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Conditions at Flowrider in September
September: Spring Transition Begins
September is a transition month with a distinct edge. The average swell stays at a hefty 1.8m (5.9ft), but the average period drops to 9.6s and ideal wind falls to 34%, signalling the return of the trade-wind season. The swell direction remains favourable: ENE 13.7%, E 13.5%, ESE 12.5%, SE 14.5%, and S 19.4%. The S/SSE energy is still powerful, but the wind distribution shows NE (14.0%) and SSW (15.9%) growing, while ideal westerly flow starts to weaken. Water temperature holds around 21.5°C, air averages 19.9°C, and rainfall picks up slightly to 1.46mm/day. The early spring swells are often raw and unrefined, but when the morning offshore holds, Flowrider can still produce excellent, powerful waves.
Average Spot conditions at Flowrider in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Flowrider 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 Flowrider for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Flowrider 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 Flowrider.