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Conditions at Cape St Francis in August
August: Late Winter Bigness with a Hint of Spring
August marks the tail end of winter but still runs big: 10ft (3.1m) average at 12.2 seconds, with ideal wind at 26 percent. SW at 12.8 percent and SSW at 8.0 percent remain the primary swell sources, while E holds at only 0.8 percent. The wind field is a bit more balanced than July: WSW 16.8 percent, W 23.0 percent, ENE 10.1 percent, and NNW 5.9 percent. This can create clean westerly windows, especially after fronts pass, and the slightly higher S/SSW/SW wind totals help. Water is at its coolest for the year, 16.5°C, while air warms slightly to 15.0°C. August is still low season, but the last fortnight can produce quality long-period swell when the high pressure rebuilds and the wind swings offshore.
Average Spot conditions at Cape St Francis in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Cape St Francis during August. 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 August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cape St Francis for August. 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.