Conditions at Foz do Arelho in December
December: Prime Time on the Silver Coast
December is arguably the best month of the year at Foz do Arelho. Average swell height is a powerful 9ft (2.7m), period is 12.8s, and the swell is delivered almost exclusively from the NW, WNW and NNW directions. What pushes December over the top is wind: with 32 percent ideal offshore conditions, it is the best-placed month for clean, lined-up sandbar sessions. Post-frontal high pressure often settles over Iberia, bringing clear skies, cold air averaging 13.0C and light E to SE winds that make the waves stand up hollow and fast. Water temperature is 14.8C and rainfall is 2.93 mm/day. The Atlantic can throw XL and XXL days at the coast, so the key is picking the windows. If you want big, grinding winter waves on a beautiful northwest-facing Portuguese beach, this is the month.
Average Spot conditions at Foz do Arelho in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Foz do Arelho 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 Foz do Arelho for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Foz do Arelho 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 Foz do Arelho.