Surf Forecast for Supertubos
type: Dataset
description: 10-day surf forecast with Strike Scores for Supertubos, Peniche, Portugal
about: Supertubos
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: 39.36
    longitude: -9.38
  description: Supertubos is Portugal's answer to Pipeline—a savage beachbreak that produces some of the heaviest barrels in Europe. The wave breaks over sand banks shaped by the Nazaré Canyon system, creating hollow, powerful tubes that have earned it a permanent spot on the WSL Championship Tour. Located on the Peniche peninsula, it picks up virtually any Atlantic swell and transforms it into throaty barrels. The takeoff is critical, the lip is thick, and the closeouts are unforgiving. Portuguese Pipeline indeed.
summary:
  best day:
    date: 2026-08-09
    score: 11
    category: Poor
    explanation: Best day in the forecast: 2026-08-09 with a score of 11/100 (Poor)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 3/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-05
  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: 5
        out of: 25
        explanation: Poor alignment: Swell from 318° is 58° off optimal 260°, barely within workable range 225°-315°.
      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: 6
        out of: 25
        explanation: Moderate period: 10s meets minimum 10s but below ideal 16s. Some groundswell energy present.
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 17 km/h from 357° (N). Destroying wave quality. Offshore range: 0°-90°.
    adjustments:
      wind history:
        adjustment: 0
        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 Supertubos. Either swell direction (318°), size (1.1m), or wind (17 km/h from 357°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.1
      height ft: 3.6
      direction degrees: 318
      direction cardinal: NW
      period s: 10
      peak period s: 10.2
      explanation: 1.1m (3.6ft) swell from 318° (NW) at 10.2s period
    wind:
      speed kmh: 17
      speed mph: 10.6
      direction degrees: 357
      direction cardinal: N
      explanation: 17 km/h (11 mph) from 357° (N)
    secondary swell:
      height m: 0.6
      direction degrees: 279
      direction cardinal: W
      period s: 6
    windswell:
      height m: 0.3
      period s: 2
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-06
  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 334° is outside workable range 225°-315°. 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: 2
        out of: 25
        explanation: Short period: 8s is below minimum 10s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 22 km/h from 353° (N). Destroying wave quality. Offshore range: 0°-90°.
    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 Supertubos. Either swell direction (334°), size (1.1m), or wind (22 km/h from 353°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.1
      height ft: 3.6
      direction degrees: 334
      direction cardinal: NNW
      period s: 8
      peak period s: 8.4
      explanation: 1.1m (3.6ft) swell from 334° (NNW) at 8.4s period
    wind:
      speed kmh: 22
      speed mph: 13.7
      direction degrees: 353
      direction cardinal: N
      explanation: 22 km/h (14 mph) from 353° (N)
    secondary swell:
      height m: 0.5
      direction degrees: 306
      direction cardinal: NW
      period s: 6
    windswell:
      height m: 0.7
      period s: 3
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-07
  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 339° is outside workable range 225°-315°. 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: 4
        out of: 25
        explanation: Short period: 9s is below minimum 10s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 5
        out of: 25
        explanation: Onshore/cross-shore: 14 km/h from 343° (NNW). Destroying wave quality. Offshore range: 0°-90°.
    adjustments:
      wind history:
        adjustment: -10
        groomed: false
        morning sickness: true
        explanation: -10 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 Supertubos. Either swell direction (339°), size (1.0m), or wind (14 km/h from 343°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1
      height ft: 3.3
      direction degrees: 339
      direction cardinal: NNW
      period s: 9
      peak period s: 9.3
      explanation: 1.0m (3.3ft) swell from 339° (NNW) at 9.3s period
    wind:
      speed kmh: 14
      speed mph: 8.7
      direction degrees: 343
      direction cardinal: NNW
      explanation: 14 km/h (9 mph) from 343° (NNW)
    secondary swell:
      height m: 0.5
      direction degrees: 322
      direction cardinal: NW
      period s: 5
provider: Strike Mission
date published: 2026-08-05T00:30:49.629Z
temporal coverage: 2026-08-05/2026-08-14
data sources: Open-Meteo Marine API (swell/wave data)
data sources: Open-Meteo Weather API (wind/weather data)

date: 2026-08-08
day index: 3
strike score:
  final score: 2
  category: Poor
  category emoji: 💤
  confidence: 0.92
  confidence explanation: High confidence (2-3 day forecast)
  breakdown:
    swell direction:
      score: 10
      out of: 25
      explanation: Moderate alignment: Swell from 293° is 33° off optimal 260°, workable but not ideal.
    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: 2
      out of: 25
      explanation: Short period: 8s is below minimum 10s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 9
      out of: 25
      explanation: Onshore/cross-shore: 10 km/h from 240° (WSW). Destroying wave quality. Offshore range: 0°-90°.
  adjustments:
    wind history:
      adjustment: -7
      groomed: false
      morning sickness: true
      explanation: -7 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 Supertubos. Either swell direction (293°), size (1.0m), or wind (10 km/h from 240°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 293
    direction cardinal: WNW
    period s: 8
    explanation: 1.0m (3.3ft) swell from 293° (WNW) at 8s period
  wind:
    speed kmh: 10
    speed mph: 6.2
    direction degrees: 240
    direction cardinal: WSW
    explanation: 10 km/h (6 mph) from 240° (WSW)
  secondary swell:
    height m: 0.4
    direction degrees: 336
    direction cardinal: NNW
    period s: 6

