Conditions at Marinella in December
December: Maximum Consistency and Power
December is arguably the most reliable month of the year at Marinella. The average swell is 5-6ft (1.7m) with a long 12.6s period, and the swell window is dominated by WNW (39.6%) and NW (32.4%) with a bit more W and NNW energy mixed in. The height distribution is chunky: 10.4% of WNW observations are 1.5-2m, 7.8% are 2-2.5m, and the over-2.5m class appears often enough to keep things serious.
What really sets December apart is the wind. Ideal offshore conditions peak at 49%, the best mark of the entire year, as persistent E/ESE/SE/SSE offshore flow lines up with the WNW/NW swell. That combination produces some of the cleanest, most powerful waves Marinella sees all season. Air temperatures fall to 7.7°C and water sits at 13.9°C, so it is properly cold; hooded 4/3mm or even 5/4mm gear is a must. This is the month to circle on the calendar.
Average Spot conditions at Marinella in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Marinella 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 Marinella for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Marinella 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 Marinella.