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Conditions at Backyards in September
September: The Atlantic Wakes Up Slowly
September is the first sign of light at the end of the summer tunnel. The average swell is still modest at 5.6ft (1.7m), but the period stretches back to 9.2s, giving the waves a touch more push. The direction mix is more balanced: ENE drops to 46.2%, NE 18.1%, NNE 9.1%, and the favorable NNW sector returns to 5.5%, with N adding 4.2%. The trades are still strong - ENE 44.0% and E 41.5% - but offshore S/SSW/SW/WSW flow starts to appear, and ideal surfing wind improves to 23%. This is the month when early season North Atlantic lows, or hurricanes interacting with the mid-latitude jet, can throw the first long-period pulses toward Puerto Rico. It is a transition month: still inconsistent, but with more hope than June through August. Water temperature is at its warmest, 26.7°C, air temperature 26.2°C, and rain averages 1.34mm/day.
Average Spot conditions at Backyards in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Backyards 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 Backyards for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Backyards 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 Backyards.