Surf Forecast for Boca Grandi
type: Dataset
description: 10-day surf forecast with Strike Scores for Boca Grandi, Aruba, Aruba
about: Boca Grandi
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: 12.44146
    longitude: -69.87454
  description: Boca Grandi is Aruba's main surf spot—a beach break on the windswept southeast coast that picks up Atlantic swells. Known more for windsurfing and kitesurfing, but consistent waves attract a dedicated surf crew.
summary:
  best day:
    date: 2026-08-04
    score: 0
    category: Poor
    explanation: Best day in the forecast: 2026-08-04 with a score of 0/100 (Poor)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 0/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-04
  day index: 0
  strike score:
    final score: 0
    category: Poor
    category emoji: 💤
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 9
        out of: 25
        explanation: Poor alignment: Swell from 68° is 32° off optimal 100°, barely within workable range 60°-140°.
      swell size:
        score: 9
        out of: 25
        explanation: Marginal size: 0.9m is 0.7m from ideal 1.6m.
      swell period:
        score: 2
        out of: 25
        explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 0
        out of: 25
        explanation: Onshore/cross-shore: 34 km/h from 90° (E). Destroying wave quality. Offshore range: 240°-300°.
    adjustments:
      wind history:
        adjustment: -21
        groomed: false
        morning sickness: true
        explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
      windswell penalty:
        adjustment: -10
        windswell degraded: true
        explanation: -10 points: Short-period windswell is present, creating choppy, disorganized conditions.
      secondary swell bonus:
        adjustment: 0
        explanation: No secondary swell bonus.
    summary: Poor conditions at Boca Grandi. Either swell direction (68°), size (0.9m), or wind (34 km/h from 90°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.9
      height ft: 3.0
      direction degrees: 68
      direction cardinal: ENE
      period s: 6
      explanation: 0.9m (3.0ft) swell from 68° (ENE) at 6s period
    wind:
      speed kmh: 34
      speed mph: 21.1
      direction degrees: 90
      direction cardinal: E
      explanation: 34 km/h (21 mph) from 90° (E)
    windswell:
      height m: 1.4
      period s: 4
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-05
  day index: 1
  strike score:
    final score: 0
    category: Poor
    category emoji: 💤
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 6
        out of: 25
        explanation: Poor alignment: Swell from 54° is 46° off optimal 100°, barely within workable range 60°-140°.
      swell size:
        score: 8
        out of: 25
        explanation: Marginal size: 0.8m is 0.8m from ideal 1.6m.
      swell period:
        score: 2
        out of: 25
        explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 0
        out of: 25
        explanation: Onshore/cross-shore: 29 km/h from 86° (E). Destroying wave quality. Offshore range: 240°-300°.
    adjustments:
      wind history:
        adjustment: -21
        groomed: false
        morning sickness: true
        explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
      windswell penalty:
        adjustment: -7
        windswell degraded: true
        explanation: -7 points: Short-period windswell is present, creating choppy, disorganized conditions.
      secondary swell bonus:
        adjustment: 0
        explanation: No secondary swell bonus.
    summary: Poor conditions at Boca Grandi. Either swell direction (54°), size (0.8m), or wind (29 km/h from 86°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.8
      height ft: 2.6
      direction degrees: 54
      direction cardinal: NE
      period s: 6
      explanation: 0.8m (2.6ft) swell from 54° (NE) at 6s period
    wind:
      speed kmh: 29
      speed mph: 18.0
      direction degrees: 86
      direction cardinal: E
      explanation: 29 km/h (18 mph) from 86° (E)
    windswell:
      height m: 1
      period s: 4
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-06
  day index: 2
  strike score:
    final score: 0
    category: Poor
    category emoji: 💤
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 3
        out of: 25
        explanation: Poor alignment: Swell from 49° is 51° off optimal 100°, barely within workable range 60°-140°.
      swell size:
        score: 8
        out of: 25
        explanation: Marginal size: 0.8m is 0.8m from ideal 1.6m.
      swell period:
        score: 2
        out of: 25
        explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 0
        out of: 25
        explanation: Onshore/cross-shore: 31 km/h from 97° (E). Destroying wave quality. Offshore range: 240°-300°.
    adjustments:
      wind history:
        adjustment: -21
        groomed: false
        morning sickness: true
        explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
      windswell penalty:
        adjustment: -7
        windswell degraded: true
        explanation: -7 points: Short-period windswell is present, creating choppy, disorganized conditions.
      secondary swell bonus:
        adjustment: 0
        explanation: No secondary swell bonus.
    summary: Poor conditions at Boca Grandi. Either swell direction (49°), size (0.8m), or wind (31 km/h from 97°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.8
      height ft: 2.6
      direction degrees: 49
      direction cardinal: NE
      period s: 6
      explanation: 0.8m (2.6ft) swell from 49° (NE) at 6s period
    wind:
      speed kmh: 31
      speed mph: 19.3
      direction degrees: 97
      direction cardinal: E
      explanation: 31 km/h (19 mph) from 97° (E)
    windswell:
      height m: 1.1
      period s: 4
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-07
  day index: 3
  strike score:
    final score: 0
    category: Poor
    category emoji: 💤
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 2
        out of: 25
        explanation: Poor alignment: Swell from 47° is 53° off optimal 100°, barely within workable range 60°-140°.
    summary: Poor conditions at Boca Grandi. Either swell direction (47°), size (0.8m), or wind (35 km/h from 85°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-04T23:50:12.571Z
temporal coverage: 2026-08-04/2026-08-13
data sources: Open-Meteo Marine API (swell/wave data)
data sources: Open-Meteo Weather API (wind/weather data)

