf. For the experienced surfer, December is the month to charge.
Average Spot conditions at Sandy Beach in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Sandy 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 Sandy Beach for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sandy 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 Sandy Beach.