Sopelana - surf spot statistics

Sopelana in Spain offers varying surf conditions throughout the year, with the best months typically falling in the winter and early spring. From January to March, the swell is predominantly ground swell (75-84%), which provides cleaner, more organized waves, averaging 1.4-1.6m in size. Wind conditions, however, are less favorable during these months, with only 29-30% of days seeing good offshore or cross-offshore winds. The swell consistency drops noticeably from April onward, with ground swells decreasing to 57% in April and falling below 40% from May to August. During this period, wind swells dominate, and the average swell size diminishes to 0.8-1.1m, making conditions less ideal for advanced surfers. September marks a transitional phase as ground swells start increasing again (45%), while October stands out as a solid month with 64% ground swells and slightly better wind conditions (34% good winds). November and December bring back stronger ground swells (72-79%) and decent wave heights (1.5m), though wind reliability remains inconsistent. Overall, the prime months for quality waves in Sopelana are October through March, with the highest consistency in swell and respectable wave size, despite the wind often being less than perfect. The summer months (May-August) are marginal, with smaller, wind-driven swells and fewer favorable wind days, making them better suited for beginners or longboarders. For serious surfers, the autumn and winter windows provide the best balance of swell power and rideable conditions.

December in Sopelana offers decent surf conditions with an average swell height of 1.5m and a solid period of 12.5s, indicating well-organized, powerful waves. The most consistent swells come from the NW, WNW, and NNW directions, delivering surfable conditions (1-2.5m) around 40% of the time, with larger waves (2m+) occurring roughly 10% of the month. Smaller days (0.5-1.5m) are frequent, making it suitable for all skill levels. Wind conditions are surfable only 31% of the time, with the most favorable winds typically light (0-20kph) and from the west or north. Stronger winds, especially from the south and southwest, can create choppy conditions, particularly when speeds exceed 20kph. Expect a mix of clean, groomed sessions and wind-affected days—best to monitor forecasts for NW swells paired with light offshore or side-shore winds for optimal surfing.