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Conditions at Sunset Beach in September
September: The First Whiff of Winter
September is where the outlook begins to shift. Average height stays modest at about 5.5ft (1.7m), but the period lengthens to 9.2 seconds, adding more rideable push. Trade-wind swell still leads - ENE at 46.2%, NE at 18.1%, E at 13.9% - while N (4.2%) and NNW (5.5%) signals return, hinting at the seasonal transition. The wind improves too: ENE drops to 44.0%, E to 41.5%, and ideal offshore wind windows jump to 23%, the best since April. Water temperature reaches its annual peak of 26.7°C, air averages 26.2°C, and rain is light at 1.34 mm/day. Early North Pacific groundswells can make for surprisingly good Sunset sessions before winter's giants arrive.
Average Spot conditions at Sunset Beach in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sunset Beach 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 Sunset Beach for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sunset Beach 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 Sunset Beach.