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Conditions at Wickaninnish in December
December: Peak Season Intensity with Offshore Outflow
December equals January in terms of raw winter power. Average swell height is 1.9m (6ft) and the average period is 12.2s, making it one of the two biggest months of the year. The optimal SSW-W window accounts for about 74% of the swell-WSW (26.7%) and W (26.0%) lead the way, with SW (13.5%) and SSW (7.7%) providing consistent southwest energy. Wave heights are concentrated in the 1 to 2.5m range, and when the storm track aligns, the sets can easily push beyond the XL threshold.
December also has one of the best offshore wind scores of the year at 38% ideal flow. The dominant wind directions are E (17.5%) and ESE (14.2%), with a solid ENE and NE contribution, so there are good runs of clean east-northeast outflow. Air temperature averages 5.1°C, water temperature is 9.0°C, and precipitation is 9.93mm per day. Cold, wet, and often brilliant-this is prime Wickaninnish.
Average Spot conditions at Wickaninnish in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Wickaninnish 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 Wickaninnish for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Wickaninnish 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 Wickaninnish.