Getxo seasonal overview
Best Surf Season (October - March)
The North Atlantic swings into full production mode from October through March, delivering a consistent barrage of WNW to NW groundswells to Getxo's west-northwest-facing coastline. Average wave heights hover between 1.5m and 2.1m with long-period energy (11–12.8s) that translates into powerful, well-structured lines. Offshore wind percentages peak at 44–50%, driven by a dominant SSW to S flow that cleans up the swell beautifully. This is prime time for pumping, firing surf – a classic Basque winter.
Fair Surf Season (April & September)
April and September serve as transitional windows with average swell heights of 1.2–1.4m and periods around 10–11s. The swell quality remains respectable – mostly fun, rippable waves – though the size and power dip compared to peak winter. Wind statistics remain favorable, with 41–44% offshore conditions, mainly from the SSW and S quadrants. The crowds thin out, and clean long-period pulses still sneak in between summer lulls.
Low Surf Season (May - August)
From May through August, the North Atlantic storm track retreats northward, resulting in smaller, shorter-period swells. Average heights drop to 1.0–1.2m with periods around 8.8–9.9s – often choppy and grovelly. While NW groundswell still dominates, the energy is less powerful. Offshore wind percentages decline to 36–39%, and onshore sea breezes frequently spoil the shape. This is the season for small-wave gear and chasing the rare early-morning glass-off.
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Conditions at Getxo in September
September: Autumn Stirrings
September shows the first real signs of recovery, with average swell height rising to 1.2m and period lengthening to 10.3s. The NW (51.8%) quadrant still dominates, but now a bigger percentage falls into the 1–2m range (30.2%), hinting at better groundswell. Ideal wind jumps to 44%, with S (8.4%) and SSW (6.8%) winds making a comeback. This month offers a mix of fun, rippable waves and occasional stronger pulses from early autumn storms. Onshore winds from the west and northwest are less frequent than in summer. The window for clean, medium-sized surf widens – a promising time for a surf.
Average Spot conditions at Getxo in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Getxo 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 Getxo for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Getxo 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 Getxo.
