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Conditions at Victoria Bay in September
September: Spring Builds Toward More Southerly Swell
September is a transition month with bragging rights. The average swell height is still a robust 8.5ft (2.6m) and the period sits at 11.6s, but ideal wind frequency eases to 41% as ESE trade winds start reasserting themselves. The wind rose is more mixed, with WSW at 10%, W at 9%, E/ESE at 9% each, and a moderating NNW flow at 8%.
This is when the direct ESE-S swell window starts to reappear more meaningfully, reaching 20% of the total, with S at 7%, SSE 6%, SE 4%, and ESE 3%. Still, the bulk of the energy comes from SW at 21% and SSW at 16%, so the bay remains wintry in size and power. Air temps begin to rise to 15.3°C, water temp ticks up slightly to 16.0°C, and the long-period southern ocean groundswell keeps working through the less predictable spring wind.
Average Spot conditions at Victoria Bay in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Victoria 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 Victoria Bay for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Victoria 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 Victoria Bay.