Surf Forecast for Lebu
type: Dataset
description: 10-day surf forecast with Strike Scores for Lebu, Biobio Region, Chile
about: Lebu
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -37.6
    longitude: -73.66
  description: Lebu is a rugged beach break in the former coal mining region.
summary:
  best day:
    date: 2026-08-12
    score: 62
    category: Fair
    explanation: Best day in the forecast: 2026-08-12 with a score of 62/100 (Fair)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 48/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-04
  day index: 0
  strike score:
    final score: 35
    category: Poor
    category emoji: 💤
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 11
        out of: 25
        explanation: Moderate alignment: Swell from 261° is 26° off optimal 235°, workable but not ideal.
      swell size:
        score: 20
        out of: 25
        explanation: Good size: 2.8m is within 15% of ideal 2.5m.
      swell period:
        score: 8
        out of: 25
        explanation: Moderate period: 13s meets minimum 12s but below ideal 16s. Some groundswell energy present.
      wind:
        score: 7
        out of: 25
        explanation: Onshore/cross-shore: 11 km/h from 311° (NW). Destroying wave quality. Offshore range: 55°-135°.
    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 Lebu. Either swell direction (261°), size (2.8m), or wind (11 km/h from 311°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 2.8
      height ft: 9.2
      direction degrees: 261
      direction cardinal: W
      period s: 13
      explanation: 2.8m (9.2ft) swell from 261° (W) at 13s period
    wind:
      speed kmh: 11
      speed mph: 6.8
      direction degrees: 311
      direction cardinal: NW
      explanation: 11 km/h (7 mph) from 311° (NW)
    windswell:
      height m: 0.3
      period s: 2
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-05
  day index: 1
  strike score:
    final score: 50
    category: Fair
    category emoji: 😐
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 14
        out of: 25
        explanation: Moderate alignment: Swell from 252° is 17° off optimal 235°, workable but not ideal.
      swell size:
        score: 22
        out of: 25
        explanation: Good size: 2.9m is within 15% of ideal 2.5m.
      swell period:
        score: 14
        out of: 25
        explanation: Moderate period: 14s meets minimum 12s but below ideal 16s. Some groundswell energy present.
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 17 km/h from 143° (SE). Destroying wave quality. Offshore range: 55°-135°.
    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: Surfable but not special at Lebu. The 2.9m swell from 252° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
  conditions:
    swell:
      height m: 2.9
      height ft: 9.5
      direction degrees: 252
      direction cardinal: WSW
      period s: 14
      explanation: 2.9m (9.5ft) swell from 252° (WSW) at 14s period
    wind:
      speed kmh: 17
      speed mph: 10.6
      direction degrees: 143
      direction cardinal: SE
      explanation: 17 km/h (11 mph) from 143° (SE)
    windswell:
      height m: 0.4
      period s: 2
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-06
  day index: 2
  strike score:
    final score: 51
    category: Fair
    category emoji: 😐
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 21
        out of: 25
        explanation: Good alignment: Swell from 240° is 5° off optimal 235°, still within prime range.
      swell size:
        score: 16
        out of: 25
        explanation: Marginal size: 2.3m is 0.2m from ideal 2.5m.
      swell period:
        score: 2
        out of: 25
        explanation: Short period: 10s is below minimum 12s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 12
        out of: 25
        explanation: Onshore/cross-shore: 9 km/h from 203° (SSW). Destroying wave quality. Offshore range: 55°-135°.
    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: Surfable but not special at Lebu. The 2.3m swell from 240° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
  conditions:
    swell:
      height m: 2.3
      height ft: 7.5
      direction degrees: 240
      direction cardinal: WSW
      period s: 10
      explanation: 2.3m (7.5ft) swell from 240° (WSW) at 10s period
    wind:
      speed kmh: 9
      speed mph: 5.6
      direction degrees: 203
      direction cardinal: SSW
      explanation: 9 km/h (6 mph) from 203° (SSW)
    secondary swell:
      height m: 0.9
      direction degrees: 239
      direction cardinal: WSW
      period s: 10
forecasts:
  date: 2026-08-07
  day index: 3
  strike score:
    final score: 38
    category: Poor
    category emoji: 💤
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 20
        out of: 25
        explanation: Good alignment: Swell from 229° is 6° off optimal 235°, still within prime range.
    summary: Poor conditions at Lebu. Either swell direction (229°), size (4.0m), or wind (25 km/h from 264°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-04T23:52:55.333Z
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: 17
out of: 25
explanation: Marginal size: 4.0m is 1.5m from ideal 2.5m.

