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Conditions at Cox Bay in December
December: Midwinter Heavyweights
December closes the year with some of the biggest, longest-period surf of the season. Average swell height is back up to 8-9ft (2.6m), with an average period of 12.4s - firmly in the powerful, long-period class. Swell direction remains true to the spot's exposure: W (19.3%), WSW (16.2%), SW (7.0%) and WNW (3.7%) all feed into the west-facing arena. Wind data show a strong offshore component from E (17.5%), ESE (14.2%) and ENE (8.4%), and the ideal-wind percentage is a healthy 38%. WNW (9.8%) is still present, but the east-based flow is more frequent, setting up clean, heaving conditions when the swell peaks. Water temperature is cold at 8.1°C (47°F), air temps average 5.1°C (41°F), and precipitation is around 10mm/day. For hardcore surfers, December is Cox Bay at its rawest: heavy, long-period, and wonderfully challenging.
Average Spot conditions at Cox Bay in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Cox Bay 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 Cox Bay for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cox Bay 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 Cox Bay.