Conditions at Topanga in December
December: Peak Season Offshore Reliability
December is the crown jewel of the Topanga calendar. The wind is ideal a stellar 61% of the time-the best of any month-with the N, NNE and NNW sectors dominating the wind rose. West swell is king at 53.6%, with WSW adding another 29.5%, and the average 12.4s period ensures the North Pacific groundswell arrives with real energy. The average wave height sits at 2-3ft (0.8m), but 9.5% of the west swell reaches 3-5ft (1-1.5m) and another 2.5% hits 5-6ft (1.5-2m), giving plenty of fun-to-firing waves. Water temp drops to 14.4°C, air temps average 13.3°C, and 2.30mm/day of rain keeps the hills green. With light offshore winds, long-period west swell and clean south-facing sandbars, this is the month to circle on the calendar.
Average Spot conditions at Topanga in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Topanga 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 Topanga for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Topanga 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 Topanga.