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Conditions at Penascal in July
July: Peak Winter Swell in the Cold Humboldt
July sees the annual swell peak hold steady at 1.9m (6.2ft) with a 12.8s period. Direct S swell becomes even more important, jumping to 17.6% of the total, while SSW still leads at 70.1% and SW adds 4.0%. The period remains long and powerful, but the average drops slightly from June, indicating a slightly more wind-driven or locally forced component mixed in. The wind regime is the real enemy: SSW (48.1%) and S (45.4%) dominate completely, with virtually every observation in the 10-20kph range. Ideal offshore wind is 0 percent. For a southwest-facing spot, this means constant side-onshore texture. Air temperature falls to the winter minimum of 16.9°C and sea surface temperature to 15.9°C. Expect big, raw, demanding surf rather than perfect lined-up waves.
Average Spot conditions at Penascal in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Penascal 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 Penascal for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Penascal 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 Penascal.