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Conditions at Ponce Inlet in September
September: Tropical Fever and Onshore Woes
September is a statistical paradox. The average swell height jumps to 1.2m (4ft) and the average period stretches to 8.9s - the most powerful of the year. The swell direction distribution tilts overwhelmingly to the E/ENE window: E supplies 32.6%, ENE 29.7%, and NE 12.6%, meaning nearly 77% of all waves come from the preferred directions. This is the most favourable swell window of the year, driven by tropical cyclones and open-ocean lows.
Yet the wind gods are cruel. Ideal offshore flow occurs only 29% of the time, with ENE wind at 14.9% and NE at 10.9% - both directly onshore at Ponce Inlet. This creates a frustrating mix of real size and power with messy, wind-chopped surfaces. Water temps are still tropical at 28.4°C (83.1°F), and rain is high at 5.61mm/day. When a cold front or a trough can drag the wind to the SW, September can offer some of the best waves of the year, but those windows are short and prized.
Average Spot conditions at Ponce Inlet in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Ponce Inlet 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 Ponce Inlet for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Ponce Inlet 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 Ponce Inlet.