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Conditions at Oceanside Pier in July
July: South Swell Texture in a Summer Fog Bank
July is the heart of the south swell season at Oceanside Pier. The average swell is right around 3ft (1.0m) with a 13.7s period, and the direction mix is dominated by SW at 47%, WSW at 30%, and SSW at 18%. This southwest/south-southwest flow is the hallmark of Southern Hemisphere storm systems sending long-period groundswell into the California Bight. The pier's southwest orientation is an excellent filter for this energy, and when the swell fills in there will often be 4-5ft (1.2-1.5m) sets in the lineup.
Clean conditions, however, remain rare: ideal wind is a mere 4%. The prevailing summertime pressure pattern drives persistent W winds at 27% and WSW winds at 21% right into the beach. That creates bumpy, cross-onshore surf more often than not. When a light early-morning north or northeast breeze sets up, the south swell can be remarkably fun. Water temperature climbs to 18.4°C, air to 20.4°C, and rain is essentially zero at 0.12mm/day. July rewards the dedicated dawn-patrol surfer with a few glassy windows between fog and sea breeze.
Average Spot conditions at Oceanside Pier in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Oceanside Pier 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 Oceanside Pier for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Oceanside Pier 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 Oceanside Pier.