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Conditions at Boca Barranca in December
December: Dry Season, Diminutive Surf
December closes the year with the return of dry-season stability. Average swell height falls to 0.2m (0.7ft), the lowest of the year, while the period sits at 12.1s. Swell direction remains dominated by SSW (69.1%) and S (10.0%), with the favourable W/WNW/NW/WSW windows at just 1.3%. The only 0.5-1m signal is a tiny 0.3% from NE-again, more of a tease than a wave.
Winds shift decisively back to the NNE/NE trades: NNE (19.4%) and NE (18.7%) combine for nearly 40%, while favourable offshore ENE/E/ESE/SE directions total 17.1%. Ideal surf wind is 0%. With only 0.91 mm/day of rain, 26.3°C air, and 28.1°C water, December offers the best odds of warm, dry, windswept flatness at Boca Barranca. It's a longboard-and-sightseeing month, but the seasonal outlook for the next few months is the least bad you'll find all year.
Average Spot conditions at Boca Barranca in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Boca Barranca 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 Boca Barranca for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Boca Barranca 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 Boca Barranca.