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Conditions at Shipwreck Beach in December
December: Winter Peak in Full Swing
December delivers the biggest average swell of the year, with heights around 8ft (2.4m) and an average period of 11.9s. NNW swell is the single largest directional source at 15.7 percent, backed by NE, NNE, ENE and NW pulses, creating consistent wrapping groundswell for the south-facing beach. The wind pattern is more mixed than summer, with ENE at 38.3 percent and a stronger spread of north and west winds; ideal offshore flow holds at 22 percent. This combination means December can offer some of the cleanest, heaviest waves of the year, especially when a 15s-plus North Pacific groundswell lines up with a N/NNW offshore breeze. Water temps are 24.8°C, air averages 23.7°C, and rainfall is around 2.5 mm/day.
Average Spot conditions at Shipwreck Beach in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Shipwreck 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 Shipwreck Beach for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Shipwreck 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 Shipwreck Beach.