date: 2026-08-09
day index: 4
strike score:
  final score: 11
  category: Poor
  category emoji: 💤
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 15
      out of: 25
      explanation: Moderate alignment: Swell from 278° is 18° off optimal 260°, workable but not ideal.
    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: 2
      out of: 25
      explanation: Short period: 7s is below minimum 10s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 11
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 341° (NNW). Destroying wave quality. Offshore range: 0°-90°.
  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 Supertubos. Either swell direction (278°), size (1.0m), or wind (11 km/h from 341°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 278
    direction cardinal: W
    period s: 7
    explanation: 1.0m (3.3ft) swell from 278° (W) at 7s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 341
    direction cardinal: NNW
    explanation: 11 km/h (7 mph) from 341° (NNW)

date: 2026-08-10
day index: 5
strike score:
  final score: 3
  category: Poor
  category emoji: 💤
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 4
      out of: 25
      explanation: Poor alignment: Swell from 320° is 60° off optimal 260°, barely within workable range 225°-315°.
    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: 2
      out of: 25
      explanation: Short period: 7s is below minimum 10s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 7
      out of: 25
      explanation: Onshore/cross-shore: 13 km/h from 336° (NNW). Destroying wave quality. Offshore range: 0°-90°.
  adjustments:
    wind history:
      adjustment: 0
      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 Supertubos. Either swell direction (320°), size (1.6m), or wind (13 km/h from 336°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.6
    height ft: 5.2
    direction degrees: 320
    direction cardinal: NW
    period s: 7
    explanation: 1.6m (5.2ft) swell from 320° (NW) at 7s period
  wind:
    speed kmh: 13
    speed mph: 8.1
    direction degrees: 336
    direction cardinal: NNW
    explanation: 13 km/h (8 mph) from 336° (NNW)
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-11
day index: 6
strike score:
  final score: 8
  category: Poor
  category emoji: 💤
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 1
      out of: 25
      explanation: Poor alignment: Swell from 329° is 69° off optimal 260°, barely within workable range 225°-315°.
    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: 6
      out of: 25
      explanation: Moderate period: 10s meets minimum 10s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 16
      out of: 25
      explanation: Onshore/cross-shore: 9 km/h from 322° (NW). Destroying wave quality. Offshore range: 0°-90°.
  adjustments:
    wind history:
      adjustment: 0
      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 Supertubos. Either swell direction (329°), size (1.4m), or wind (9 km/h from 322°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.4
    height ft: 4.6
    direction degrees: 329
    direction cardinal: NNW
    period s: 10
    explanation: 1.4m (4.6ft) swell from 329° (NNW) at 10s period
  wind:
    speed kmh: 9
    speed mph: 5.6
    direction degrees: 322
    direction cardinal: NW
    explanation: 9 km/h (6 mph) from 322° (NW)
  secondary swell:
    height m: 0.4
    direction degrees: 312
    direction cardinal: NW
    period s: 9
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-12
day index: 7
strike score:
  final score: 10
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 10
      out of: 25
      explanation: Moderate alignment: Swell from 295° is 35° off optimal 260°, workable but not ideal.
    swell size:
      score: 3
      out of: 25
      explanation: Too small: 1.3m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 10s meets minimum 10s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 14 km/h from 352° (N). Destroying wave quality. Offshore range: 0°-90°.
  adjustments:
    wind history:
      adjustment: 0
      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 Supertubos. Either swell direction (295°), size (1.3m), or wind (14 km/h from 352°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.3
    height ft: 4.3
    direction degrees: 295
    direction cardinal: WNW
    period s: 10
    explanation: 1.3m (4.3ft) swell from 295° (WNW) at 10s period
  wind:
    speed kmh: 14
    speed mph: 8.7
    direction degrees: 352
    direction cardinal: N
    explanation: 14 km/h (9 mph) from 352° (N)
  secondary swell:
    height m: 0.6
    direction degrees: 330
    direction cardinal: NNW
    period s: 8

date: 2026-08-13
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: 8
      out of: 25
      explanation: Poor alignment: Swell from 300° is 40° off optimal 260°, barely within workable range 225°-315°.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 1.2m is below minimum 1.8m. Waves will be weak/mushy.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 10s meets minimum 10s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 22 km/h from 356° (N). Destroying wave quality. Offshore range: 0°-90°.
  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 Supertubos. Either swell direction (300°), size (1.2m), or wind (22 km/h from 356°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.2
    height ft: 3.9
    direction degrees: 300
    direction cardinal: WNW
    period s: 10
    explanation: 1.2m (3.9ft) swell from 300° (WNW) at 10s period
  wind:
    speed kmh: 22
    speed mph: 13.7
    direction degrees: 356
    direction cardinal: N
    explanation: 22 km/h (14 mph) from 356° (N)
  secondary swell:
    height m: 0.6
    direction degrees: 312
    direction cardinal: NW
    period s: 9
  windswell:
    height m: 0.6
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-14
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: 14
      out of: 25
      explanation: Moderate alignment: Swell from 282° is 22° off optimal 260°, workable but not ideal.
    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: 4
      out of: 25
      explanation: Short period: 9s is below minimum 10s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 21 km/h from 350° (N). Destroying wave quality. Offshore range: 0°-90°.
  adjustments:
    wind history:
      adjustment: -10
      groomed: false
      morning sickness: true
      explanation: -10 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 Supertubos. Either swell direction (282°), size (0.8m), or wind (21 km/h from 350°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.8
    height ft: 2.6
    direction degrees: 282
    direction cardinal: WNW
    period s: 9
    explanation: 0.8m (2.6ft) swell from 282° (WNW) at 9s period
  wind:
    speed kmh: 21
    speed mph: 13.0
    direction degrees: 350
    direction cardinal: N
    explanation: 21 km/h (13 mph) from 350° (N)

Strike Mission
type: Organization