Surf Forecast for Bantham
type: Dataset
description: 10-day surf forecast with Strike Scores for Bantham, South Devon, UK
about: Bantham
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: 50.28
    longitude: -3.8667
  description: Bantham sits at the mouth of the River Avon in South Devon, where the river creates sandbars that produce surprisingly powerful waves.
summary:
  best day:
    date: 2026-08-06
    score: 20
    category: Poor
    explanation: Best day in the forecast: 2026-08-06 with a score of 20/100 (Poor)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 5/100. 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: 5
        out of: 25
        explanation: Too small: 0.7m is below minimum 0.8m. Waves will be weak/mushy.
      swell period:
        score: 1
        out of: 25
        explanation: Short period: 5s is below minimum 8s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 20 km/h from 214° (SW). Destroying wave quality. Offshore range: 310°-20°.
    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 Bantham. Either swell direction (229°), size (0.7m), or wind (20 km/h from 214°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.7
      height ft: 2.3
      direction degrees: 229
      direction cardinal: SW
      period s: 5
      peak period s: 5.2
      explanation: 0.7m (2.3ft) swell from 229° (SW) at 5.2s period
    wind:
      speed kmh: 20
      speed mph: 12.4
      direction degrees: 214
      direction cardinal: SW
      explanation: 20 km/h (12 mph) from 214° (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: 7
    category: Poor
    category emoji: 💤
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 15
        out of: 25
        explanation: Moderate alignment: Swell from 225° is 15° off optimal 210°, workable but not ideal.
      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: 7s is below minimum 8s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 27 km/h from 272° (W). Destroying wave quality. Offshore range: 310°-20°.
    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 Bantham. Either swell direction (225°), size (1.0m), or wind (27 km/h from 272°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1
      height ft: 3.3
      direction degrees: 225
      direction cardinal: SW
      period s: 7
      peak period s: 6.7
      explanation: 1.0m (3.3ft) swell from 225° (SW) at 6.7s period
    wind:
      speed kmh: 27
      speed mph: 16.8
      direction degrees: 272
      direction cardinal: W
      explanation: 27 km/h (17 mph) from 272° (W)
    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: 20
    category: Poor
    category emoji: 💤
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 12
        out of: 25
        explanation: Moderate alignment: Swell from 232° is 22° off optimal 210°, workable but not ideal.
      swell size:
        score: 2
        out of: 25
        explanation: Too small: 0.5m is below minimum 0.8m. Waves will be weak/mushy.
      swell period:
        score: 25
        out of: 25
        explanation: Perfect period: 14s is at or above ideal 12s. Long-period groundswell with maximum power.
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 16 km/h from 288° (WNW). Destroying wave quality. Offshore range: 310°-20°.
    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 Bantham. Either swell direction (232°), size (0.5m), or wind (16 km/h from 288°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.5
      height ft: 1.6
      direction degrees: 232
      direction cardinal: SW
      period s: 14
      peak period s: 13.5
      explanation: 0.5m (1.6ft) swell from 232° (SW) at 13.5s period
    wind:
      speed kmh: 16
      speed mph: 9.9
      direction degrees: 288
      direction cardinal: WNW
      explanation: 16 km/h (10 mph) from 288° (WNW)
forecasts:
  date: 2026-08-07
  day index: 3
  strike score:
    final score: 15
    category: Poor
    category emoji: 💤
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 12
        out of: 25
        explanation: Moderate alignment: Swell from 233° is 23° off optimal 210°, workable but not ideal.
    summary: Poor conditions at Bantham. Either swell direction (233°), size (0.2m), or wind (9 km/h from 210°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-05T03:12:04.396Z
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: 0.2m is below minimum 0.8m. Waves will be weak/mushy.

score: 25
out of: 25
explanation: Perfect period: 12s is at or above ideal 12s. Long-period groundswell with maximum power.

score: 11
out of: 25
explanation: Onshore/cross-shore: 9 km/h from 210° (SSW). Destroying wave quality. Offshore range: 310°-20°.

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.

swell:
  height m: 0.2
  height ft: 0.7
  direction degrees: 233
  direction cardinal: SW
  period s: 12
  peak period s: 12.3
  explanation: 0.2m (0.7ft) swell from 233° (SW) at 12.3s period
wind:
  speed kmh: 9
  speed mph: 5.6
  direction degrees: 210
  direction cardinal: SSW
  explanation: 9 km/h (6 mph) from 210° (SSW)

