Surf Forecast for Praa Sands
type: Dataset
description: 10-day surf forecast with Strike Scores for Praa Sands, South Cornwall, UK
about: Praa Sands
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: 50.1
    longitude: -5.3833
  description: Praa Sands is south Cornwall's most popular beach break--a south-facing cove that catches SW groundswell.
summary:
  best day:
    date: 2026-08-07
    score: 11
    category: Poor
    explanation: Best day in the forecast: 2026-08-07 with a score of 11/100 (Poor)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 2/100. 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: 13
        out of: 25
        explanation: Moderate alignment: Swell from 229° is 19° off optimal 210°, workable but not ideal.
      swell size:
        score: 8
        out of: 25
        explanation: Marginal size: 0.9m is 0.8m from ideal 1.7m.
      swell period:
        score: 1
        out of: 25
        explanation: Short period: 6s is below minimum 9s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 0
        out of: 25
        explanation: Onshore/cross-shore: 22 km/h from 215° (SW). Destroying wave quality. Offshore range: 350°-60°.
    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 Praa Sands. Either swell direction (229°), size (0.9m), or wind (22 km/h from 215°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.9
      height ft: 3.0
      direction degrees: 229
      direction cardinal: SW
      period s: 6
      peak period s: 6.1
      explanation: 0.9m (3.0ft) swell from 229° (SW) at 6.1s period
    wind:
      speed kmh: 22
      speed mph: 13.7
      direction degrees: 215
      direction cardinal: SW
      explanation: 22 km/h (14 mph) from 215° (SW)
    windswell:
      height m: 0.7
      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: 5
        out of: 25
        explanation: Poor alignment: Swell from 258° is 48° off optimal 210°, barely within workable range 180°-250°.
      swell size:
        score: 9
        out of: 25
        explanation: Marginal size: 1.0m is 0.7m from ideal 1.7m.
      swell period:
        score: 11
        out of: 25
        explanation: Moderate period: 11s meets minimum 9s but below ideal 13s. Some groundswell energy present.
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 22 km/h from 292° (WNW). Destroying wave quality. Offshore range: 350°-60°.
    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: -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 Praa Sands. Either swell direction (258°), size (1.0m), or wind (22 km/h from 292°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1
      height ft: 3.3
      direction degrees: 258
      direction cardinal: WSW
      period s: 11
      peak period s: 10.6
      explanation: 1.0m (3.3ft) swell from 258° (WSW) at 10.6s period
    wind:
      speed kmh: 22
      speed mph: 13.7
      direction degrees: 292
      direction cardinal: WNW
      explanation: 22 km/h (14 mph) from 292° (WNW)
    windswell:
      height m: 0.6
      period s: 3
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-06
  day index: 2
  strike score:
    final score: 4
    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 270° is outside workable range 180°-250°. Wrong swell direction for this spot.
      swell size:
        score: 3
        out of: 25
        explanation: Too small: 0.7m is below minimum 0.9m. Waves will be weak/mushy.
      swell period:
        score: 25
        out of: 25
        explanation: Perfect period: 14s is at or above ideal 13s. Long-period groundswell with maximum power.
      wind:
        score: 7
        out of: 25
        explanation: Onshore/cross-shore: 13 km/h from 301° (WNW). Destroying wave quality. Offshore range: 350°-60°.
    adjustments:
      wind history:
        adjustment: -17
        groomed: false
        morning sickness: true
        explanation: -17 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 Praa Sands. Either swell direction (270°), size (0.7m), or wind (13 km/h from 301°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.7
      height ft: 2.3
      direction degrees: 270
      direction cardinal: W
      period s: 14
      peak period s: 13.5
      explanation: 0.7m (2.3ft) swell from 270° (W) at 13.5s period
    wind:
      speed kmh: 13
      speed mph: 8.1
      direction degrees: 301
      direction cardinal: WNW
      explanation: 13 km/h (8 mph) from 301° (WNW)
forecasts:
  date: 2026-08-07
  day index: 3
  strike score:
    final score: 11
    category: Poor
    category emoji: 💤
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 0
        out of: 25
        explanation: No alignment: Swell from 276° is outside workable range 180°-250°. Wrong swell direction for this spot.
    summary: Poor conditions at Praa Sands. Either swell direction (276°), size (0.3m), or wind (9 km/h from 180°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-05T00:35:35.196Z
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: 1
out of: 25
explanation: Too small: 0.3m is below minimum 0.9m. Waves will be weak/mushy.

score: 23
out of: 25
explanation: Good period: 12s is 95% of ideal 13s. Clean, powerful groundswell.

score: 11
out of: 25
explanation: Onshore/cross-shore: 9 km/h from 180° (S). Destroying wave quality. Offshore range: 350°-60°.

