10-day surf forecast with Strike Scores for Waimea Bay, North Shore, Oahu, USA
Waimea Bay is the birthplace of big wave surfing—a thundering right-hander that only truly comes alive when swells exceed 15 feet. When it's on, the takeoff is a heart-stopping drop into a churning wall of whitewater. The Eddie Aikau Big Wave Invitational is held here, requiring 20ft+ consistent surf.
Best day in the forecast: 2026-08-04 with a score of 0/100 (Poor)
Poor conditions overall: Average score 0/100. Look for spots with better forecasts.
No alignment: Swell from 172° is outside workable range 300°-340°. Wrong swell direction for this spot.
Too small: 0.8m is below minimum 4.6m. Waves will be weak/mushy.
Short period: 10s is below minimum 14s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 12 km/h from 75° (ENE). Destroying wave quality. Offshore range: 90°-160°.
-11 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
Groundswell-dominant conditions (clean, long-period waves).
Poor conditions at Waimea Bay. Either swell direction (172°), size (0.8m), or wind (12 km/h from 75°) is unfavorable. Consider other spots or wait for better conditions.
0.8m (2.6ft) swell from 172° (S) at 10s period
No alignment: Swell from 178° is outside workable range 300°-340°. Wrong swell direction for this spot.
Onshore/cross-shore: 16 km/h from 77° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (178°), size (0.8m), or wind (16 km/h from 77°) is unfavorable. Consider other spots or wait for better conditions.
0.8m (2.6ft) swell from 178° (S) at 10s period
Local wind-generated waves (choppy, short-period)
No alignment: Swell from 182° is outside workable range 300°-340°. Wrong swell direction for this spot.
Too small: 0.7m is below minimum 4.6m. Waves will be weak/mushy.
Onshore/cross-shore: 16 km/h from 75° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (182°), size (0.7m), or wind (16 km/h from 75°) is unfavorable. Consider other spots or wait for better conditions.
0.7m (2.3ft) swell from 182° (S) at 10s period
No alignment: Swell from 188° is outside workable range 300°-340°. Wrong swell direction for this spot.
Short period: 13s is below minimum 14s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 17 km/h from 78° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (188°), size (0.7m), or wind (17 km/h from 78°) is unfavorable. Consider other spots or wait for better conditions.
0.7m (2.3ft) swell from 188° (S) at 13s period
No alignment: Swell from 189° is outside workable range 300°-340°. Wrong swell direction for this spot.
Too small: 0.9m is below minimum 4.6m. Waves will be weak/mushy.
Short period: 12s is below minimum 14s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 19 km/h from 77° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (189°), size (0.9m), or wind (19 km/h from 77°) is unfavorable. Consider other spots or wait for better conditions.
0.9m (3.0ft) swell from 189° (S) at 12s period
No alignment: Swell from 181° is outside workable range 300°-340°. Wrong swell direction for this spot.
Too small: 1.0m is below minimum 4.6m. Waves will be weak/mushy.
Onshore/cross-shore: 20 km/h from 72° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (181°), size (1.0m), or wind (20 km/h from 72°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 181° (S) at 10s period
No alignment: Swell from 161° is outside workable range 300°-340°. Wrong swell direction for this spot.
Onshore/cross-shore: 17 km/h from 75° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (161°), size (1.0m), or wind (17 km/h from 75°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 161° (SSE) at 12s period
No alignment: Swell from 190° is outside workable range 300°-340°. Wrong swell direction for this spot.
Onshore/cross-shore: 18 km/h from 77° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (190°), size (1.0m), or wind (18 km/h from 77°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 190° (S) at 13s period
Very low confidence (8-10 day forecast, conditions may change)
No alignment: Swell from 191° is outside workable range 300°-340°. Wrong swell direction for this spot.
Too small: 1.3m is below minimum 4.6m. Waves will be weak/mushy.
Moderate period: 15s meets minimum 14s but below ideal 18s. Some groundswell energy present.
Onshore/cross-shore: 16 km/h from 73° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (191°), size (1.3m), or wind (16 km/h from 73°) is unfavorable. Consider other spots or wait for better conditions.
1.3m (4.3ft) swell from 191° (S) at 15s period
Too small: 1.6m is below minimum 4.6m. Waves will be weak/mushy.
Onshore/cross-shore: 19 km/h from 76° (ENE). Destroying wave quality. Offshore range: 90°-160°.
Poor conditions at Waimea Bay. Either swell direction (188°), size (1.6m), or wind (19 km/h from 76°) is unfavorable. Consider other spots or wait for better conditions.
1.6m (5.2ft) swell from 188° (S) at 13s period
Open-Meteo Weather API (wind/weather data)