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Conditions at Guarda do Embau in September
September: Peak Size, Fickle Winds
September posts the largest average swell of the year at 4.9ft (1.5m), with a period of 9.2s. The directional spread is loaded with E/ESE/SE energy: E 20.8%, ESE 19.1%, ENE 18.4%, SE 15.4%, SSE 12.1%, and S 9.3%. There are serious quantities of 1.5-2.5m surf across the optimal quadrant; E, ESE, SE and S all have more than 4% in the 1.5-2m range, and the 2-2.5m range is well represented too.
Unfortunately, the wind window tightens. Ideal offshore flow drops to 20%, and NNE becomes the dominant wind at 22.5%, with N adding 14.0%. Springtime instability creates switchy conditions, but SSW (15.9%) and S (8.1%) flow can still save the day. Water is 18.5°C, air 17.0°C, and rain is 4.67 mm/day. When it comes together, September can serve up the biggest, most powerful surf of the year; when it does not, NE winds turn it into 5ft (1.5m) mush.
Average Spot conditions at Guarda do Embau in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Guarda do Embau 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 Guarda do Embau for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Guarda do Embau 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 Guarda do Embau.