Surf Forecast for Chapadmalal
type: Dataset
description: 10-day surf forecast with Strike Scores for Chapadmalal, Mar del Plata, Argentina
about: Chapadmalal
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -38.19441
    longitude: -57.68021
  description: Chapadmalal offers variety along its stretch of coast south of Mar del Plata, including some point break setups that work on different swell directions. The area is less developed and sees fewer crowds than the main city beaches.
summary:
  best day:
    date: 2026-08-04
    score: 68
    category: Good
    explanation: Best day in the forecast: 2026-08-04 with a score of 68/100 (Good)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 40/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-04
  day index: 0
  strike score:
    final score: 68
    category: Good
    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 133° is 24° off optimal 157°, workable but not ideal.
      swell size:
        score: 14
        out of: 25
        explanation: Marginal size: 1.3m is 0.1m from ideal 1.4m.
      swell period:
        score: 23
        out of: 25
        explanation: Good period: 11s is 92% of ideal 12s. Clean, powerful groundswell.
      wind:
        score: 20
        out of: 25
        explanation: Onshore/cross-shore: 7 km/h from 1° (N). Destroying wave quality. Offshore range: 270°-360°.
    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: Good surfable conditions at Chapadmalal. 1.3m swell from 133° with manageable wind. Solid session guaranteed.
  conditions:
    swell:
      height m: 1.3
      height ft: 4.3
      direction degrees: 133
      direction cardinal: SE
      period s: 11
      explanation: 1.3m (4.3ft) swell from 133° (SE) at 11s period
    wind:
      speed kmh: 7
      speed mph: 4.3
      direction degrees: 1
      direction cardinal: N
      explanation: 7 km/h (4 mph) from 1° (N)
forecasts:
  date: 2026-08-05
  day index: 1
  strike score:
    final score: 41
    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 134° is 23° off optimal 157°, workable but not ideal.
      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: 14
        out of: 25
        explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 7
        out of: 25
        explanation: Onshore/cross-shore: 13 km/h from 253° (WSW). Destroying wave quality. Offshore range: 270°-360°.
    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 Chapadmalal. Either swell direction (134°), size (0.8m), or wind (13 km/h from 253°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.8
      height ft: 2.6
      direction degrees: 134
      direction cardinal: SE
      period s: 10
      explanation: 0.8m (2.6ft) swell from 134° (SE) at 10s period
    wind:
      speed kmh: 13
      speed mph: 8.1
      direction degrees: 253
      direction cardinal: WSW
      explanation: 13 km/h (8 mph) from 253° (WSW)
    secondary swell:
      height m: 0.4
      direction degrees: 73
      direction cardinal: ENE
      period s: 6
forecasts:
  date: 2026-08-06
  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: 14
        out of: 25
        explanation: Moderate alignment: Swell from 130° is 27° off optimal 157°, workable but not ideal.
      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: 7s is below minimum 8s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 0
        out of: 25
        explanation: Onshore/cross-shore: 24 km/h from 166° (SSE). Destroying wave quality. Offshore range: 270°-360°.
    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 Chapadmalal. Either swell direction (130°), size (0.4m), or wind (24 km/h from 166°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.4
      height ft: 1.3
      direction degrees: 130
      direction cardinal: SE
      period s: 7
      explanation: 0.4m (1.3ft) swell from 130° (SE) at 7s period
    wind:
      speed kmh: 24
      speed mph: 14.9
      direction degrees: 166
      direction cardinal: SSE
      explanation: 24 km/h (15 mph) from 166° (SSE)
    windswell:
      height m: 0.5
      period s: 3
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-07
  day index: 3
  strike score:
    final score: 45
    category: Fair
    category emoji: 😐
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 18
        out of: 25
        explanation: Moderate alignment: Swell from 173° is 16° off optimal 157°, workable but not ideal.
      swell size:
        score: 14
        out of: 25
        explanation: Marginal size: 1.3m is 0.1m from ideal 1.4m.
    summary: Surfable but not special at Chapadmalal. The 1.3m swell from 173° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
provider: Strike Mission
date published: 2026-08-04T23:52:10.038Z
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: 6
out of: 25
explanation: Moderate period: 8s meets minimum 8s but below ideal 12s. Some groundswell energy present.

score: 16
out of: 25
explanation: Moderate offshore: 17 km/h from 289° (WNW). Still grooming but noticeable wind.

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.

swell:
  height m: 1.3
  height ft: 4.3
  direction degrees: 173
  direction cardinal: S
  period s: 8
  explanation: 1.3m (4.3ft) swell from 173° (S) at 8s period
wind:
  speed kmh: 17
  speed mph: 10.6
  direction degrees: 289
  direction cardinal: WNW
  explanation: 17 km/h (11 mph) from 289° (WNW)

