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Conditions at North Street in December
December: Winter Weight, Cold Power
December ties with January and March for the largest average swell of the year at 4-5ft (1.2-1.5m), though the period drops back to 7.1 seconds. S and SSW swells are common again, while the E-SSE window shrinks to about 26%, so North Street relies on angled S and ENE energy mixed with occasional ESE pulses. The saving grace is wind: WNW, NW and NNW dominate, with W also strong, creating frequent clean offshore conditions. Water temp plunges to 8.7°C and air averages 4.7°C, so the winter suit goes on. This is a fair but powerful month.
Average Spot conditions at North Street in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at North Street 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 North Street for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at North Street 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 North Street.