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Conditions at Kommetjie in December
December: Summer Peak, Cleanest in the Morning
December rounds out the year with the strongest subtropical influence. The average swell remains at 7.5ft (2.3m) and period at 11.3 seconds, and the wave rose is still packed with SW (27%) and SSW (16%) energy. The wind is the defining feature: SE (24%) and SSE (23%) combined push toward half the month, with many readings in the 20-40 and 40-50kph range. Ideal conditions stay at 9%, so surfable windows are precious. The good news is that the water is back up to a warm 17.8°C, air temperatures hover at 19.1°C, and precipitation is only 0.42 mm/day, making for pleasant dawn patrols. Look for the early-morning lull, an incoming SW groundswell, and light S/SE winds; that is when Kommetjie delivers its festive-season best.
Average Spot conditions at Kommetjie in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Kommetjie 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 Kommetjie for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kommetjie 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 Kommetjie.