Surf Forecast for Pipeline
type: Dataset
description: 10-day surf forecast with Strike Scores for Pipeline, North Shore, Oahu, USA
about: Pipeline
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: 21.665
    longitude: -158.053
  description: Pipeline is the proving ground of professional surfing—a shallow, left-breaking barrel that has defined generations of surfers. The wave breaks just 75 yards from the beach over a dangerously shallow lava reef, producing thick, hollow tubes that are as punishing as they are perfect. When NW swells hit during winter, Pipe delivers some of the heaviest barrels on Earth.
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: 0
        out of: 25
        explanation: No alignment: Swell from 69° is outside workable range 295°-340°. Wrong swell direction for this spot.
      swell size:
        score: 5
        out of: 25
        explanation: Too small: 1.6m is below minimum 1.8m. Waves will be weak/mushy.
      swell period:
        score: 1
        out of: 25
        explanation: Short period: 8s is below minimum 12s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 10
        out of: 25
        explanation: Onshore/cross-shore: 12 km/h from 75° (ENE). Destroying wave quality. Offshore range: 90°-160°.
    adjustments:
      wind history:
        adjustment: -11
        groomed: false
        morning sickness: true
        explanation: -11 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
      windswell penalty:
        adjustment: 0
        windswell degraded: false
        explanation: Groundswell-dominant conditions (clean, long-period waves).
      secondary swell bonus:
        adjustment: 0
        explanation: No secondary swell bonus.
    summary: Poor conditions at Pipeline. Either swell direction (69°), size (1.6m), or wind (12 km/h from 75°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.6
      height ft: 5.2
      direction degrees: 69
      direction cardinal: ENE
      period s: 8
      explanation: 1.6m (5.2ft) swell from 69° (ENE) at 8s period
    wind:
      speed kmh: 12
      speed mph: 7.5
      direction degrees: 75
      direction cardinal: ENE
      explanation: 12 km/h (7 mph) from 75° (ENE)
    windswell:
      height m: 0.4
      period s: 3
      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: 0
        out of: 25
        explanation: No alignment: Swell from 67° is outside workable range 295°-340°. Wrong swell direction for this spot.
      swell size:
        score: 3
        out of: 25
        explanation: Too small: 1.4m is below minimum 1.8m. Waves will be weak/mushy.
      swell period:
        score: 1
        out of: 25
        explanation: Short period: 8s is below minimum 12s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 5
        out of: 25
        explanation: Onshore/cross-shore: 16 km/h from 77° (ENE). Destroying wave quality. Offshore range: 90°-160°.
    adjustments:
      wind history:
        adjustment: -4
        groomed: false
        morning sickness: false
        explanation: No significant wind history adjustment.
      windswell penalty:
        adjustment: 0
        windswell degraded: false
        explanation: Groundswell-dominant conditions (clean, long-period waves).
      secondary swell bonus:
        adjustment: 0
        explanation: No secondary swell bonus.
    summary: Poor conditions at Pipeline. Either swell direction (67°), size (1.4m), or wind (16 km/h from 77°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.4
      height ft: 4.6
      direction degrees: 67
      direction cardinal: ENE
      period s: 8
      explanation: 1.4m (4.6ft) swell from 67° (ENE) at 8s period
    wind:
      speed kmh: 16
      speed mph: 9.9
      direction degrees: 77
      direction cardinal: ENE
      explanation: 16 km/h (10 mph) from 77° (ENE)
    windswell:
      height m: 0.5
      period s: 3
      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: 0
        out of: 25
        explanation: No alignment: Swell from 65° is outside workable range 295°-340°. Wrong swell direction for this spot.
      swell size:
        score: 2
        out of: 25
        explanation: Too small: 0.9m is below minimum 1.8m. Waves will be weak/mushy.
      swell period:
        score: 1
        out of: 25
        explanation: Short period: 8s is below minimum 12s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 5
        out of: 25
        explanation: Onshore/cross-shore: 16 km/h from 75° (ENE). Destroying wave quality. Offshore range: 90°-160°.
    adjustments:
      wind history:
        adjustment: 0
        groomed: false
        morning sickness: false
        explanation: No significant wind history adjustment.
      windswell penalty:
        adjustment: -3
        windswell degraded: false
        explanation: Groundswell-dominant conditions (clean, long-period waves).
      secondary swell bonus:
        adjustment: 0
        explanation: No secondary swell bonus.
