Conditions at Cantinho da Baia in September
September: The First Roar of Autumn
September marks the beginning of the comeback. Average swell height ticks up to 1.7m (5.6ft) and the period lengthens to 10.5s, signalling that the Atlantic is starting to wake up. Swell direction is well spread between NW (33.5%), NNW (33.1%), and WNW (15.5%), with a growing W component pushing more energy directly toward the beach. Wind remains mostly out of the NNW (40.4%), but the offshore quadrant gains a tiny foothold and ideal conditions return to 13% of the month. The early-autumn lows are beginning to stir, and when one aligns with the coast, September can deliver punchy, long-period waves in warm 18.7°C water. It is a transition month, but an exciting one.
Average Spot conditions at Cantinho da Baia in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Cantinho da Baia 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 Cantinho da Baia for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cantinho da Baia 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 Cantinho da Baia.