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Conditions at Playa Blanca in September
September: The Swell Ratchets Up, But the Wind Window Fades
September is the most swell-dominant month of the spring transition. Average height holds at 5-6ft (1.7m), the period is 12.8s, and SW swell accounts for a huge 78% of all wave energy, with WSW adding another 15%. The most frequent wave size is 5-6.5ft (1.5-2m), and nearly 22% of waves reach 6.5-8ft (2-2.5m). On paper, this is a great groundswell month.
But wind quality drops to just 4% ideal. SSW wind dominates at 38%, while SW and WSW combine for another 31%, and S flow adds 10%. The result is that many of these powerful, long-period waves arrive in stormy, lumpy condition. Still, when a cold front passes and the wind clocks around to the east, Playa Blanca can be genuinely world-class. Air temp is 14.9°C, water temp holds at 12.5°C, and rainfall is low.
Average Spot conditions at Playa Blanca in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Playa Blanca during September. 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 Playa Blanca for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa Blanca for September. 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 Playa Blanca.