score: 8
out of: 25
explanation: Marginal size: 0.8m is 0.8m from ideal 1.6m.

score: 4
out of: 25
explanation: Short period: 7s is below minimum 8s. Windswell-dominated (choppy, weak waves).

score: 0
out of: 25
explanation: Onshore/cross-shore: 35 km/h from 85° (E). Destroying wave quality. Offshore range: 240°-300°.

wind history:
  adjustment: -21
  groomed: false
  morning sickness: true
  explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
windswell penalty:
  adjustment: -10
  windswell degraded: true
  explanation: -10 points: Short-period windswell is present, creating choppy, disorganized conditions.
secondary swell bonus:
  adjustment: 0
  explanation: No secondary swell bonus.

swell:
  height m: 0.8
  height ft: 2.6
  direction degrees: 47
  direction cardinal: NE
  period s: 7
  explanation: 0.8m (2.6ft) swell from 47° (NE) at 7s period
wind:
  speed kmh: 35
  speed mph: 21.7
  direction degrees: 85
  direction cardinal: E
  explanation: 35 km/h (22 mph) from 85° (E)
windswell:
  height m: 1.5
  period s: 4
  explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-08
day index: 4
strike score:
  final score: 0
  category: Poor
  category emoji: 💤
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 1
      out of: 25
      explanation: Poor alignment: Swell from 43° is 57° off optimal 100°, barely within workable range 60°-140°.
    swell size:
      score: 3
      out of: 25
      explanation: Too small: 0.6m is below minimum 0.8m. Waves will be weak/mushy.
    swell period:
      score: 4
      out of: 25
      explanation: Short period: 7s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 33 km/h from 82° (E). Destroying wave quality. Offshore range: 240°-300°.
  adjustments:
    wind history:
      adjustment: -21
      groomed: false
      morning sickness: true
      explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    windswell penalty:
      adjustment: -10
      windswell degraded: true
      explanation: -10 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Boca Grandi. Either swell direction (43°), size (0.6m), or wind (33 km/h from 82°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.6
    height ft: 2.0
    direction degrees: 43
    direction cardinal: NE
    period s: 7
    explanation: 0.6m (2.0ft) swell from 43° (NE) at 7s period
  wind:
    speed kmh: 33
    speed mph: 20.5
    direction degrees: 82
    direction cardinal: E
    explanation: 33 km/h (21 mph) from 82° (E)
  windswell:
    height m: 1.4
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-09
day index: 5
strike score:
  final score: 0
  category: Poor
  category emoji: 💤
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 9
      out of: 25
      explanation: Poor alignment: Swell from 68° is 32° off optimal 100°, barely within workable range 60°-140°.
    swell size:
      score: 11
      out of: 25
      explanation: Marginal size: 1.1m is 0.5m from ideal 1.6m.
    swell period:
      score: 2
      out of: 25
      explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 31 km/h from 86° (E). Destroying wave quality. Offshore range: 240°-300°.
  adjustments:
    wind history:
      adjustment: -21
      groomed: false
      morning sickness: true
      explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    windswell penalty:
      adjustment: -7
      windswell degraded: true
      explanation: -7 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Boca Grandi. Either swell direction (68°), size (1.1m), or wind (31 km/h from 86°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 68
    direction cardinal: ENE
    period s: 6
    explanation: 1.1m (3.6ft) swell from 68° (ENE) at 6s period
  wind:
    speed kmh: 31
    speed mph: 19.3
    direction degrees: 86
    direction cardinal: E
    explanation: 31 km/h (19 mph) from 86° (E)
  windswell:
    height m: 1.3
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-10
day index: 6
strike score:
  final score: 0
  category: Poor
  category emoji: 💤
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 6
      out of: 25
      explanation: Poor alignment: Swell from 54° is 46° off optimal 100°, barely within workable range 60°-140°.
    swell size:
      score: 10
      out of: 25
      explanation: Marginal size: 1.0m is 0.6m from ideal 1.6m.
    swell period:
      score: 2
      out of: 25
      explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 29 km/h from 94° (E). Destroying wave quality. Offshore range: 240°-300°.
  adjustments:
    wind history:
      adjustment: -21
      groomed: false
      morning sickness: true
      explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    windswell penalty:
      adjustment: -7
      windswell degraded: true
