Biarritz - surf spot statistics

Biarritz, France, offers consistent surf conditions year-round, but the best months for surfing are typically from October through February, when ground swell dominates and wave quality is at its peak. During this period, ground swell percentages range from 66% in October to 88% in January, ensuring powerful, well-formed waves with mean swell sizes between 1.4m and 2.0m. Wind conditions are also more favorable compared to other times of the year, with good wind percentages peaking at 43% in December. The autumn and winter months bring the largest and most reliable swells, attracting experienced surfers looking for powerful, clean waves. Spring (March to May) and summer (June to August) see a decline in ground swell dominance, with wind swell becoming more prevalent. Wave quality diminishes, particularly in summer, when ground swell drops to as low as 19% in July, and mean swell size hovers around 1.0m. Wind conditions worsen, with good wind percentages falling below 30% from April onward, making onshore winds more frequent. While still surfable, especially for beginners or those happy with smaller waves, these seasons are less ideal for advanced surfers seeking solid groundswell and clean conditions. September marks a transitional month as ground swell begins to increase again, setting the stage for the high season ahead. Overall, the optimal window for the best surf in Biarritz is late autumn through winter, when powerful, clean groundswell combines with relatively better wind conditions for high-performance surfing.

September in Biarritz offers fairly consistent surf conditions with a focus on mid-sized swells and variable winds. The average swell height is 1.2m, supported by a solid 10.6s period, providing clean, well-spaced waves ideal for performance surfing. The swell direction is predominantly from the NW and WNW, accounting for the majority of rideable waves, especially in the 0.5-2.5m range, with NW swells delivering the highest frequency of quality waves (21.89% at 0.5-1m and 21.67% at 1-1.5m). While smaller swells (0-0.5m) are common from the NW and WNW too, the best sessions will come from mid-sized NW/WNW energy. Wind conditions are somewhat mixed, with only 31% of days offering ideal offshore or light cross-shore winds. The most favorable winds come from the NE to E quadrant, providing clean faces, though SW and W winds (which are more prevalent) can create chop. Stronger winds (20-30kph) are most frequent from the W and WNW, potentially disrupting conditions. Surfers should target days with NW/WNW swell and NE/E winds for the cleanest waves, though patience may be needed as less than a third of September days align perfectly. Overall, it's a decent month with regular rideable waves but requires selective timing for optimal sessions.