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Conditions at Port Mary in December
December: Peak Season Power
December is the heaviest month of the year at Port Mary. The average swell reaches 9.8ft (3.0m) with a long 11.7s period, and the North Atlantic storm track is firing on all cylinders. Swell from SSW, SW and WSW dominates the window, and there are frequent readings in the 6.5-8ft (2-2.5m) and 8ft-plus (2.5m-plus) categories, making for proper XL days. Ideal offshore wind is 33 percent, with ENE/NE flow most likely to give clean, hollow conditions. Air temperatures are frigid at 3.0°C, precipitation is high at 9.14mm/day, and water temperature sits at 6.6°C. If you are looking for maximum power, peak consistency, and that true North Atlantic winter look, this is the month to be at Port Mary.
Average Spot conditions at Port Mary in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Port Mary 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 Port Mary for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Port Mary 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 Port Mary.