score: 14
out of: 25
explanation: Moderate period: 14s meets minimum 12s but below ideal 16s. Some groundswell energy present.

score: 0
out of: 25
explanation: Onshore/cross-shore: 25 km/h from 264° (W). Destroying wave quality. Offshore range: 55°-135°.

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.

swell:
  height m: 4
  height ft: 13.1
  direction degrees: 229
  direction cardinal: SW
  period s: 14
  explanation: 4.0m (13.1ft) swell from 229° (SW) at 14s period
wind:
  speed kmh: 25
  speed mph: 15.5
  direction degrees: 264
  direction cardinal: W
  explanation: 25 km/h (16 mph) from 264° (W)
secondary swell:
  height m: 0.7
  direction degrees: 217
  direction cardinal: SW
  period s: 8
windswell:
  height m: 1.9
  period s: 5
  explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-08
day index: 4
strike score:
  final score: 40
  category: Poor
  category emoji: 💤
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 23
      out of: 25
      explanation: Good alignment: Swell from 233° is 2° off optimal 235°, still within prime range.
    swell size:
      score: 4
      out of: 25
      explanation: Too big: 5.4m exceeds maximum 4.0m. Risk of closeouts.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 14s meets minimum 12s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 9
      out of: 25
      explanation: Onshore/cross-shore: 10 km/h from 247° (WSW). Destroying wave quality. Offshore range: 55°-135°.
  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 Lebu. Either swell direction (233°), size (5.4m), or wind (10 km/h from 247°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 5.4
    height ft: 17.7
    direction degrees: 233
    direction cardinal: SW
    period s: 14
    explanation: 5.4m (17.7ft) swell from 233° (SW) at 14s period
  wind:
    speed kmh: 10
    speed mph: 6.2
    direction degrees: 247
    direction cardinal: WSW
    explanation: 10 km/h (6 mph) from 247° (WSW)
  windswell:
    height m: 0.5
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-09
day index: 5
strike score:
  final score: 55
  category: Fair
  category emoji: 😐
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 19
      out of: 25
      explanation: Moderate alignment: Swell from 227° is 8° off optimal 235°, workable but not ideal.
    swell size:
      score: 17
      out of: 25
      explanation: Marginal size: 4.0m is 1.5m from ideal 2.5m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 14s meets minimum 12s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 12
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 137° (SE). Destroying wave quality. Offshore range: 55°-135°.
  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: Surfable but not special at Lebu. The 4.0m swell from 227° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 4
    height ft: 13.1
    direction degrees: 227
    direction cardinal: SW
    period s: 14
    explanation: 4.0m (13.1ft) swell from 227° (SW) at 14s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 137
    direction cardinal: SE
    explanation: 11 km/h (7 mph) from 137° (SE)

