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Conditions at Cox Bay in September
September: Autumn Reawakening
September is the month when the North Pacific starts to wake up again. The average swell height comes back up to 5ft (1.5m) with an 11.4s period, and W swell is dominant at 43.0%, with WSW at 28.4%, SW at 11.0% and WNW at 7.5%. The increase in west and west-southwest energy is a direct response to early autumn storms pushing farther south. Wind is still a mixed bag: WNW (24.9%), NW (11.4%) and W (10.4%) are common, but ESE (7.4%) and SE (9.1%) show the return of more variable patterns, lifting ideal-wind percentage to 29%. Water temperature remains warm at 13.6°C (56°F), air temps average 13.5°C (56°F), and precipitation slowly increases to 3.2mm/day. The first solid W swells of autumn combined with mild water make September a promising transitional month for Cox Bay.
Average Spot conditions at Cox Bay in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Cox Bay 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 Cox Bay for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cox Bay 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 Cox Bay.