date: 2026-08-08
day index: 4
strike score:
  final score: 3
  category: Poor
  category emoji: 💤
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 11
      out of: 25
      explanation: Moderate alignment: Swell from 235° is 25° off optimal 210°, workable but not ideal.
    swell size:
      score: 0
      out of: 25
      explanation: Too small: 0.1m 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: 7
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 128° (SE). Destroying wave quality. Offshore range: 310°-20°.
  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 Bantham. Either swell direction (235°), size (0.1m), or wind (11 km/h from 128°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.1
    height ft: 0.3
    direction degrees: 235
    direction cardinal: SW
    period s: 7
    explanation: 0.1m (0.3ft) swell from 235° (SW) at 7s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 128
    direction cardinal: SE
    explanation: 11 km/h (7 mph) from 128° (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: 12
      out of: 25
      explanation: Moderate alignment: Swell from 233° is 23° off optimal 210°, workable but not ideal.
    swell size:
      score: 1
      out of: 25
      explanation: Too small: 0.3m is below minimum 0.8m. Waves will be weak/mushy.
    swell period:
      score: 2
      out of: 25
      explanation: Short period: 6s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 23 km/h from 272° (W). Destroying wave quality. Offshore range: 310°-20°.
  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 Bantham. Either swell direction (233°), size (0.3m), or wind (23 km/h from 272°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.3
    height ft: 1.0
    direction degrees: 233
    direction cardinal: SW
    period s: 6
    explanation: 0.3m (1.0ft) swell from 233° (SW) at 6s period
  wind:
    speed kmh: 23
    speed mph: 14.3
    direction degrees: 272
    direction cardinal: W
    explanation: 23 km/h (14 mph) from 272° (W)
  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: 11
      out of: 25
      explanation: Moderate alignment: Swell from 236° is 26° off optimal 210°, workable but not ideal.
    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: 1
      out of: 25
      explanation: Short period: 5s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 18 km/h from 280° (W). Destroying wave quality. Offshore range: 310°-20°.
  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 Bantham. Either swell direction (236°), size (0.7m), or wind (18 km/h from 280°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.7
    height ft: 2.3
    direction degrees: 236
    direction cardinal: SW
    period s: 5
    explanation: 0.7m (2.3ft) swell from 236° (SW) at 5s period
  wind:
    speed kmh: 18
    speed mph: 11.2
    direction degrees: 280
    direction cardinal: W
    explanation: 18 km/h (11 mph) from 280° (W)
  windswell:
    height m: 0.3
    period s: 2
    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: 12
      out of: 25
      explanation: Moderate alignment: Swell from 231° is 21° off optimal 210°, workable but not ideal.
    swell size:
      score: 1
      out of: 25
      explanation: Too small: 0.2m is below minimum 0.8m. Waves will be weak/mushy.
    swell period:
      score: 1
      out of: 25
      explanation: Short period: 5s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 7
      out of: 25
      explanation: Onshore/cross-shore: 12 km/h from 99° (E). Destroying wave quality. Offshore range: 310°-20°.
  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 Bantham. Either swell direction (231°), size (0.2m), or wind (12 km/h from 99°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.2
    height ft: 0.7
    direction degrees: 231
    direction cardinal: SW
    period s: 5
    explanation: 0.2m (0.7ft) swell from 231° (SW) at 5s period
  wind:
    speed kmh: 12
    speed mph: 7.5
    direction degrees: 99
    direction cardinal: E
    explanation: 12 km/h (7 mph) from 99° (E)

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: 7
      out of: 25
      explanation: Poor alignment: Swell from 247° is 37° off optimal 210°, barely within workable range 190°-250°.
    swell size:
      score: 1
      out of: 25
      explanation: Too small: 0.3m is below minimum 0.8m. Waves will be weak/mushy.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 8s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 14 km/h from 262° (W). Destroying wave quality. Offshore range: 310°-20°.
  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 Bantham. Either swell direction (247°), size (0.3m), or wind (14 km/h from 262°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.3
    height ft: 1.0
    direction degrees: 247
    direction cardinal: WSW
    period s: 8
    explanation: 0.3m (1.0ft) swell from 247° (WSW) at 8s period
  wind:
    speed kmh: 14
    speed mph: 8.7
    direction degrees: 262
    direction cardinal: W
    explanation: 14 km/h (9 mph) from 262° (W)

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: 12
      out of: 25
      explanation: Moderate alignment: Swell from 232° is 22° off optimal 210°, workable but not ideal.
    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: 1
      out of: 25
      explanation: Short period: 5s is below minimum 8s. Windswell-dominated (choppy, weak waves).
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 249° (WSW). Destroying wave quality. Offshore range: 310°-20°.
  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 Bantham. Either swell direction (232°), size (0.7m), or wind (17 km/h from 249°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.7
    height ft: 2.3
    direction degrees: 232
    direction cardinal: SW
    period s: 5
    explanation: 0.7m (2.3ft) swell from 232° (SW) at 5s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 249
    direction cardinal: WSW
    explanation: 17 km/h (11 mph) from 249° (WSW)
  windswell:
    height m: 0.4
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization