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Conditions at Cape St Francis in December
December: Midsummer Setup with Directional Promise
December is the start of the true summer surf season for Cape St Francis. Swell averages 8ft (2.5m) at 10.9 seconds, ideal wind is 30 percent, and E-angled swell sits at 2.6 percent, one of the highest readings of the year. The dominant swell still comes from SW at 20.2 percent and SSW at 17.5 percent, but the increasing E presence means more waves with actual direction for this NE-facing spot. Wind patterns show the classic summer split: E at 17.6 percent, ENE 10.5 percent, and ESE 9.2 percent versus WSW 18.5 percent, W 13.7 percent, and SW 7.4 percent. The water is warm at 19.3°C, air at 20.3°C, and rain is modest at 1.46 mm/day. December delivers that sought-after combination of warm water, long-period groundswell, and a better share of east in the swell - kick-off time for the prime surf window.
Average Spot conditions at Cape St Francis in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Cape St Francis 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 Cape St Francis for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cape St Francis 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 Cape St Francis.