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Conditions at La Setenta in September
September: First Storm-Belt Surges
September is the pivot month between summer flatness and the autumn season. Average wave height nudges up to 1.3ft (0.4m), period to 4.8s, and the wind is ideal 7% of the time. ENE swell is still the dominant source at 31%, closely followed by NE at 24%, but the NW and NNW quadrants begin to show a little more life, with occasional 3-6ft (1-2m) pulses from the good direction. Those pulses are often tied to tropical storms or early-season extratropical systems pushing out of the Gulf. The trade winds remain strong, especially from E and ENE, so onshore chop is common. Still, the dynamic is shifting: each passing cold front or tropical wave has the potential to unlock a proper session after months of smallness. Water temperature is 29.7°C, air temperatures average 28.1°C, and rainfall is at its annual peak at 3.89 mm/day.
Average Spot conditions at La Setenta in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at La Setenta 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 La Setenta for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at La Setenta 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 La Setenta.