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Conditions at Avalanche in December
December: Summer Settles In
December is the pride of the summer season at Avalanche. Ideal wind reaches 28 percent again, water temperature warms to 19.6°C and air temps average 20.8°C. Average swell height is 6-7ft (2.0m) with a 10.7s period-smaller and friendlier than the winter giants, but still packing enough punch to make the beach fun. SSW swell is back on top at 29.1%, with SW at 18.1% and S at 14.6%. Wind is a battle between cross-onshore E at 16.6% and offshore WSW at 15.6% plus SW at 12.6%. The ideal summer set-up is a SSW groundswell pulsing around 6-7ft (2.0m), an early E breeze that fades as the land heats up, and by afternoon a clean offshore WSW wind. That combination makes for some of the most consistent, user-friendly waves of the year.
Average Spot conditions at Avalanche in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Avalanche 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 Avalanche for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Avalanche 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 Avalanche.