Surf Forecast for Sennen Cove
type: Dataset
description: 10-day surf forecast with Strike Scores for Sennen Cove, West Cornwall, UK
about: Sennen Cove
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: 50.0697
    longitude: -5.7
  description: Sennen Cove sits near the very tip of Cornwall at Land's End, wide open to whatever the Atlantic sends its way.
summary:
  best day:
    date: 2026-08-12
    score: 16
    category: Poor
    explanation: Best day in the forecast: 2026-08-12 with a score of 16/100 (Poor)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 8/100. 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: 3
        out of: 25
        explanation: Poor alignment: Swell from 229° is 51° off optimal 280°, barely within workable range 250°-315°.
      swell size:
        score: 2
        out of: 25
        explanation: Too small: 0.8m is below minimum 1.2m. 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: 0
        out of: 25
        explanation: Onshore/cross-shore: 21 km/h from 221° (SW). Destroying wave quality. Offshore range: 45°-110°.
    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 Sennen Cove. Either swell direction (229°), size (0.8m), or wind (21 km/h from 221°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.8
      height ft: 2.6
      direction degrees: 229
      direction cardinal: SW
      period s: 6
      peak period s: 5.9
      explanation: 0.8m (2.6ft) swell from 229° (SW) at 5.9s period
    wind:
      speed kmh: 21
      speed mph: 13.0
      direction degrees: 221
      direction cardinal: SW
      explanation: 21 km/h (13 mph) from 221° (SW)
    windswell:
      height m: 1
      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: 22
        out of: 25
        explanation: Good alignment: Swell from 276° is 4° off optimal 280°, still within prime range.
      swell size:
        score: 8
        out of: 25
        explanation: Marginal size: 1.2m is 0.9m from ideal 2.1m.
      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: 26 km/h from 298° (WNW). Destroying wave quality. Offshore range: 45°-110°.
    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: -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 Sennen Cove. Either swell direction (276°), size (1.2m), or wind (26 km/h from 298°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.2
      height ft: 3.9
      direction degrees: 276
      direction cardinal: W
      period s: 7
      peak period s: 6.9
      explanation: 1.2m (3.9ft) swell from 276° (W) at 6.9s period
    wind:
      speed kmh: 26
      speed mph: 16.2
      direction degrees: 298
      direction cardinal: WNW
      explanation: 26 km/h (16 mph) from 298° (WNW)
    secondary swell:
      height m: 0.4
      direction degrees: 242
      direction cardinal: WSW
      period s: 8
    windswell:
      height m: 0.9
      period s: 4
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-06
  day index: 2
  strike score:
    final score: 10
    category: Poor
    category emoji: 💤
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 20
        out of: 25
        explanation: Good alignment: Swell from 286° is 6° off optimal 280°, still within prime range.
      swell size:
        score: 3
        out of: 25
        explanation: Too small: 1.0m is below minimum 1.2m. Waves will be weak/mushy.
      swell period:
        score: 4
        out of: 25
        explanation: Short period: 8s is below minimum 8s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 8
        out of: 25
        explanation: Onshore/cross-shore: 11 km/h from 299° (WNW). Destroying wave quality. Offshore range: 45°-110°.
    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 Sennen Cove. Either swell direction (286°), size (1.0m), or wind (11 km/h from 299°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1
      height ft: 3.3
      direction degrees: 286
      direction cardinal: WNW
      period s: 8
      peak period s: 7.6
      explanation: 1.0m (3.3ft) swell from 286° (WNW) at 7.6s period
    wind:
      speed kmh: 11
      speed mph: 6.8
      direction degrees: 299
      direction cardinal: WNW
      explanation: 11 km/h (7 mph) from 299° (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)
    summary: Poor conditions at Sennen Cove. Either swell direction (283°), size (0.4m), or wind (10 km/h from 199°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-05T03:11:49.885Z
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: 23
  out of: 25
  explanation: Good alignment: Swell from 283° is 3° off optimal 280°, still within prime range.
swell size:
  score: 1
  out of: 25
  explanation: Too small: 0.4m is below minimum 1.2m. Waves will be weak/mushy.
swell period:
  score: 11
  out of: 25
  explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
wind:
  score: 10
  out of: 25
  explanation: Onshore/cross-shore: 10 km/h from 199° (SSW). Destroying wave quality. Offshore range: 45°-110°.

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: 0.4
  height ft: 1.3
  direction degrees: 283
  direction cardinal: WNW
  period s: 10
  peak period s: 9.5
  explanation: 0.4m (1.3ft) swell from 283° (WNW) at 9.5s period
wind:
  speed kmh: 10
  speed mph: 6.2
  direction degrees: 199
  direction cardinal: SSW
  explanation: 10 km/h (6 mph) from 199° (SSW)

date: 2026-08-08
day index: 4
strike score:
  final score: 15
  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 296° is 16° off optimal 280°, workable but not ideal.
    swell size:
      score: 1
      out of: 25
      explanation: Too small: 0.4m is below minimum 1.2m. Waves will be weak/mushy.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 13 km/h from 168° (SSE). Destroying wave quality. Offshore range: 45°-110°.
  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 Sennen Cove. Either swell direction (296°), size (0.4m), or wind (13 km/h from 168°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.4
    height ft: 1.3
    direction degrees: 296
    direction cardinal: WNW
    period s: 10
    explanation: 0.4m (1.3ft) swell from 296° (WNW) at 10s period
  wind:
    speed kmh: 13
    speed mph: 8.1
    direction degrees: 168
    direction cardinal: SSE
    explanation: 13 km/h (8 mph) from 168° (SSE)

