Conditions at Cabedelo de Viana in September
September: First Autumn Pulse
September is where the transition back to real surf begins. The average swell height rises to 1.6m (5.2ft), the average period lengthens to 10.4s, and the North Atlantic starts sending more organized groundswell toward the Portuguese coast. NW still dominates the swell rose at 34.1 percent, with WNW 22.8 percent and NNW 22.4 percent behind it, but those periods are stretching out and giving the waves more push. At 60 percent ideal wind, September also retains the clean summer wind profile, making it one of the best quality-to-size ratios of the year. Water temperatures are still warm at 16.6°C, air temps average 19.2°C, and rain begins to creep back to around 2 mm/day. This is the month on many surfers' radars: the crowds ease slightly, the first real groundswell of autumn arrives, and the offshore winds are often excellent.
Average Spot conditions at Cabedelo de Viana in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Cabedelo de Viana 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 Cabedelo de Viana for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cabedelo de Viana 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 Cabedelo de Viana.