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Conditions at Jelly's Point in December
December: Winter Power Arrives
December delivers the first real block of winter surf. Average swell height reaches 4ft (1.2m), average period speeds up to 9.9s, and the percentage of 3-5ft (0.9-1.5m) waves is among the highest of the year - roughly 58%. ENE (52%) and NE (40%) remain the primary swell directions, but there is enough NNE energy to give the wave faces some shoulders. The North and NNW directions are still only a small slice of the total, so it's not a classic north-groundswell month. Northeast monsoon winds are ramping up - N, NNE, NE and NNW together account for the majority of observations - and only 23% of conditions are ideal. Still, when the wind does slip offshore from S/SW, the combination of 4-6ft (1.2-1.8m) swell and 9.9s-period lines is exactly what this spot is all about. Water temperature is 28.3°C, with rainfall climbing to 14.3mm/day.
Average Spot conditions at Jelly's Point in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Jelly's Point 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 Jelly's Point for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Jelly's Point 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 Jelly's Point.