Conditions at Isla de Santa Marina in December
December: Peak Winter, Serious Groundswell
December closes out the year in peak form. Average swell height is a robust 2.0m (6-7ft) and period 12.5 seconds, delivering the long-period, heavy groundswell that makes this stretch of coast so special. The swell direction is the most varied of the winter, with WNW contributing its largest share of the year at 20 percent, NW at 36 percent and NNW at 12 percent. That broad spread across the optimal window guarantees consistent exposure and plenty of 5-8ft (1.5-2.4m) surf.
Ideal wind remains at 44 percent. The wind rose has a prominent S/SSW component - 14 and 12 percent, respectively - which is excellent for keeping the beach clean, while W and WNW winds on the back side of storms can still toss up some chop. Water temperature is 14.3°C and air averages 10.4°C, with rain at 3.7mm/day. For wave-hungry surfers, December is one of the most reliable months on the calendar.
Average Spot conditions at Isla de Santa Marina in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Isla de Santa Marina 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 Isla de Santa Marina for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Isla de Santa Marina 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 Isla de Santa Marina.