Conditions at Laredo in September
September: Autumn's First Real Pulse
September is where the North Atlantic starts waking up again. Average swell size rises to 1.2m (4ft) and period strengthens to 10.4s. The swell window remains NW-dominant, with NW at 53.8%, NNW at 21.9% and WNW at 10.2%, but there is also more NNE energy in the mix than during the summer months. A healthy 1-2m band appears, and the share of 2-2.5m waves climbs, signaling the return of true groundswell. Ideal offshore wind improves to 37%, though summer-like thermal winds still linger. Water temperature is warm at 20.3C and air temperature at 19.5C. September is an excellent crossover month: the ocean is still warm enough for a shorty, and the first autumn low pressures offer a sneak preview of the coming season. Keep an eye on the 10s+ period forecasts; those are the days Laredo flips from summer slop to genuine surf.
Average Spot conditions at Laredo in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Laredo 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 Laredo for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Laredo 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 Laredo.