10-day surf forecast with Strike Scores for Knokke-Heist, Knokke-Heist, West Flanders, Belgium
Knokke-Heist is Belgium's surf epicenter—a beach resort town that becomes the unlikely gathering point for the country's small but dedicated surf community when North Sea storms deliver rideable waves. The coastline barely faces the right direction and the water is freezing, but Belgian surfers make it work through sheer determination. When it's on, the entire Belgian surf scene shows up, creating a camaraderie born from shared suffering and limited options. This is Benelux surfing at its most committed.
Best day in the forecast: 2026-08-11 with a score of 13/100 (Poor)
Poor conditions overall: Average score 4/100. Look for spots with better forecasts.
Moderate alignment: Swell from 272° is 28° off optimal 300°, workable but not ideal.
Too small: 0.3m is below minimum 1.0m. Waves will be weak/mushy.
Short period: 6s is below minimum 9s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 20 km/h from 243° (WSW). Destroying wave quality. Offshore range: 60°-140°.
-10 points: Short-period windswell is present, creating choppy, disorganized conditions.
Poor conditions at Knokke-Heist. Either swell direction (272°), size (0.3m), or wind (20 km/h from 243°) is unfavorable. Consider other spots or wait for better conditions.
0.3m (1.0ft) swell from 272° (W) at 6s period
Local wind-generated waves (choppy, short-period)
Good alignment: Swell from 304° is 4° off optimal 300°, still within prime range.
Too small: 0.6m is below minimum 1.0m. Waves will be weak/mushy.
Short period: 5s is below minimum 9s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 17 km/h from 294° (WNW). Destroying wave quality. Offshore range: 60°-140°.
Groundswell-dominant conditions (clean, long-period waves).
Poor conditions at Knokke-Heist. Either swell direction (304°), size (0.6m), or wind (17 km/h from 294°) is unfavorable. Consider other spots or wait for better conditions.
0.6m (2.0ft) swell from 304° (NW) at 4.9s period
Poor alignment: Swell from 341° is 41° off optimal 300°, barely within workable range 280°-340°.
Too small: 0.7m is below minimum 1.0m. Waves will be weak/mushy.
Short period: 8s is below minimum 9s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 9 km/h from 316° (NW). Destroying wave quality. Offshore range: 60°-140°.
Poor conditions at Knokke-Heist. Either swell direction (341°), size (0.7m), or wind (9 km/h from 316°) is unfavorable. Consider other spots or wait for better conditions.
0.7m (2.3ft) swell from 341° (NNW) at 7.6s period
Poor alignment: Swell from 357° is 57° off optimal 300°, barely within workable range 280°-340°.
Too small: 0.5m is below minimum 1.0m. Waves will be weak/mushy.
Short period: 2s is below minimum 9s. Windswell-dominated (choppy, weak waves).
Light offshore: 9 km/h from 123° (ESE). Grooming the wave face beautifully.
Poor conditions at Knokke-Heist. Either swell direction (357°), size (0.5m), or wind (9 km/h from 123°) is unfavorable. Consider other spots or wait for better conditions.
0.5m (1.6ft) swell from 357° (N) at 1.8s period
Poor alignment: Swell from 332° is 32° off optimal 300°, barely within workable range 280°-340°.
Onshore/cross-shore: 16 km/h from 220° (SW). Destroying wave quality. Offshore range: 60°-140°.
-7 points: Short-period windswell is present, creating choppy, disorganized conditions.
Poor conditions at Knokke-Heist. Either swell direction (332°), size (0.3m), or wind (16 km/h from 220°) is unfavorable. Consider other spots or wait for better conditions.
0.3m (1.0ft) swell from 332° (NNW) at 6s period
Moderate alignment: Swell from 291° is 9° off optimal 300°, workable but not ideal.
Onshore/cross-shore: 18 km/h from 279° (W). Destroying wave quality. Offshore range: 60°-140°.
Poor conditions at Knokke-Heist. Either swell direction (291°), size (0.5m), or wind (18 km/h from 279°) is unfavorable. Consider other spots or wait for better conditions.
0.5m (1.6ft) swell from 291° (WNW) at 5s period
Poor alignment: Swell from 353° is 53° off optimal 300°, barely within workable range 280°-340°.
Short period: 7s is below minimum 9s. Windswell-dominated (choppy, weak waves).
Light offshore: 6 km/h from 138° (SE). Grooming the wave face beautifully.
Poor conditions at Knokke-Heist. Either swell direction (353°), size (0.5m), or wind (6 km/h from 138°) is unfavorable. Consider other spots or wait for better conditions.
0.5m (1.6ft) swell from 353° (N) at 7s period
Poor alignment: Swell from 349° is 49° off optimal 300°, barely within workable range 280°-340°.
Moderate period: 9s meets minimum 9s but below ideal 12s. Some groundswell energy present.
Onshore/cross-shore: 16 km/h from 192° (SSW). Destroying wave quality. Offshore range: 60°-140°.
Poor conditions at Knokke-Heist. Either swell direction (349°), size (0.3m), or wind (16 km/h from 192°) is unfavorable. Consider other spots or wait for better conditions.
0.3m (1.0ft) swell from 349° (N) at 9s period
Very low confidence (8-10 day forecast, conditions may change)
Moderate alignment: Swell from 309° is 9° off optimal 300°, workable but not ideal.
Onshore/cross-shore: 13 km/h from 276° (W). Destroying wave quality. Offshore range: 60°-140°.
Poor conditions at Knokke-Heist. Either swell direction (309°), size (0.5m), or wind (13 km/h from 276°) is unfavorable. Consider other spots or wait for better conditions.
0.5m (1.6ft) swell from 309° (NW) at 8s period
Onshore/cross-shore: 15 km/h from 252° (WSW). Destroying wave quality. Offshore range: 60°-140°.
Poor conditions at Knokke-Heist. Either swell direction (357°), size (0.3m), or wind (15 km/h from 252°) is unfavorable. Consider other spots or wait for better conditions.
0.3m (1.0ft) swell from 357° (N) at 6s period
Open-Meteo Weather API (wind/weather data)