Conditions at Marinaretti in December
December: Peak Season - Consistent, Punchy and Offshore
December is the best month of the year at Marinaretti. The average swell height peaks at around 3ft (1.0m), the average period reaches 5.8s, and the 'ideal wind' score tops out at 31% - the strongest offshore-wind signal of the year. Swell from S/SSW/SW above 3ft (1m) is present about 8% of the time, and the north/northeasterly Bora flow is most frequent, especially during cold outbreaks after low pressure systems move through.
Winter climatology is in full force: low pressure systems cross the Mediterranean, the NAO pattern determines how far south the storm track dips, and the cold pool over central Europe helps tighten pressure gradients along the Italian coast. Air temperature averages 12.0°C, water temp is 16.1°C, and precipitation is substantial at 3.33mm/day. The surf remains short-period by ocean standards, but it is consistent, often offshore and perfectly lined up for the south-facing beach. For reliable 3ft (1m) surf on this stretch of coast, December is the time to be at Marinaretti.
Average Spot conditions at Marinaretti in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Marinaretti 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 Marinaretti for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Marinaretti 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 Marinaretti.