date: 2026-08-08
day index: 4
strike score:
  final score: 21
  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 194° is 37° off optimal 157°, workable but not ideal.
    swell size:
      score: 11
      out of: 25
      explanation: Marginal size: 1.1m is 0.3m from ideal 1.4m.
    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: 38 km/h from 259° (W). Destroying wave quality. Offshore range: 270°-360°.
  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: -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 Chapadmalal. Either swell direction (194°), size (1.1m), or wind (38 km/h from 259°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 194
    direction cardinal: SSW
    period s: 11
    explanation: 1.1m (3.6ft) swell from 194° (SSW) at 11s period
  wind:
    speed kmh: 38
    speed mph: 23.6
    direction degrees: 259
    direction cardinal: W
    explanation: 38 km/h (24 mph) from 259° (W)
  windswell:
    height m: 1.3
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-09
day index: 5
strike score:
  final score: 30
  category: Poor
  category emoji: 💤
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 10
      out of: 25
      explanation: Moderate alignment: Swell from 199° is 42° off optimal 157°, workable but not ideal.
    swell size:
      score: 16
      out of: 25
      explanation: Marginal size: 1.4m is 0.1m from ideal 1.4m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 12s is at or above ideal 12s. Long-period groundswell with maximum power.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 31 km/h from 232° (SW). Destroying wave quality. Offshore range: 270°-360°.
  adjustments:
    wind history:
      adjustment: -14
      groomed: false
      morning sickness: true
      explanation: -14 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 Chapadmalal. Either swell direction (199°), size (1.4m), or wind (31 km/h from 232°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.4
    height ft: 4.6
    direction degrees: 199
    direction cardinal: SSW
    period s: 12
    explanation: 1.4m (4.6ft) swell from 199° (SSW) at 12s period
  wind:
    speed kmh: 31
    speed mph: 19.3
    direction degrees: 232
    direction cardinal: SW
    explanation: 31 km/h (19 mph) from 232° (SW)
  windswell:
    height m: 0.7
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-10
day index: 6
strike score:
  final score: 31
  category: Poor
  category emoji: 💤
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 14
      out of: 25
      explanation: Moderate alignment: Swell from 185° is 28° off optimal 157°, workable but not ideal.
    swell size:
      score: 20
      out of: 25
      explanation: Good size: 1.8m is within 15% of ideal 1.4m.
    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: 25 km/h from 214° (SW). Destroying wave quality. Offshore range: 270°-360°.
  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 Chapadmalal. Either swell direction (185°), size (1.8m), or wind (25 km/h from 214°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.8
    height ft: 5.9
    direction degrees: 185
    direction cardinal: S
    period s: 11
    explanation: 1.8m (5.9ft) swell from 185° (S) at 11s period
  wind:
    speed kmh: 25
    speed mph: 15.5
    direction degrees: 214
    direction cardinal: SW
    explanation: 25 km/h (16 mph) from 214° (SW)
  secondary swell:
    height m: 0.4
    direction degrees: 170
    direction cardinal: S
    period s: 9
  windswell:
    height m: 0.6
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-11
day index: 7
strike score:
  final score: 37
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 18
      out of: 25
      explanation: Moderate alignment: Swell from 172° is 15° off optimal 157°, workable but not ideal.
    swell size:
      score: 18
      out of: 25
      explanation: Marginal size: 1.9m is 0.4m from ideal 1.4m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 12s 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 225° (SW). Destroying wave quality. Offshore range: 270°-360°.
  adjustments:
    wind history:
      adjustment: -21
      groomed: false
      morning sickness: true
      explanation: -21 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 Chapadmalal. Either swell direction (172°), size (1.9m), or wind (16 km/h from 225°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.9
    height ft: 6.2
    direction degrees: 172
    direction cardinal: S
    period s: 12
    explanation: 1.9m (6.2ft) swell from 172° (S) at 12s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 225
    direction cardinal: SW
    explanation: 16 km/h (10 mph) from 225° (SW)
  secondary swell:
    height m: 0.4
    direction degrees: 50
    direction cardinal: NE
    period s: 5

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: 19
      out of: 25
      explanation: Moderate alignment: Swell from 169° is 12° off optimal 157°, workable but not ideal.
    swell size:
      score: 24
      out of: 25
      explanation: Perfect size: 1.7m is at the sweet spot (ideal: 1.4m).
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 11s is 92% of ideal 12s. Clean, powerful groundswell.
    wind:
      score: 7
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 128° (SE). Destroying wave quality. Offshore range: 270°-360°.
  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: Surfable but not special at Chapadmalal. The 1.7m swell from 169° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 1.7
    height ft: 5.6
    direction degrees: 169
    direction cardinal: S
    period s: 11
    explanation: 1.7m (5.6ft) swell from 169° (S) at 11s 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: 2026-08-13
day index: 9
strike score:
  final score: 64
  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 167° is 10° off optimal 157°, still within prime range.
    swell size:
      score: 12
      out of: 25
      explanation: Marginal size: 1.2m is 0.3m from ideal 1.4m.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 11s is 92% of ideal 12s. Clean, powerful groundswell.
    wind:
      score: 13
      out of: 25
      explanation: Onshore/cross-shore: 8 km/h from 169° (S). Destroying wave quality. Offshore range: 270°-360°.
  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 Chapadmalal. The 1.2m swell from 167° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 1.2
    height ft: 3.9
    direction degrees: 167
    direction cardinal: SSE
    period s: 11
    explanation: 1.2m (3.9ft) swell from 167° (SSE) at 11s period
  wind:
    speed kmh: 8
    speed mph: 5.0
    direction degrees: 169
    direction cardinal: S
    explanation: 8 km/h (5 mph) from 169° (S)

Strike Mission
type: Organization