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Conditions at Boulevard in December
December: Big Winter Swell, Fierce Trades
December closes the year in full Amihan mode. Average swell height pushes back up to around 6ft (1.8m), period holds at 9.9s, and ENE (53%) plus NE (34%) swell delivers a steady diet of 5-8ft (1.5-2.5m) surf to the east-facing beach. This is the most powerful surface of the year, but it is also one of the most frustrating. NE winds dominate at 34%, ENE at 26%, and NNE at 14%, keeping the surface messy for most of December; ideal wind is only 7%. The occasional break in the trade wind pattern, often around a passing cold front or low-pressure system, can deliver a rare firing day. Overall, size hunters will find waves, but quality hunters should temper expectations. Air temp averages 27.4°C, rainfall is the heaviest of the year at 15.57mm/day, and water temperature is 28.0°C.
Average Spot conditions at Boulevard in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Boulevard 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 Boulevard for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Boulevard 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 Boulevard.