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Conditions at Tramandao in September
September: Spring Swells, Onshore Bias
September brings the largest average swell of the year at 2.0m (6.6ft), a sign of increasing storm activity in the South Atlantic. However, the wind regime flips against surfers, with ideal wind down to 21%. The trade winds strengthen from the ENE (21.1%) and NE (20.9%), while offshore W flow drops to just 6.4%. Periods remain long at 9.1s, so if you can find a window of W/SW wind, the waves can be heavy and powerful. This is a month for chasing the local cold-front passages. Water temp sits at 16.8°C, air averages 16.8°C, and rain is the highest of the year at 5.00 mm/day.
Average Spot conditions at Tramandao in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Tramandao 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 Tramandao for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Tramandao 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 Tramandao.