Conditions at El Sardinero in September
September: The First Sign of Autumn
September is the bridge from summer flatness to winter power. The numbers start to improve: average swell height climbs to 4.3ft (1.3m), period lengthens to 10.4s, and the NW quadrant still owns 53.3% of the distribution. More importantly, the 5-6.5ft (1.5-2m) class becomes more frequent, and the first long-period WNW pulses can show up as Atlantic lows begin to spin up. The catch is wind: ideal wind remains at the yearly low of 38%, and ENE/E winds are still common. But when an early autumn cold front pushes through, SW offshore flow can groom a clean, solid day. Water temp is still warm at 20.5°C, and air temps average 19.1°C, making September one of the most pleasant months to surf when it actually comes alive.
Average Spot conditions at El Sardinero in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at El Sardinero 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 El Sardinero for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at El Sardinero 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 El Sardinero.