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Conditions at Playa Negra in September
September: Perfect Swell Window, Fickle Wind
September is the wettest month of the year and the most challenging for wind quality at Playa Negra. The swell direction is nearly perfect: SSW at 66.7% and SW at 28.8%, giving 97.8% of the energy from the preferred directions. Average height is 5ft (1.5m) with a solid 13.1s period, so there is never a shortage of raw wave power. The problem is the wind. Offshore directions fall to just 25.9% of observations, and the ideal surfing wind score drops to 48%, the lowest of the year. Onshore flow from SSW, SW, WSW and W totals 26.3%, which can put a persistent bump on the face. Heavy rain (8.75mm/day), muggy air at 26.7°C, and warm water at 28.9°C add to the challenge. When a morning offshore window does align, the SW ground swell can still fire, but consistency takes a hit.
Average Spot conditions at Playa Negra in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Playa Negra 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 Negra for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa Negra 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 Negra.