Zurriola - surf spot statistics

Zurriola in Spain offers the most consistent surf conditions during the winter months, particularly from October through February, when ground swell dominates with percentages ranging from 65% to 85%. The mean swell size during this period averages between 1.2m and 1.6m, providing solid wave energy for intermediate to advanced surfers. However, wind conditions are less favorable in these months, with bad onshore winds occurring 65–68% of the time, peaking in December and January. The best window for cleaner conditions is typically in October and November, when good wind days reach 32–35%. Spring (March–May) sees a gradual decline in ground swell (40–76%) and an increase in wind swell, while summer (June–August) delivers smaller, less reliable waves (0.8m mean size) dominated by wind swell, coupled with poor wind conditions (79–84% bad winds). September marks the transition back to better ground swell (47%) and slightly improved winds (26% good), making early autumn a reasonable alternative if winter conditions are too crowded or unruly. For the most powerful and consistent surf, target October–February, but expect challenging winds—early sessions or sheltered spots may help mitigate this. Summer is best suited for beginners due to smaller waves, though wind interference remains an issue.

March at Zurriola offers decent surf conditions with an average swell height of 1.4m and a solid period of 12.3s, suggesting well-organized, powerful waves. The swell is predominantly from the NW-NNW sector, with the highest frequency in the 0.5-2.5m range, peaking around 1-2m. This direction typically aligns with the spot’s orientation, creating clean, rideable waves. Larger swells (2-2.5m) occur occasionally, providing more challenging sessions for experienced surfers. Wind conditions are most favorable 28% of the time, with light to moderate speeds (0-20kph) from the W-NW quadrant being ideal—offshore or cross-offshore for clean faces. Stronger onshore winds (S-SSW) can occasionally degrade conditions, but they’re less frequent. Overall, March delivers consistent, mid-sized surf with good shape, especially on NW swells and lighter winds, though variability requires checking daily forecasts for optimal sessions.