10-day surf forecast with Strike Scores for Half Moon Bay, Antigua, Antigua & Barbuda
Half Moon Bay is Antigua's premier surf beach—a crescent-shaped bay on the southeast coast that picks up NE swells. The picturesque setting and consistent waves make it the island's go-to surf spot.
Best day in the forecast: 2026-08-06 with a score of 12/100 (Poor)
Poor conditions overall: Average score 4/100. Look for spots with better forecasts.
Poor alignment: Swell from 99° is 54° off optimal 45°, barely within workable range 30°-80°.
Marginal size: 1.0m is 0.3m from ideal 1.3m.
Moderate period: 8s meets minimum 8s but below ideal 12s. Some groundswell energy present.
Onshore/cross-shore: 18 km/h from 73° (ENE). Destroying wave quality. Offshore range: 240°-300°.
-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 Half Moon Bay. Either swell direction (99°), size (1.0m), or wind (18 km/h from 73°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 99° (E) at 8s period
Local wind-generated waves (choppy, short-period)
Poor alignment: Swell from 97° is 52° off optimal 45°, barely within workable range 30°-80°.
Marginal size: 0.8m is 0.5m from ideal 1.3m.
Good period: 11s is 92% of ideal 12s. Clean, powerful groundswell.
Onshore/cross-shore: 19 km/h from 112° (ESE). Destroying wave quality. Offshore range: 240°-300°.
Poor conditions at Half Moon Bay. Either swell direction (97°), size (0.8m), or wind (19 km/h from 112°) is unfavorable. Consider other spots or wait for better conditions.
0.8m (2.6ft) swell from 97° (E) at 11s period
Poor alignment: Swell from 92° is 47° off optimal 45°, barely within workable range 30°-80°.
Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
Onshore/cross-shore: 21 km/h from 99° (E). Destroying wave quality. Offshore range: 240°-300°.
Poor conditions at Half Moon Bay. Either swell direction (92°), size (1.0m), or wind (21 km/h from 99°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 92° (E) at 9s period
Marginal size: 1.1m is 0.2m from ideal 1.3m.
Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
Onshore/cross-shore: 21 km/h from 86° (E). Destroying wave quality. Offshore range: 240°-300°.
-10 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
Poor conditions at Half Moon Bay. Either swell direction (99°), size (1.1m), or wind (21 km/h from 86°) is unfavorable. Consider other spots or wait for better conditions.
1.1m (3.6ft) swell from 99° (E) at 10s period
Poor alignment: Swell from 102° is 57° off optimal 45°, barely within workable range 30°-80°.
Marginal size: 1.2m is 0.1m from ideal 1.3m.
Onshore/cross-shore: 24 km/h from 74° (ENE). Destroying wave quality. Offshore range: 240°-300°.
-17 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
Poor conditions at Half Moon Bay. Either swell direction (102°), size (1.2m), or wind (24 km/h from 74°) is unfavorable. Consider other spots or wait for better conditions.
1.2m (3.9ft) swell from 102° (ESE) at 10s period
Marginal size: 1.4m is 0.1m from ideal 1.3m.
Onshore/cross-shore: 21 km/h from 90° (E). Destroying wave quality. Offshore range: 240°-300°.
-21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
Poor conditions at Half Moon Bay. Either swell direction (97°), size (1.4m), or wind (21 km/h from 90°) is unfavorable. Consider other spots or wait for better conditions.
1.4m (4.6ft) swell from 97° (E) at 10s period
Poor alignment: Swell from 93° is 48° off optimal 45°, barely within workable range 30°-80°.
Onshore/cross-shore: 20 km/h from 82° (E). Destroying wave quality. Offshore range: 240°-300°.
Poor conditions at Half Moon Bay. Either swell direction (93°), size (1.2m), or wind (20 km/h from 82°) is unfavorable. Consider other spots or wait for better conditions.
1.2m (3.9ft) swell from 93° (E) at 9s period
Poor alignment: Swell from 89° is 44° off optimal 45°, barely within workable range 30°-80°.
Onshore/cross-shore: 18 km/h from 94° (E). Destroying wave quality. Offshore range: 240°-300°.
Poor conditions at Half Moon Bay. Either swell direction (89°), size (1.0m), or wind (18 km/h from 94°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 89° (E) at 10s period
Very low confidence (8-10 day forecast, conditions may change)
Poor alignment: Swell from 87° is 42° off optimal 45°, barely within workable range 30°-80°.
Onshore/cross-shore: 26 km/h from 103° (ESE). Destroying wave quality. Offshore range: 240°-300°.
-7 points: Short-period windswell is present, creating choppy, disorganized conditions.
Poor conditions at Half Moon Bay. Either swell direction (87°), size (0.8m), or wind (26 km/h from 103°) is unfavorable. Consider other spots or wait for better conditions.
0.8m (2.6ft) swell from 87° (E) at 9s period
No alignment: Swell from 105° is outside workable range 30°-80°. Wrong swell direction for this spot.
Marginal size: 1.3m is 0.0m from ideal 1.3m.
Perfect period: 13s is at or above ideal 12s. Long-period groundswell with maximum power.
Onshore/cross-shore: 26 km/h from 100° (E). Destroying wave quality. Offshore range: 240°-300°.
-5 points: Short-period windswell is present, creating choppy, disorganized conditions.
Poor conditions at Half Moon Bay. Either swell direction (105°), size (1.3m), or wind (26 km/h from 100°) is unfavorable. Consider other spots or wait for better conditions.
1.3m (4.3ft) swell from 105° (ESE) at 13s period
Open-Meteo Weather API (wind/weather data)