      explanation: -7 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Boca Grandi. Either swell direction (54°), size (1.0m), or wind (29 km/h from 94°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 54
    direction cardinal: NE
    period s: 6
    explanation: 1.0m (3.3ft) swell from 54° (NE) at 6s period
  wind:
    speed kmh: 29
    speed mph: 18.0
    direction degrees: 94
    direction cardinal: E
    explanation: 29 km/h (18 mph) from 94° (E)
  windswell:
    height m: 1.1
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-11
day index: 7
strike score:
  final score: 0
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 2
      out of: 25
      explanation: Poor alignment: Swell from 45° is 55° off optimal 100°, barely within workable range 60°-140°.
    swell size:
      score: 5
      out of: 25
      explanation: Too small: 0.7m is below minimum 0.8m. Waves will be weak/mushy.
    swell period:
      score: 4
      out of: 25
      explanation: Short period: 7s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 34 km/h from 89° (E). Destroying wave quality. Offshore range: 240°-300°.
  adjustments:
    wind history:
      adjustment: -21
      groomed: false
      morning sickness: true
      explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    windswell penalty:
      adjustment: -10
      windswell degraded: true
      explanation: -10 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Boca Grandi. Either swell direction (45°), size (0.7m), or wind (34 km/h from 89°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.7
    height ft: 2.3
    direction degrees: 45
    direction cardinal: NE
    period s: 7
    explanation: 0.7m (2.3ft) swell from 45° (NE) at 7s period
  wind:
    speed kmh: 34
    speed mph: 21.1
    direction degrees: 89
    direction cardinal: E
    explanation: 34 km/h (21 mph) from 89° (E)
  windswell:
    height m: 1.4
    period s: 5
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-12
day index: 8
strike score:
  final score: 0
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 4
      out of: 25
      explanation: Poor alignment: Swell from 51° is 49° off optimal 100°, barely within workable range 60°-140°.
    swell size:
      score: 9
      out of: 25
      explanation: Marginal size: 0.9m is 0.7m from ideal 1.6m.
    swell period:
      score: 2
      out of: 25
      explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 30 km/h from 94° (E). Destroying wave quality. Offshore range: 240°-300°.
  adjustments:
    wind history:
      adjustment: -21
      groomed: false
      morning sickness: true
      explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    windswell penalty:
      adjustment: -7
      windswell degraded: true
      explanation: -7 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Boca Grandi. Either swell direction (51°), size (0.9m), or wind (30 km/h from 94°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.9
    height ft: 3.0
    direction degrees: 51
    direction cardinal: NE
    period s: 6
    explanation: 0.9m (3.0ft) swell from 51° (NE) at 6s period
  wind:
    speed kmh: 30
    speed mph: 18.6
    direction degrees: 94
    direction cardinal: E
    explanation: 30 km/h (19 mph) from 94° (E)
  windswell:
    height m: 1.3
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-13
day index: 9
strike score:
  final score: 0
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 4
      out of: 25
      explanation: Poor alignment: Swell from 51° is 49° off optimal 100°, barely within workable range 60°-140°.
    swell size:
      score: 8
      out of: 25
      explanation: Marginal size: 0.8m is 0.8m from ideal 1.6m.
    swell period:
      score: 2
      out of: 25
      explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 32 km/h from 91° (E). Destroying wave quality. Offshore range: 240°-300°.
  adjustments:
    wind history:
      adjustment: -21
      groomed: false
      morning sickness: true
      explanation: -21 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    windswell penalty:
      adjustment: -10
      windswell degraded: true
      explanation: -10 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Boca Grandi. Either swell direction (51°), size (0.8m), or wind (32 km/h from 91°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.8
    height ft: 2.6
    direction degrees: 51
    direction cardinal: NE
    period s: 6
    explanation: 0.8m (2.6ft) swell from 51° (NE) at 6s period
  wind:
    speed kmh: 32
    speed mph: 19.9
    direction degrees: 91
    direction cardinal: E
    explanation: 32 km/h (20 mph) from 91° (E)
  windswell:
    height m: 1.4
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization