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Conditions at South Wall Ballina in December
December: Summer Energy, Chaotic Sea Breeze
December is all about east-northeast trade energy. E (17.5%), ESE (17.2%), ENE (14.3%) and SE (15.6%) swells dominate the wave rose, with SSE (12.8%) providing the only real hint of winter. The average period is 8.3s, so surf tends to be crumbly and wind-affected unless a tropical cyclone or east coast low generates a proper long-period pulse. Water temps reach 23.5°C and rainfall is 4.21 mm/day, with warm, sticky conditions prevailing.
Ideal wind frequency is 38%, but NNE (13.8%), NE (9.4%), SSE (10.8%) and SE (8.7%) winds keep many days bumpy. Still, December is not a write-off: after a trough passes, a brief W/NW change can deliver offshore westerly conditions for a few hours, and tropical systems can aim serious E/ESE swell up the coast. You just have to be ready to hunt.
Average Spot conditions at South Wall Ballina in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at South Wall Ballina 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 South Wall Ballina for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at South Wall Ballina 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 South Wall Ballina.