Surf Forecast for Ponta Negra
type: Dataset
description: 10-day surf forecast with Strike Scores for Ponta Negra, Natal, RN, Brazil
about: Ponta Negra
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -5.8736
    longitude: -35.17663
  description: Ponta Negra is Natal's main surf beach, an urban stretch of sand backed by the iconic Morro do Careca dune. The beach offers multiple peaks suitable for all levels, with the best waves typically found near the rocky sections. The city's surf scene is centered here, with plenty of surf schools, shops, and beach bars. The warm water and consistent waves make it an ideal learning destination.
summary:
  best day:
    date: 2026-08-09
    score: 41
    category: Poor
    explanation: Best day in the forecast: 2026-08-09 with a score of 41/100 (Poor)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 26/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-04
  day index: 0
  strike score:
    final score: 25
    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 97° is 15° off optimal 112°, workable but not ideal.
      swell size:
        score: 12
        out of: 25
        explanation: Marginal size: 1.2m is 0.3m from ideal 1.4m.
      swell period:
        score: 14
        out of: 25
        explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 20 km/h from 145° (SE). Destroying wave quality. Offshore range: 157°-247°.
    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 Ponta Negra. Either swell direction (97°), size (1.2m), or wind (20 km/h from 145°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.2
      height ft: 3.9
      direction degrees: 97
      direction cardinal: E
      period s: 10
      explanation: 1.2m (3.9ft) swell from 97° (E) at 10s period
    wind:
      speed kmh: 20
      speed mph: 12.4
      direction degrees: 145
      direction cardinal: SE
      explanation: 20 km/h (12 mph) from 145° (SE)
    windswell:
      height m: 0.5
      period s: 3
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-05
  day index: 1
  strike score:
    final score: 39
    category: Poor
    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 95° is 17° off optimal 112°, workable but not ideal.
      swell size:
        score: 12
        out of: 25
        explanation: Marginal size: 1.2m is 0.3m from ideal 1.4m.
      swell period:
        score: 25
        out of: 25
        explanation: Perfect period: 13s is at or above ideal 12s. Long-period groundswell with maximum power.
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 21 km/h from 146° (SE). Destroying wave quality. Offshore range: 157°-247°.
    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 Ponta Negra. Either swell direction (95°), size (1.2m), or wind (21 km/h from 146°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.2
      height ft: 3.9
      direction degrees: 95
      direction cardinal: E
      period s: 13
      explanation: 1.2m (3.9ft) swell from 95° (E) at 13s period
    wind:
      speed kmh: 21
      speed mph: 13.0
      direction degrees: 146
      direction cardinal: SE
      explanation: 21 km/h (13 mph) from 146° (SE)
    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: 22
    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 91° is 21° off optimal 112°, workable but not ideal.
      swell size:
        score: 9
        out of: 25
        explanation: Marginal size: 1.0m is 0.4m 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: 1
        out of: 25
        explanation: Onshore/cross-shore: 18 km/h from 129° (SE). Destroying wave quality. Offshore range: 157°-247°.
    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 Ponta Negra. Either swell direction (91°), size (1.0m), or wind (18 km/h from 129°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1
      height ft: 3.3
      direction degrees: 91
      direction cardinal: E
      period s: 11
      explanation: 1.0m (3.3ft) swell from 91° (E) at 11s 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: 0.5
      period s: 3
      explanation: Local wind-generated waves (choppy, short-period)
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: 13
        out of: 25
        explanation: Moderate alignment: Swell from 92° is 20° off optimal 112°, workable but not ideal.
    summary: Poor conditions at Ponta Negra. Either swell direction (92°), size (0.8m), or wind (18 km/h from 113°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-05T00:35:29.737Z
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: 5
out of: 25
explanation: Too small: 0.8m is below minimum 0.9m. Waves will be weak/mushy.

score: 14
out of: 25
explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.

score: 1
out of: 25
explanation: Onshore/cross-shore: 18 km/h from 113° (ESE). Destroying wave quality. Offshore range: 157°-247°.

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.

