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Conditions at The Dunes in July
July: Cold-Weather Heavyweights
July is statistically the biggest month of the year at The Dunes, with an average swell height of 2.9m (9.5ft) and the longest average period of the year at 12.6s. The direction mix remains excellent: SW at 18.4 percent, WSW at 9.8 percent, SSW at 8.5 percent, and W at 2.6 percent, with WNW at 0.8 percent. This is full winter groundswell - not just big, but powerful, long-period and capable of producing heavy, organized peels.
Wind reliability is still strong, with ideal offshore conditions 23 percent of the time. SE winds are at 14.5 percent and SSE at 12.6 percent, but NNW winds also run at 20.4 percent and NW at 9.0 percent, so it can quickly turn onshore during frontal passages. The key is to target the post-frontal SE blasts. Water temp is a cold 15.1C, air temps sit near 14.3C, and precipitation is high at 2.43 mm/day. July is a season for charging, not for summer souls.
Average Spot conditions at The Dunes in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at The Dunes during July. 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 The Dunes for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at The Dunes for July. 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 The Dunes.