Conditions at Malhao in December
December: Winter Peak with Maximum Power
December statistically delivers the best overall conditions of the year at Malhao. Average swell height is 2.3m (7.5ft), average period is 12.7s, and ideal wind reaches its annual maximum of 47%. The north Atlantic storm track is in full swing, sending organized, long-period energy from the NW (24.6%) and WNW (19.3%), with a solid 6.7% from due west. The offshore wind signal is strong: ENE (9.5%), E (8.8%), and ESE (6.2%) together create a much cleaner surface than any other month. That combination can make Malhao absolutely firing - heavy, glassy, powerful waves over the sandbars. Air temp averages 12.1°C, water temp is 15.8°C, and precipitation averages 2.55 mm/day. Winter has arrived, and it is time to charge.
Average Spot conditions at Malhao in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Malhao 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 Malhao for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Malhao 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 Malhao.