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Conditions at Witches Rock in December
December: The Trade Wind Transition
December marks a return to the winter trade-wind regime and the low season for quality at Witches Rock. The swell spectrum is dominated by ENE (40.1%) and NE (22.9%), with only about 9% arriving from the preferred SSW-W window. The average period drops to 8.9s, producing shorter-period, average, punchy waves that are often a bit closed out. The wind story is extreme: NE blows 74.3% of the time and ENE another 18.0%, often in the 20-40kph range. While this is offshore, the strength can make conditions difficult, which is reflected in just a 34% ideal-wind score. The dry season is underway with only 0.37mm/day of rain, air temperatures around 25.7°C and water at 27.0°C. December is best left for when a rare longer-period SW swell lines up and the trades back off overnight.
Average Spot conditions at Witches Rock in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Witches Rock 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 Witches Rock for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Witches Rock 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 Witches Rock.