    summary: Poor conditions at Pipeline. Either swell direction (65°), size (0.9m), or wind (16 km/h from 75°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.9
      height ft: 3.0
      direction degrees: 65
      direction cardinal: ENE
      period s: 8
      explanation: 0.9m (3.0ft) swell from 65° (ENE) at 8s period
    wind:
      speed kmh: 16
      speed mph: 9.9
      direction degrees: 75
      direction cardinal: ENE
      explanation: 16 km/h (10 mph) from 75° (ENE)
    secondary swell:
      height m: 0.4
      direction degrees: 340
      direction cardinal: NNW
      period s: 7
    windswell:
      height m: 0.5
      period s: 3
      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)
    summary: Poor conditions at Pipeline. Either swell direction (65°), size (0.8m), or wind (17 km/h from 78°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-05T03:15:57.455Z
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)

swell direction:
  score: 0
  out of: 25
  explanation: No alignment: Swell from 65° is outside workable range 295°-340°. Wrong swell direction for this spot.
swell size:
  score: 1
  out of: 25
  explanation: Too small: 0.8m is below minimum 1.8m. Waves will be weak/mushy.
swell period:
  score: 0
  out of: 25
  explanation: Short period: 6s is below minimum 12s. Windswell-dominated (choppy, weak waves).
wind:
  score: 5
  out of: 25
  explanation: Onshore/cross-shore: 17 km/h from 78° (ENE). Destroying wave quality. Offshore range: 90°-160°.

wind history:
  adjustment: 0
  groomed: false
  morning sickness: false
  explanation: No significant wind history adjustment.
windswell penalty:
  adjustment: -5
  windswell degraded: true
  explanation: -5 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: 65
  direction cardinal: ENE
  period s: 6
  explanation: 0.8m (2.6ft) swell from 65° (ENE) at 6s period
wind:
  speed kmh: 17
  speed mph: 10.6
  direction degrees: 78
  direction cardinal: ENE
  explanation: 17 km/h (11 mph) from 78° (ENE)
secondary swell:
  height m: 0.4
  direction degrees: 55
  direction cardinal: NE
  period s: 9
windswell:
  height m: 0.6
  period s: 3
  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: 0
      out of: 25
      explanation: No alignment: Swell from 89° is outside workable range 295°-340°. Wrong swell direction for this spot.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 0.9m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 1
      out of: 25
      explanation: Short period: 7s is below minimum 12s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 19 km/h from 77° (ENE). Destroying wave quality. Offshore range: 90°-160°.
  adjustments:
    wind history:
      adjustment: 0
      groomed: false
      morning sickness: false
      explanation: No significant wind history adjustment.
    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 Pipeline. Either swell direction (89°), size (0.9m), or wind (19 km/h from 77°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.9
    height ft: 3.0
    direction degrees: 89
    direction cardinal: E
    period s: 7
    explanation: 0.9m (3.0ft) swell from 89° (E) at 7s period
  wind:
    speed kmh: 19
    speed mph: 11.8
    direction degrees: 77
    direction cardinal: ENE
    explanation: 19 km/h (12 mph) from 77° (ENE)
  secondary swell:
    height m: 0.4
    direction degrees: 55
    direction cardinal: NE
    period s: 7
  windswell:
    height m: 1
    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: 0
      out of: 25
      explanation: No alignment: Swell from 71° is outside workable range 295°-340°. Wrong swell direction for this spot.
    swell size:
      score: 3
      out of: 25
      explanation: Too small: 1.5m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 1
      out of: 25
      explanation: Short period: 7s is below minimum 12s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 20 km/h from 72° (ENE). Destroying wave quality. Offshore range: 90°-160°.
  adjustments:
    wind history:
      adjustment: 0
      groomed: false
      morning sickness: false
      explanation: No significant wind history adjustment.
    windswell penalty:
      adjustment: -3
      windswell degraded: false
      explanation: Groundswell-dominant conditions (clean, long-period waves).