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.

swell:
  height m: 0.3
  height ft: 1.0
  direction degrees: 276
  direction cardinal: W
  period s: 12
  peak period s: 12.3
  explanation: 0.3m (1.0ft) swell from 276° (W) at 12.3s period
wind:
  speed kmh: 9
  speed mph: 5.6
  direction degrees: 180
  direction cardinal: S
  explanation: 9 km/h (6 mph) from 180° (S)

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 269° is outside workable range 180°-250°. Wrong swell direction for this spot.
    swell size:
      score: 1
      out of: 25
      explanation: Too small: 0.3m is below minimum 0.9m. Waves will be weak/mushy.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 10s meets minimum 9s but below ideal 13s. Some groundswell energy present.
    wind:
      score: 4
      out of: 25
      explanation: Onshore/cross-shore: 13 km/h from 143° (SE). Destroying wave quality. Offshore range: 350°-60°.
  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 Praa Sands. Either swell direction (269°), size (0.3m), or wind (13 km/h from 143°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.3
    height ft: 1.0
    direction degrees: 269
    direction cardinal: W
    period s: 10
    explanation: 0.3m (1.0ft) swell from 269° (W) at 10s period
  wind:
    speed kmh: 13
    speed mph: 8.1
    direction degrees: 143
    direction cardinal: SE
    explanation: 13 km/h (8 mph) from 143° (SE)

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: 2
      out of: 25
      explanation: Poor alignment: Swell from 264° is 54° off optimal 210°, barely within workable range 180°-250°.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 0.5m is below minimum 0.9m. Waves will be weak/mushy.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 9s meets minimum 9s but below ideal 13s. Some groundswell energy present.
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 24 km/h from 289° (WNW). Destroying wave quality. Offshore range: 350°-60°.
  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 Praa Sands. Either swell direction (264°), size (0.5m), or wind (24 km/h from 289°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.5
    height ft: 1.6
    direction degrees: 264
    direction cardinal: W
    period s: 9
    explanation: 0.5m (1.6ft) swell from 264° (W) at 9s period
  wind:
    speed kmh: 24
    speed mph: 14.9
    direction degrees: 289
    direction cardinal: WNW
    explanation: 24 km/h (15 mph) from 289° (WNW)
  windswell:
    height m: 0.3
    period s: 2
    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: 5
      out of: 25
      explanation: Poor alignment: Swell from 258° is 48° off optimal 210°, barely within workable range 180°-250°.
    swell size:
      score: 8
      out of: 25
      explanation: Marginal size: 0.9m is 0.8m from ideal 1.7m.
    swell period:
      score: 2
      out of: 25
      explanation: Short period: 7s is below minimum 9s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 298° (WNW). Destroying wave quality. Offshore range: 350°-60°.
  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 Praa Sands. Either swell direction (258°), size (0.9m), or wind (17 km/h from 298°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.9
    height ft: 3.0
    direction degrees: 258
    direction cardinal: WSW
    period s: 7
    explanation: 0.9m (3.0ft) swell from 258° (WSW) at 7s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 298
    direction cardinal: WNW
    explanation: 17 km/h (11 mph) from 298° (WNW)

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: 3
      out of: 25
      explanation: Poor alignment: Swell from 261° is 51° off optimal 210°, barely within workable range 180°-250°.
    swell size:
      score: 1
      out of: 25
      explanation: Too small: 0.4m is below minimum 0.9m. Waves will be weak/mushy.
    swell period:
      score: 4
      out of: 25
      explanation: Short period: 8s is below minimum 9s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 15 km/h from 131° (SE). Destroying wave quality. Offshore range: 350°-60°.
  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: -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 Praa Sands. Either swell direction (261°), size (0.4m), or wind (15 km/h from 131°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.4
    height ft: 1.3
    direction degrees: 261
    direction cardinal: W
    period s: 8
    explanation: 0.4m (1.3ft) swell from 261° (W) at 8s period
  wind:
    speed kmh: 15
    speed mph: 9.3
    direction degrees: 131
    direction cardinal: SE
    explanation: 15 km/h (9 mph) from 131° (SE)

date: 2026-08-12
day index: 8
strike score:
  final score: 1
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 6
      out of: 25
      explanation: Poor alignment: Swell from 251° is 41° off optimal 210°, barely within workable range 180°-250°.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 0.5m is below minimum 0.9m. Waves will be weak/mushy.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 11s meets minimum 9s but below ideal 13s. Some groundswell energy present.
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 225° (SW). Destroying wave quality. Offshore range: 350°-60°.
  adjustments:
    wind history:
      adjustment: -4
      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 Praa Sands. Either swell direction (251°), size (0.5m), or wind (17 km/h from 225°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.5
    height ft: 1.6
    direction degrees: 251
    direction cardinal: WSW
    period s: 11
    explanation: 0.5m (1.6ft) swell from 251° (WSW) at 11s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 225
    direction cardinal: SW
    explanation: 17 km/h (11 mph) from 225° (SW)
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-13
day index: 9
strike score:
  final score: 1
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 7
      out of: 25
      explanation: Poor alignment: Swell from 250° is 40° off optimal 210°, barely within workable range 180°-250°.
    swell size:
      score: 5
      out of: 25
      explanation: Too small: 0.8m is below minimum 0.9m. Waves will be weak/mushy.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 9s meets minimum 9s but below ideal 13s. Some groundswell energy present.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 16 km/h from 261° (W). Destroying wave quality. Offshore range: 350°-60°.
  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 Praa Sands. Either swell direction (250°), size (0.8m), or wind (16 km/h from 261°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.8
    height ft: 2.6
    direction degrees: 250
    direction cardinal: WSW
    period s: 9
    explanation: 0.8m (2.6ft) swell from 250° (WSW) at 9s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 261
    direction cardinal: W
    explanation: 16 km/h (10 mph) from 261° (W)
  secondary swell:
    height m: 0.4
    direction degrees: 261
    direction cardinal: W
    period s: 8

Strike Mission
type: Organization