Conditions at Praia da Barra in September
September: The Transition Begins
September is the great turnaround month. The average swell height climbs slightly to 5ft (1.6m), period lengthens to 10.4s, and ideal offshore wind returns to 30 percent. Swell direction is still mostly NW (39 percent) and NNW (22 percent), but WNW (22 percent) is now delivering more west in the mix, and the first low-pressure systems of autumn are starting to organize. The persistent NNW wind drops to 33 percent, while offshore E/ENE and NE winds become far more common. Water temperature peaks at 17.8°C, so the surf is still warm while the air carries that first crisp edge. Expect clean, fun waves with the occasional standout day when a solid groundswell aligns with morning offshore flow.
Average Spot conditions at Praia da Barra in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Praia da Barra 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 Praia da Barra for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Praia da Barra 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 Praia da Barra.