date: 2026-08-09
day index: 5
strike score:
  final score: 4
  category: Poor
  category emoji: 💤
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 18
      out of: 25
      explanation: Moderate alignment: Swell from 290° is 10° off optimal 280°, workable but not ideal.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 0.6m is below minimum 1.2m. Waves will be weak/mushy.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 23 km/h from 290° (WNW). Destroying wave quality. Offshore range: 45°-110°.
  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 Sennen Cove. Either swell direction (290°), size (0.6m), or wind (23 km/h from 290°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.6
    height ft: 2.0
    direction degrees: 290
    direction cardinal: WNW
    period s: 9
    explanation: 0.6m (2.0ft) swell from 290° (WNW) at 9s period
  wind:
    speed kmh: 23
    speed mph: 14.3
    direction degrees: 290
    direction cardinal: WNW
    explanation: 23 km/h (14 mph) from 290° (WNW)
  secondary swell:
    height m: 0.5
    direction degrees: 279
    direction cardinal: W
    period s: 7
  windswell:
    height m: 0.5
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-10
day index: 6
strike score:
  final score: 6
  category: Poor
  category emoji: 💤
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 24
      out of: 25
      explanation: Perfect alignment: Swell from 279° is within 5° of optimal 280°.
    swell size:
      score: 5
      out of: 25
      explanation: Too small: 1.1m is below minimum 1.2m. 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: 1
      out of: 25
      explanation: Onshore/cross-shore: 16 km/h from 302° (WNW). Destroying wave quality. Offshore range: 45°-110°.
  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 Sennen Cove. Either swell direction (279°), size (1.1m), or wind (16 km/h from 302°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 279
    direction cardinal: W
    period s: 7
    explanation: 1.1m (3.6ft) swell from 279° (W) at 7s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 302
    direction cardinal: WNW
    explanation: 16 km/h (10 mph) from 302° (WNW)
  secondary swell:
    height m: 0.6
    direction degrees: 264
    direction cardinal: W
    period s: 8
  windswell:
    height m: 0.4
    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: 23
      out of: 25
      explanation: Good alignment: Swell from 282° is 2° off optimal 280°, still within prime range.
    swell size:
      score: 1
      out of: 25
      explanation: Too small: 0.5m is below minimum 1.2m. 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: 1
      out of: 25
      explanation: Onshore/cross-shore: 18 km/h from 129° (SE). Destroying wave quality. Offshore range: 45°-110°.
  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 Sennen Cove. Either swell direction (282°), size (0.5m), or wind (18 km/h from 129°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.5
    height ft: 1.6
    direction degrees: 282
    direction cardinal: WNW
    period s: 7
    explanation: 0.5m (1.6ft) swell from 282° (WNW) at 7s period
  wind:
    speed kmh: 18
    speed mph: 11.2
    direction degrees: 129
    direction cardinal: SE
    explanation: 18 km/h (11 mph) from 129° (SE)
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-12
day index: 8
strike score:
  final score: 16
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 13
      out of: 25
      explanation: Moderate alignment: Swell from 260° is 20° off optimal 280°, workable but not ideal.
    swell size:
      score: 2
      out of: 25
      explanation: Too small: 0.7m is below minimum 1.2m. Waves will be weak/mushy.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 11s is 92% of ideal 12s. Clean, powerful groundswell.
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 19 km/h from 227° (SW). Destroying wave quality. Offshore range: 45°-110°.
  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 Sennen Cove. Either swell direction (260°), size (0.7m), or wind (19 km/h from 227°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.7
    height ft: 2.3
    direction degrees: 260
    direction cardinal: W
    period s: 11
    explanation: 0.7m (2.3ft) swell from 260° (W) at 11s period
  wind:
    speed kmh: 19
    speed mph: 11.8
    direction degrees: 227
    direction cardinal: SW
    explanation: 19 km/h (12 mph) from 227° (SW)
  secondary swell:
    height m: 0.4
    direction degrees: 255
    direction cardinal: WSW
    period s: 5
  windswell:
    height m: 0.4
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-13
day index: 9
strike score:
  final score: 10
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 21
      out of: 25
      explanation: Good alignment: Swell from 275° is 5° off optimal 280°, still within prime range.
    swell size:
      score: 8
      out of: 25
      explanation: Marginal size: 1.2m is 0.9m from ideal 2.1m.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 0
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 262° (W). Destroying wave quality. Offshore range: 45°-110°.
  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 Sennen Cove. Either swell direction (275°), size (1.2m), or wind (17 km/h from 262°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.2
    height ft: 3.9
    direction degrees: 275
    direction cardinal: W
    period s: 9
    explanation: 1.2m (3.9ft) swell from 275° (W) at 9s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 262
    direction cardinal: W
    explanation: 17 km/h (11 mph) from 262° (W)
  secondary swell:
    height m: 0.8
    direction degrees: 260
    direction cardinal: W
    period s: 6
  windswell:
    height m: 0.4
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization