Conditions at Foz do Lizandro in September
September: Autumn's First Real Groundswell
September is where the low season begins to cave to the rising Atlantic energy. Average swell height ticks back up to 5.3ft (1.6m), but more importantly the period extends to 10.5s, hinting at the return of true groundswell. Swell distribution still favors NW (36.0%) and NNW (34.4%), with a healthy 15.4% from the WNW-all prime directions for the WNW beach.
Wind is also improving. The nortada weakens somewhat (NNW 36.0% vs 54.7% in August), and ideal offshore flow doubles to 12%. You still get cross-shore days, but there are now real windows of clean, lined-up surf. Water temperature reaches the seasonal peak of 18.2°C, air is 19.8°C, and rain is still modest (0.95mm/day). September tends to be the connoisseur's pick: warm water, less crowd than summer, and a taste of winter's power.
Average Spot conditions at Foz do Lizandro in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Foz do Lizandro 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 Foz do Lizandro for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Foz do Lizandro 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 Foz do Lizandro.