Conditions at Zurriola in October
October: The North Atlantic Roars to Life
The North Atlantic roars to life during October, and Zurriola responds immediately. Average swell heights jump to 1.6m (5ft) and periods extend to 11.2s as the first strong extratropical storms of the season begin carving across the ocean. This is due to a climatological increase in storm frequency and intensity along the Atlantic storm track, often amplified by a shifting NAO state that dips the jet stream toward the Bay of Biscay. The swell window is packed with NW (41.5) and WNW (27.4) energy, and a healthy southerly wind supply - S at 17.5 percent, cross-offshore SSE at 10.7 and SSW at 7.6 - pushes the ideal wind score to 43 percent, matching the winter months. Still, when the right combination emerges - long-period swell, sunny skies and light winds - that is when the great waves really come to life. The sea, at 18.5°C, is still surprisingly warm and the air averages a mild 16.1°C. October is the perfect autumn surf month: the cold has not yet bitten, but the winter swell machine is already revving hard.
Average Spot conditions at Zurriola in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Zurriola during October. 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 Zurriola for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Zurriola for October. 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 Zurriola.