Conditions at Hondarribia in October
October: When the North Atlantic Roars
October is where the story turns serious. The average swell height jumps to 1.6m (5.2ft) and the period stretches to 11.2s, signaling the return of real groundswell. NW and WNW dominate again-41% and 27% respectively-with NNW adding 9%. More importantly, the distribution shifts into the 1.5-2m and 2-2.5m classes, so Hondarribia starts to show its winter teeth. A negative phase of the NAO can send deep low-pressure systems straight into the Bay of Biscay, and the result is some of the most powerful pre-winter surf of the year.
Wind continues to be the limiting factor, but the statistics are encouraging. South winds lead at 12%, with SSW at 7% and W at 10%-so offshore tends to be available during and after frontal passages. The ideal wind percentage sits at 33%. When an Atlantic low approaches, expect a light southeast-to-south pre-frontal flow that keeps the swell clean; when it passes, watch for the NW onshore push.
Autumn air sits at 16.1°C, water is still warm at 18.5°C, and rain averages 3.30 mm/day. A 4/3 wetsuit is ideal, and the water is warm enough that you will not need a hood yet. October often delivers the best combination of size, frequency, and mild conditions all year.
Average Spot conditions at Hondarribia in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Hondarribia 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 Hondarribia for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Hondarribia 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 Hondarribia.