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Conditions at Shipwreck Bay in August
August: Late-Winter Power
August mirrors July in many ways: average swell height again hits 7-8ft (2.3m), period sits at 12.4s, and ideal offshore wind is only 19 percent. The key difference is a stronger WSW contribution (14.4 percent vs SW at 30.1 percent), meaning the swell window rotates slightly more westerly. That can be a double-edged sword for a north-facing spot: more west in the swell usually means more size, but also more tendency to wrap or close out unless the offshore wind is exactly S/SSW/SW. Water temp is at the annual minimum of 14.4°C, rainfall is still high at 4.00mm/day, and winter coats are a must. Still, the longer periods and growing daylight make August a favorite for charging part-time-if you can find a rare N/NE window between storms.
Average Spot conditions at Shipwreck Bay in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Shipwreck Bay 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 Shipwreck Bay for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Shipwreck Bay 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 Shipwreck Bay.