date: 2026-08-10
day index: 6
strike score:
  final score: 48
  category: Fair
  category emoji: 😐
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 13
      out of: 25
      explanation: Moderate alignment: Swell from 215° is 20° off optimal 235°, workable but not ideal.
    swell size:
      score: 16
      out of: 25
      explanation: Marginal size: 2.3m is 0.2m from ideal 2.5m.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 13s meets minimum 12s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 14
      out of: 25
      explanation: Onshore/cross-shore: 8 km/h from 345° (NNW). Destroying wave quality. Offshore range: 55°-135°.
  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: Surfable but not special at Lebu. The 2.3m swell from 215° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 2.3
    height ft: 7.5
    direction degrees: 215
    direction cardinal: SW
    period s: 13
    explanation: 2.3m (7.5ft) swell from 215° (SW) at 13s period
  wind:
    speed kmh: 8
    speed mph: 5.0
    direction degrees: 345
    direction cardinal: NNW
    explanation: 8 km/h (5 mph) from 345° (NNW)
  secondary swell:
    height m: 0.5
    direction degrees: 228
    direction cardinal: SW
    period s: 15

date: 2026-08-11
day index: 7
strike score:
  final score: 52
  category: Fair
  category emoji: 😐
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 15
      out of: 25
      explanation: Moderate alignment: Swell from 220° is 15° off optimal 235°, workable but not ideal.
    swell size:
      score: 9
      out of: 25
      explanation: Marginal size: 1.1m is 1.4m from ideal 2.5m.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 13s meets minimum 12s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 23
      out of: 25
      explanation: Onshore/cross-shore: 5 km/h from 13° (NNE). Destroying wave quality. Offshore range: 55°-135°.
  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: Surfable but not special at Lebu. The 1.1m swell from 220° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 220
    direction cardinal: SW
    period s: 13
    explanation: 1.1m (3.6ft) swell from 220° (SW) at 13s period
  wind:
    speed kmh: 5
    speed mph: 3.1
    direction degrees: 13
    direction cardinal: NNE
    explanation: 5 km/h (3 mph) from 13° (NNE)
  secondary swell:
    height m: 0.6
    direction degrees: 213
    direction cardinal: SSW
    period s: 9

date: 2026-08-12
day index: 8
strike score:
  final score: 62
  category: Fair
  category emoji: 😐
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 22
      out of: 25
      explanation: Good alignment: Swell from 239° is 4° off optimal 235°, still within prime range.
    swell size:
      score: 9
      out of: 25
      explanation: Marginal size: 1.1m is 1.4m from ideal 2.5m.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 15s is 94% of ideal 16s. Clean, powerful groundswell.
    wind:
      score: 11
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 176° (S). Destroying wave quality. Offshore range: 55°-135°.
  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: Surfable but not special at Lebu. The 1.1m swell from 239° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 239
    direction cardinal: WSW
    period s: 15
    explanation: 1.1m (3.6ft) swell from 239° (WSW) at 15s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 176
    direction cardinal: S
    explanation: 11 km/h (7 mph) from 176° (S)
  secondary swell:
    height m: 0.5
    direction degrees: 207
    direction cardinal: SSW
    period s: 8

date: 2026-08-13
day index: 9
strike score:
  final score: 49
  category: Fair
  category emoji: 😐
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 20
      out of: 25
      explanation: Good alignment: Swell from 242° is 7° off optimal 235°, still within prime range.
    swell size:
      score: 10
      out of: 25
      explanation: Marginal size: 1.5m is 1.0m from ideal 2.5m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 16s is at or above ideal 16s. Long-period groundswell with maximum power.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 22 km/h from 21° (NNE). Destroying wave quality. Offshore range: 55°-135°.
  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: Surfable but not special at Lebu. The 1.5m swell from 242° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 1.5
    height ft: 4.9
    direction degrees: 242
    direction cardinal: WSW
    period s: 16
    explanation: 1.5m (4.9ft) swell from 242° (WSW) at 16s period
  wind:
    speed kmh: 22
    speed mph: 13.7
    direction degrees: 21
    direction cardinal: NNE
    explanation: 22 km/h (14 mph) from 21° (NNE)
  secondary swell:
    height m: 0.4
    direction degrees: 244
    direction cardinal: WSW
    period s: 6
  windswell:
    height m: 0.6
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization