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Conditions at Upper Trestles in August
August: Among the Smallest Months, Still Plenty of Period
August is often one of the smallest months at Upper Trestles, averaging 3ft (0.9m), but the long-period signature is intact at 13.6s. Swell direction remains ideal: SW 45.9%, WSW 30.4%, SSW 16.5%, and only 6.8% W. Most days feature 2-3ft (0.5-1m) peaks with frequent 3-5ft (1-1.5m) pulses from Southern Ocean and tropical Pacific events. The wind situation improves marginally from July, with ideal offshore flow at 13%, but the sea-breeze regime still owns the afternoons: WSW 27.0% and W 20.6% are the top two directions. Water temperature reaches its warmest of the year at 18.0°C, air averages 23.2°C, and dry weather rules. It can be a groveler's month at times, but a 14-second south swell and a morning north eddy can still make Lowers world-class.
Average Spot conditions at Upper Trestles in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Upper Trestles 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 Upper Trestles for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Upper Trestles 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 Upper Trestles.