Zarautz, located on Spain's northern coast, offers consistent surf conditions year-round, but the best months for surfers are typically from October through February. During this period, ground swell dominates, with percentages ranging from 65% in October up to 84% in January, ensuring cleaner and more powerful waves. The mean swell size is also favorable, averaging between 1.2m and 1.7m, peaking in the winter months. Wind conditions improve slightly in these months, with a higher likelihood of good winds (33-34%) compared to the rest of the year. However, bad wind conditions still prevail (66-68%), so checking daily forecasts remains crucial. Spring and summer see a decline in quality, with ground swell dropping significantly from March onward, replaced by wind swell, which becomes dominant from May to August. Swell size diminishes to 0.8-1.0m during these months, and wind conditions worsen, with bad winds occurring over 75% of the time. September marks the transition back to better surf, with ground swell increasing again, though wind reliability remains low. For surfers seeking the strongest, cleanest waves, the winter months are ideal, despite the higher chance of onshore winds, while summer is better suited for beginners due to smaller, less powerful waves.