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Pipeline. Either swell direction (71°), size (1.5m), or wind (20 km/h from 72°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.5
    height ft: 4.9
    direction degrees: 71
    direction cardinal: ENE
    period s: 7
    explanation: 1.5m (4.9ft) swell from 71° (ENE) at 7s period
  wind:
    speed kmh: 20
    speed mph: 12.4
    direction degrees: 72
    direction cardinal: ENE
    explanation: 20 km/h (12 mph) from 72° (ENE)
  windswell:
    height m: 1
    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: 0
      out of: 25
      explanation: No alignment: Swell from 75° is outside workable range 295°-340°. Wrong swell direction for this spot.
    swell size:
      score: 3
      out of: 25
      explanation: Too small: 1.5m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 0
      out of: 25
      explanation: Short period: 6s is below minimum 12s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 75° (ENE). Destroying wave quality. Offshore range: 90°-160°.
  adjustments:
    wind history:
      adjustment: 0
      groomed: false
      morning sickness: false
      explanation: No significant wind history adjustment.
    windswell penalty:
      adjustment: -3
      windswell degraded: false
      explanation: Groundswell-dominant conditions (clean, long-period waves).
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Pipeline. Either swell direction (75°), size (1.5m), or wind (17 km/h from 75°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.5
    height ft: 4.9
    direction degrees: 75
    direction cardinal: ENE
    period s: 6
    explanation: 1.5m (4.9ft) swell from 75° (ENE) at 6s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 75
    direction cardinal: ENE
    explanation: 17 km/h (11 mph) from 75° (ENE)
  windswell:
    height m: 0.7
    period s: 3
    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: 0
      out of: 25
      explanation: No alignment: Swell from 78° is outside workable range 295°-340°. Wrong swell direction for this spot.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 0.9m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 0
      out of: 25
      explanation: Short period: 6s is below minimum 12s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 18 km/h from 77° (ENE). Destroying wave quality. Offshore range: 90°-160°.
  adjustments:
    wind history:
      adjustment: 0
      groomed: false
      morning sickness: false
      explanation: No significant wind history adjustment.
    windswell penalty:
      adjustment: -5
      windswell degraded: true
      explanation: -5 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Pipeline. Either swell direction (78°), size (0.9m), or wind (18 km/h from 77°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.9
    height ft: 3.0
    direction degrees: 78
    direction cardinal: ENE
    period s: 6
    explanation: 0.9m (3.0ft) swell from 78° (ENE) at 6s period
  wind:
    speed kmh: 18
    speed mph: 11.2
    direction degrees: 77
    direction cardinal: ENE
    explanation: 18 km/h (11 mph) from 77° (ENE)
  secondary swell:
    height m: 0.4
    direction degrees: 87
    direction cardinal: E
    period s: 7
  windswell:
    height m: 0.8
    period s: 3
    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: 0
      out of: 25
      explanation: No alignment: Swell from 81° is outside workable range 295°-340°. Wrong swell direction for this spot.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 1.0m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 0
      out of: 25
      explanation: Short period: 6s is below minimum 12s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 16 km/h from 73° (ENE). Destroying wave quality. Offshore range: 90°-160°.
  adjustments:
    wind history:
      adjustment: 0
      groomed: false
      morning sickness: false
      explanation: No significant wind history adjustment.
    windswell penalty:
      adjustment: -3
      windswell degraded: false
      explanation: Groundswell-dominant conditions (clean, long-period waves).
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Pipeline. Either swell direction (81°), size (1.0m), or wind (16 km/h from 73°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 81
    direction cardinal: E
    period s: 6
    explanation: 1.0m (3.3ft) swell from 81° (E) at 6s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 73
    direction cardinal: ENE
    explanation: 16 km/h (10 mph) from 73° (ENE)
  windswell:
    height m: 0.7
    period s: 3
    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: 0
      out of: 25
      explanation: No alignment: Swell from 80° is outside workable range 295°-340°. Wrong swell direction for this spot.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 1.1m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 0
      out of: 25
      explanation: Short period: 6s is below minimum 12s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 19 km/h from 76° (ENE). Destroying wave quality. Offshore range: 90°-160°.
  adjustments:
    wind history:
      adjustment: 0
      groomed: false
      morning sickness: false
      explanation: No significant wind history adjustment.
    windswell penalty:
      adjustment: -3
      windswell degraded: false
      explanation: Groundswell-dominant conditions (clean, long-period waves).
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Pipeline. Either swell direction (80°), size (1.1m), or wind (19 km/h from 76°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 80
    direction cardinal: E
    period s: 6
    explanation: 1.1m (3.6ft) swell from 80° (E) at 6s period
  wind:
    speed kmh: 19
    speed mph: 11.8
    direction degrees: 76
    direction cardinal: ENE
    explanation: 19 km/h (12 mph) from 76° (ENE)
  windswell:
    height m: 0.7
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization