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Conditions at Jacksonville Beach in December
December: Cold Front Consistency
December closes the year with the highest ideal-wind percentage of any month at 19%, along with the established winter swell baseline of 0.6m (2ft) and a 7.1s period. The swell direction remains broad: E (18.4%), ENE (16.1%), NE (15.8%), and ESE (14.0%), with NNE (9.4%) and NNW (7.1%) reflecting the passing of Nor'easters to the north. Most surf is in the 0.5-1m (1.5-3ft) range, but NE keeps a 2% slice of 1-1.5m (3-5ft) waves in the mix. Winds rotate from NW/NNW behind cold fronts to SW/WSW ahead of the next system, creating decent chances to find groomed, peaky beachbreak. Water temperatures settle at 19.5°C (67°F), air temperatures average 16.4°C (62°F), and precipitation is a modest 2.38mm/day. For surfers who do not mind a hood and booties, December is a solid, consistent bet.
Average Spot conditions at Jacksonville Beach in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Jacksonville 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 Jacksonville Beach for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Jacksonville 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 Jacksonville Beach.