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Conditions at Stoney Beach in September
September: Spring Gears Up
September is the first real spring month, and the shift back toward Stoney's preferred swell window begins. Average height settles at 1.2m, period eases to 9.9s, and ideal wind frequency is 28%. ENE remains the dominant swell at 17.3%, but NE jumps to 10.2% and NNE/N add another 4.2%, putting the preferred N-ENE quadrant at nearly 32% of the spectrum. NE winds are still frequent at 10.8%, yet SSW and SW combine for nearly 17%, offering clean windows behind each front. Sea temp is still cold at 10.1°C, air averages 9.8°C, rain 1.50mm/day. This is a transition month with some of the best dawn surfs of the year-offshore SW wind, leftover long-period ENE swell, and empty banks.
Average Spot conditions at Stoney Beach in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Stoney 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 Stoney Beach for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Stoney 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 Stoney Beach.