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Conditions at Denvils in September
September: Spring Transition, Still Plenty of Punch
September starts the spring shift while keeping the winter swell alive. Average height drops slightly to 7.5ft (2.3m), period settles at 11.7s, and the swell rose shows SSW (21.2%) and SW (20.1%) still running hard, with S (10.1%) adding consistency. The shorter period compared to July means the swell can be slightly less organized but still powerful.
The wind regime is getting better: ideal time is 22%, with WSW (20.3%) and SW (9.8%) being the dominant clean wind sources. ENE (11.0%) and E (10.0%) begin to build the spring trade wind component, bringing some afternoon texture. Water temp 17.6°C, air temp 16.9°C-a great month to pick off leftover winter swells with cleaner surface.
Average Spot conditions at Denvils in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Denvils 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 Denvils for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Denvils 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 Denvils.