10-day surf forecast with Strike Scores for Belharra, Saint-Jean-de-Luz, France
Belharra is France's premier big wave—a deepwater reef 2.5 kilometers offshore from Saint-Jean-de-Luz that only wakes up during the most massive North Atlantic storms. The wave requires tow-in assistance and breaks maybe a handful of days per winter; some years it doesn't break at all. When it does, Belharra produces giant, powerful A-frames in the 40-60 foot range. The Basque Country setting and the rarity of rideable swells make a Belharra session a career highlight for Europe's big wave elite.
Best day in the forecast: 2026-08-05 with a score of 15/100 (Poor)
Poor conditions overall: Average score 11/100. Look for spots with better forecasts.
Good alignment: Swell from 304° is 6° off optimal 310°, still within prime range.
Too small: 0.7m is below minimum 6.0m. Waves will be weak/mushy.
Short period: 7s is below minimum 16s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 8 km/h from 312° (NW). Destroying wave quality. Offshore range: 70°-150°.
Groundswell-dominant conditions (clean, long-period waves).
Poor conditions at Belharra. Either swell direction (304°), size (0.7m), or wind (8 km/h from 312°) is unfavorable. Consider other spots or wait for better conditions.
0.7m (2.3ft) swell from 304° (NW) at 7s period
Good alignment: Swell from 316° is 6° off optimal 310°, still within prime range.
Too small: 1.2m is below minimum 6.0m. Waves will be weak/mushy.
Short period: 8s is below minimum 16s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 14 km/h from 13° (NNE). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (316°), size (1.2m), or wind (14 km/h from 13°) is unfavorable. Consider other spots or wait for better conditions.
1.2m (3.9ft) swell from 316° (NW) at 8.2s period
Moderate alignment: Swell from 330° is 20° off optimal 310°, workable but not ideal.
Too small: 1.0m is below minimum 6.0m. Waves will be weak/mushy.
Onshore/cross-shore: 11 km/h from 305° (NW). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (330°), size (1.0m), or wind (11 km/h from 305°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 330° (NNW) at 6.7s period
Moderate alignment: Swell from 338° is 28° off optimal 310°, workable but not ideal.
Short period: 6s is below minimum 16s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 9 km/h from 18° (NNE). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (338°), size (0.7m), or wind (9 km/h from 18°) is unfavorable. Consider other spots or wait for better conditions.
0.7m (2.3ft) swell from 338° (NNW) at 6s period
Perfect alignment: Swell from 310° is within 5° of optimal 310°.
Too small: 0.6m is below minimum 6.0m. Waves will be weak/mushy.
Short period: 10s is below minimum 16s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 8 km/h from 7° (N). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (310°), size (0.6m), or wind (8 km/h from 7°) is unfavorable. Consider other spots or wait for better conditions.
0.6m (2.0ft) swell from 310° (NW) at 10s period
Good alignment: Swell from 312° is 2° off optimal 310°, still within prime range.
Too small: 0.8m is below minimum 6.0m. Waves will be weak/mushy.
Short period: 9s is below minimum 16s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 12 km/h from 50° (NE). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (312°), size (0.8m), or wind (12 km/h from 50°) is unfavorable. Consider other spots or wait for better conditions.
0.8m (2.6ft) swell from 312° (NW) at 9s period
Onshore/cross-shore: 9 km/h from 48° (NE). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (316°), size (1.2m), or wind (9 km/h from 48°) is unfavorable. Consider other spots or wait for better conditions.
1.2m (3.9ft) swell from 316° (NW) at 10s period
Moderate alignment: Swell from 318° is 8° off optimal 310°, workable but not ideal.
Too small: 0.9m is below minimum 6.0m. Waves will be weak/mushy.
Onshore/cross-shore: 10 km/h from 283° (WNW). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (318°), size (0.9m), or wind (10 km/h from 283°) is unfavorable. Consider other spots or wait for better conditions.
0.9m (3.0ft) swell from 318° (NW) at 9s period
Very low confidence (8-10 day forecast, conditions may change)
Moderate alignment: Swell from 299° is 11° off optimal 310°, workable but not ideal.
Onshore/cross-shore: 11 km/h from 353° (N). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (299°), size (1.0m), or wind (11 km/h from 353°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 299° (WNW) at 9s period
Moderate alignment: Swell from 293° is 17° off optimal 310°, workable but not ideal.
Too small: 0.5m is below minimum 6.0m. Waves will be weak/mushy.
Onshore/cross-shore: 8 km/h from 321° (NW). Destroying wave quality. Offshore range: 70°-150°.
Poor conditions at Belharra. Either swell direction (293°), size (0.5m), or wind (8 km/h from 321°) is unfavorable. Consider other spots or wait for better conditions.
0.5m (1.6ft) swell from 293° (WNW) at 7s period
Open-Meteo Weather API (wind/weather data)