Conditions at Belmar in December
December: Midwinter Momentum
December rounds out the year with a solid 4ft (1.2m) average swell and a 7.1s average period. The swell spectrum is less favorable than October - S/SSW dominate and the prime ENE/E/ESE/SE quadrant slips to 26% - but the sheer frequency of winter storms keeps the ocean active. The signature of this month is wind: WNW (15%) and W (13%) are the two dominant wind directions, and with ideal offshore conditions 39% of the time, Belmar can string together clean, punchy sessions between cold fronts. Water temp drops to 9.2°C, air temp averages 5.9°C, and precipitation reaches its annual peak at 4.0 mm/day, meaning the beach is raw, cold, and alive for those willing to suit up in thick rubber.
Average Spot conditions at Belmar in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Belmar 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 Belmar for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Belmar 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 Belmar.