Conditions at Porto Covo in December
December: Clean Winter Gold
December closes the year with a full head of steam. Average swell height is 7-8ft (2.3m), period is 12.7s, and ideal offshore wind percentage reaches its annual maximum of 47%. This is the best statistical month for combining strong swell with clean conditions. Swell energy comes predominantly from NW (25%) and WNW (19%), with W (7%) and WSW (3%) adding more straight-west groundswell; heights cluster in the 1.5-2.5m range, producing consistent head-high-plus surf. Offshore winds from the east (ONO/O/OSO/SO) are the most frequent they have been all year - ENE and E combined make up over 18% of the wind distribution - which means Porto Covo often handles the Atlantic power beautifully. Water temperature is 15.8°C, air temperature averages 12.1°C, and rainfall is high at 2.55mm/day, but this is the winter payoff: big, clean, hollow waves.
Average Spot conditions at Porto Covo in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Porto Covo 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 Porto Covo for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Porto Covo 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 Porto Covo.