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Conditions at Roca Loca in December
December: Dry Season Returns with Clean, Smaller Surf
December closes the year by settling into the dry season. Average swell height drops to 3-3.5ft (1.0m), and the period sits at 12.3 seconds. The direction is extremely consistent, with 95.0 percent of the swell from the SSW and most waves split between the 2-3ft (0.5-1m) range at 45.3 percent and the 3-5ft (1-1.5m) range at 49.3 percent. That means plenty of surfable, long-period waves, just at a smaller size. The wind is clean about 33 percent of the time as offshore NE-ESE flow becomes more regular. Rainfall falls sharply to 2.82mm/day, air temperature averages 25.6°C, and water temperature is 28.1°C. It is time to break out the longboard or mid-length; December may lack the raw power of the rainy season, but it delivers some of the cleanest, most inviting surf of the year.
Average Spot conditions at Roca Loca in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Roca Loca 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 Roca Loca for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Roca Loca 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 Roca Loca.