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Conditions at Kalk Bay in December
December: High Summer, Low Expectations
December rounds out the year with 2.3m (7.5ft) of average swell and an 11.3s period. Swell from SW at 27.0% and SSW at 15.6% still dominates, along with S at 9.9% and SSE at 5.7%, so the ocean never goes empty. But the wind is the boss: SE at 26.7%, SSE at 22.2%, and S at 10.5% are all onshore or cross-onshore, and ideal conditions only occur 13% of the time. Air temps sit at a pleasant 19.9°C and water temp climbs to 17.6°C, making it warm in the sun but frustrating in the water. Pick your windows - dawn, tide changes, or a brief NW pulse between high-pressure ridges - and you can still find fun, powerful waves at Kalk Bay.
Average Spot conditions at Kalk Bay in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Kalk Bay 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 Kalk Bay for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kalk Bay 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 Kalk Bay.