Conditions at T-Street in December
December: Prime Time at T-Street
December is the peak of the T-Street year. Average swell is 2.6ft (0.8m), but the period is a solid 12.3s and the swell mix is classic winter - W at 42.6%, WSW at 33.4%, SW at 16.0%, with WNW and SSW adding variety. More importantly, ideal wind reaches its highest mark of the year at 54%, driven by NE at 24.7%, NNE at 10.5%, ENE at 5.4%, N at 2.5% and E at 3.7% - all offshore directions that groom the southwest-facing break into smooth, walled-up lines. Rain is moderate at 1.70mm/day, air temps average 13.1°C, and water temp drops to 14.6°C, so a good winter wetsuit is essential. The combination of consistent long-period swell and frequent offshore mornings makes December the month to circle on the calendar.
Average Spot conditions at T-Street in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at T-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 T-Street for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at T-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 T-Street.