Conditions at Playa del Castillo in December
December: Holiday Season Juice
December rounds out the year with full winter conditions. Average swell height is 6.9ft (2.1m) and period stretches to 12.6s, placing most of the wave energy in the powerful long-period range. The wave rose shows a broader NW window: NNW 31.0%, NW 19.2%, WNW 8.1%-the largest WNW percentage of the year-so Playa del Castillo catches more optimally angled swell than in some mid-winter months. Ideal wind conditions are again 31%, making December one of the most consistent and surfable months of the entire year. The weather pattern is active and wetter, with 0.55mm/day of rain and air temperatures around 18.9°C, while the water slowly cools to 19.6°C. If you're chasing cold North Atlantic ground swell wrapping into this west-facing corner, December is a prime target.
Average Spot conditions at Playa del Castillo in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Playa del Castillo 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 Playa del Castillo for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa del Castillo 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 Playa del Castillo.