Conditions at Sopelana in September
September: The Autumn Reawakening
September is when the North Atlantic starts showing signs of life again, and Sopelana is one of the best places in the region to feel it. Average swell heights climb back to 1.2m (4ft), and periods stretch to 10.3s, crossing the threshold into powerful long-period territory. NW is the dominant force, contributing 52% of all swell, with nearly 88% of the energy arriving from the preferred N, NW, WNW and NNW compass points. Even better, the ideal wind score jumps to 35%, a great sign for surf quality. The sea is still warm at 20.4°C, air temps average 19.5°C, and showers are manageable at 2.04mm/day. This is a classic transition month where you can score clean, head-high-plus waves without the brutal winter cold.
Average Spot conditions at Sopelana in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sopelana 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 Sopelana for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sopelana 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 Sopelana.