Conditions at Praia da Rocha in September
September: Autumn's First Whispers
September marks the first real sign that the North Atlantic is waking up. The average swell height is still small at 2.6ft (0.8m), but the average wave period jumps back over 10s to 10.3s, and ideal offshore wind improves to 37%. The wave rose remains dominated by NW (39.8%) and WNW (30.3%), with W (9.9%) and WSW (3.8%) starting to add more quality. The S-SSW-SW-WSW window is around 6.6%, so proper southwesterly swell is still the exception rather than the rule, but the trend is positive. Water temperature is holding at 19.6°C, air averages 21.0°C, and rainfall is still low at 0.75mm/day. It's a month for patience - the surf is beginning to build.
Average Spot conditions at Praia da Rocha in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Praia da Rocha 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 Rocha for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Praia da Rocha 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 Rocha.