Conditions at Banana Beach in December
December: The Winter Crown and Peak Offshore Reliability
December is statistically the most consistent month for overall conditions. The average swell is 2.1m (7ft) with a 12.9s period, and the directional spread is the broadest of the year - NNW (31.7%), NW (27.9%), WNW (12.0%), and W (1.9%) all contribute. That extra western energy makes the west-southwest exposure of Banana Beach very happy, and long-period WNW/W pulses wrap well into the bay.
The wind story is even better: favorable conditions 62% of the time, the highest of the year. E (13.7%) and ESE (10.4%) bring clean continental flow, while the offshore sector from NNE through E totals around 36%. NNW (16.8%) and NW (7.5%) still provide texture, but the bad W-SW onshore quadrant is nicely suppressed. Water temp drops to 17.6°C, air temp averages 15.0°C, and rain is notable at 1.42mm/day. December is charging season - bring the step-up and enjoy the power.
Average Spot conditions at Banana Beach in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Banana Beach 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 Banana Beach for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Banana Beach 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 Banana Beach.