Les Cavaliers - surf spot statistics

Best Surf Season (November - March)

Winter at Les Cavaliers is when the North Atlantic truly delivers. From November through March, the clash of cold Arctic air masses with the mild waters of the Gulf Stream generates a relentless parade of low-pressure systems. These systems send powerful, long-period WNW-to-NW groundswells marching toward the French coast. Average wave heights sit in the 1.6m to 1.8m range with periods often exceeding 12 seconds, translating into clean, hollow waves breaking along the beach. The wind statistics are equally promising: offshore to side-offshore breezes from the south through southwest quadrants blow over 40% of the time, creating pristine, glassy conditions. This is the prime window for experienced surfers to chase pumping, firing sets at this exposed WNW-facing beach.

Fair Surf Season (April & October)

These shoulder months mark the transition between the active winter pattern and the sluggish summer regime. April sees the last of the strong winter storms, with average swell dropping to 1.2m and periods slipping to 11 seconds. While still rideable, the consistency decreases, and the window for offshore winds narrows to about 29% of the time. October, conversely, is the awakening month: the first autumn lows begin to spin up, boosting average wave heights back to 1.3m and periods to 11.3s. Ideal wind percentages jump to 41% as the thermal gradient reestablishes. These months offer a mixed bag – expect some quality days mixed with flat spells or less favorable wind, but the potential for excellent sessions remains.

Low Surf Season (May - September)

Summer arrives with a dramatic shift in the atmospheric steering currents. The jet stream retreats northward, and the North Atlantic storm track weakens considerably. Swell heights dwindle to an average of 0.9m to 1.1m from May through September, with wave periods hovering around 9 to 10 seconds – typical of weak, short-period windswell. The dominant wind pattern becomes onshore, with westerly and northwesterly breezes prevailing. Ideal offshore wind percentages plummet to between 16% and 29%, making clean waves a rare commodity. During this period, Les Cavaliers is best suited for longboarders and beginners looking for small, fun-sized waves in the early morning windows when local land breezes can occasionally offer a few hours of groomed conditions. The upside? Warmer water and lighter crowds.

December: The Peak of Power

December tops the chart for surf consistency and quality. Average swell height holds at 1.7m and the period stretches to 12.6s, with substantial energy in the 1.5-2.5m and even over 2.5m categories. WNW and NW swell directions account for 72% of the wave energy, and the fetch from the North Atlantic storms is at its maximum. Ideal wind frequency reaches the annual high of 48%, as the polar front jet stream steers low-pressure systems across the UK and into Scandinavia, leaving the Bay of Biscay in a favorable southwesterly flow. The wind rose shows that offshore directions (SSW through W) are the most common individual wind category. December offers the best chance of scoring clean, powerful, long-period swell with light to moderate offshore winds. This is the month to mark your calendar – Les Cavaliers is at its absolute best.