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Conditions at Cardiff Reef in July
July: Peak Summer South Swell, But Almost No Offshore Wind
July at Cardiff Reef is the classic summer southern California setup: a mix of long-period SW and SSW groundswell arrives from the South Pacific, with SW (47.3%), WSW (29.8%) and SSW (17.6%) accounting for nearly all observations. The average period is a healthy 13.7s, so the wave shape is lined up and inviting when the surface is clean. However, the average height drops to around 3ft (1m), and the bulk of the swell sits in the 2-3ft (0.6-0.9m) range, with some 3-5ft (1-1.5m) peaks. It is longboard and funboard territory, not a wave of consequence.
Wind statistics are grim for quality. Ideal wind is just 1 percent. The W (40.0%) and WSW (29.3%) sectors dominate the wind rose, with SW (12.7%) also present. These are exactly the onshore directions that degrade the wave surface at a west-southwest-facing beach. Summer here is about dawn patrol, small warm waves and water temperatures up to 18.8°C.
Average Spot conditions at Cardiff Reef in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Cardiff Reef 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 Cardiff Reef for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cardiff Reef 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 Cardiff Reef.