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Conditions at Rockaway-Manzanita in September
September: Autumn Return and Renewed Energy
September marks the beginning of the autumn transition. Average swell rises to 5-6ft (1.5-1.7m) and period stretches back to 10.6s. The W-WNW-NW complex remains dominant, with WNW at 38%, W at 22% and NW at 20% providing a steady mix. Heights are spread across 3-5ft (1-1.5m) and 5-8ft (1.5-2.5m), so solid, powerful waves become more frequent as the month wears on.
Wind quality improves noticeably, jumping to 28% ideal. The persistent summer NNW regime starts to break down, and S and SSW winds begin to appear in pre-frontal flow. Air temps are still pleasant at 14.0°C, water temperature is 12.8°C, and rain starts to pick back up to 2.03mm/day. September is a fantastic month for catching early autumn groundswell with a mostly summer mentality.
Average Spot conditions at Rockaway-Manzanita in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Rockaway-Manzanita 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 Rockaway-Manzanita for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rockaway-Manzanita 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 Rockaway-Manzanita.