swell:
  height m: 0.8
  height ft: 2.6
  direction degrees: 92
  direction cardinal: E
  period s: 10
  explanation: 0.8m (2.6ft) swell from 92° (E) at 10s period
wind:
  speed kmh: 18
  speed mph: 11.2
  direction degrees: 113
  direction cardinal: ESE
  explanation: 18 km/h (11 mph) from 113° (ESE)
windswell:
  height m: 0.5
  period s: 3
  explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-08
day index: 4
strike score:
  final score: 24
  category: Poor
  category emoji: 💤
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 10
      out of: 25
      explanation: Moderate alignment: Swell from 85° is 27° off optimal 112°, 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: 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 115° (ESE). Destroying wave quality. Offshore range: 157°-247°.
  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 Ponta Negra. Either swell direction (85°), size (0.8m), or wind (16 km/h from 115°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.8
    height ft: 2.6
    direction degrees: 85
    direction cardinal: E
    period s: 12
    explanation: 0.8m (2.6ft) swell from 85° (E) at 12s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 115
    direction cardinal: ESE
    explanation: 16 km/h (10 mph) from 115° (ESE)
  secondary swell:
    height m: 0.4
    direction degrees: 123
    direction cardinal: ESE
    period s: 7
  windswell:
    height m: 0.4
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-09
day index: 5
strike score:
  final score: 41
  category: Poor
  category emoji: 💤
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 15
      out of: 25
      explanation: Moderate alignment: Swell from 97° is 15° off optimal 112°, workable but not ideal.
    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: 1
      out of: 25
      explanation: Onshore/cross-shore: 16 km/h from 118° (ESE). Destroying wave quality. Offshore range: 157°-247°.
  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 Ponta Negra. Either swell direction (97°), size (1.2m), or wind (16 km/h from 118°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.2
    height ft: 3.9
    direction degrees: 97
    direction cardinal: E
    period s: 11
    explanation: 1.2m (3.9ft) swell from 97° (E) at 11s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 118
    direction cardinal: ESE
    explanation: 16 km/h (10 mph) from 118° (ESE)
  windswell:
    height m: 0.4
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-10
day index: 6
strike score:
  final score: 29
  category: Poor
  category emoji: 💤
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 15
      out of: 25
      explanation: Moderate alignment: Swell from 96° is 16° off optimal 112°, workable but not ideal.
    swell size:
      score: 12
      out of: 25
      explanation: Marginal size: 1.2m is 0.3m from ideal 1.4m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 18 km/h from 131° (SE). Destroying wave quality. Offshore range: 157°-247°.
  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 Ponta Negra. Either swell direction (96°), size (1.2m), or wind (18 km/h from 131°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.2
    height ft: 3.9
    direction degrees: 96
    direction cardinal: E
    period s: 10
    explanation: 1.2m (3.9ft) swell from 96° (E) at 10s period
  wind:
    speed kmh: 18
    speed mph: 11.2
    direction degrees: 131
    direction cardinal: SE
    explanation: 18 km/h (11 mph) from 131° (SE)
  windswell:
    height m: 0.5
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-11
day index: 7
strike score:
  final score: 30
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 19
      out of: 25
      explanation: Moderate alignment: Swell from 103° is 9° off optimal 112°, workable but not ideal.
    swell size:
      score: 9
      out of: 25
      explanation: Marginal size: 1.0m is 0.4m from ideal 1.4m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 21 km/h from 150° (SSE). Destroying wave quality. Offshore range: 157°-247°.
  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 Ponta Negra. Either swell direction (103°), size (1.0m), or wind (21 km/h from 150°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 103
    direction cardinal: ESE
    period s: 10
    explanation: 1.0m (3.3ft) swell from 103° (ESE) at 10s period
  wind:
    speed kmh: 21
    speed mph: 13.0
    direction degrees: 150
    direction cardinal: SSE
    explanation: 21 km/h (13 mph) from 150° (SSE)
  windswell:
    height m: 0.7
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-12
day index: 8
strike score:
  final score: 23
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 23
      out of: 25
      explanation: Good alignment: Swell from 109° is 3° off optimal 112°, still within prime range.
    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: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 23 km/h from 150° (SSE). Destroying wave quality. Offshore range: 157°-247°.
  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: -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 Ponta Negra. Either swell direction (109°), size (0.7m), or wind (23 km/h from 150°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.7
    height ft: 2.3
    direction degrees: 109
    direction cardinal: ESE
    period s: 10
    explanation: 0.7m (2.3ft) swell from 109° (ESE) at 10s period
  wind:
    speed kmh: 23
    speed mph: 14.3
    direction degrees: 150
    direction cardinal: SSE
    explanation: 23 km/h (14 mph) from 150° (SSE)
  windswell:
    height m: 0.8
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-13
day index: 9
strike score:
  final score: 14
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 23
      out of: 25
      explanation: Good alignment: Swell from 109° is 3° off optimal 112°, still within prime range.
    swell size:
      score: 8
      out of: 25
      explanation: Marginal size: 0.9m is 0.5m from ideal 1.4m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 22 km/h from 148° (SSE). Destroying wave quality. Offshore range: 157°-247°.
  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: -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 Ponta Negra. Either swell direction (109°), size (0.9m), or wind (22 km/h from 148°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 0.9
    height ft: 3.0
    direction degrees: 109
    direction cardinal: ESE
    period s: 10
    explanation: 0.9m (3.0ft) swell from 109° (ESE) at 10s period
  wind:
    speed kmh: 22
    speed mph: 13.7
    direction degrees: 148
    direction cardinal: SSE
    explanation: 22 km/h (14 mph) from 148° (SSE)
  secondary swell:
    height m: 0.4
    direction degrees: 81
    direction cardinal: E
    period s: 7
  windswell:
    height m: 0.7
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization