Surf Forecast for Isla Grande
type: Dataset
description: 10-day surf forecast with Strike Scores for Isla Grande, Colón, Panama
about: Isla Grande
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: 9.6333
    longitude: -79.5667
  description: Isla Grande is Panama's Caribbean secret—a reef break on the country's north coast that needs north swells to activate but rewards the right conditions with crystal-clear water and quality left-handers over shallow reef. Most visitors know this island as a weekend escape from Panama City for snorkeling and beaches, but a small community of surfers monitors winter swells from the North Atlantic. The boat ride from historic Portobelo adds adventure, while the island's laid-back atmosphere provides the perfect counterpoint to the Pacific coast's more consistent surf scene.
summary:
  best day:
    date: 2026-08-13
    score: 56
    category: Fair
    explanation: Best day in the forecast: 2026-08-13 with a score of 56/100 (Fair)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 46/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-04
  day index: 0
  strike score:
    final score: 46
    category: Fair
    category emoji: 😐
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 10
        out of: 25
        explanation: Moderate alignment: Swell from 47° is 27° off optimal 20°, workable but not ideal.
      swell size:
        score: 23
        out of: 25
        explanation: Good size: 2.1m is within 15% of ideal 1.8m.
      swell period:
        score: 8
        out of: 25
        explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 11
        out of: 25
        explanation: Onshore/cross-shore: 9 km/h from 311° (NW). Destroying wave quality. Offshore range: 140°-220°.
    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 Isla Grande. The 2.1m swell from 47° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
  conditions:
    swell:
      height m: 2.1
      height ft: 6.9
      direction degrees: 47
      direction cardinal: NE
      period s: 9
      explanation: 2.1m (6.9ft) swell from 47° (NE) at 9s period
    wind:
      speed kmh: 9
      speed mph: 5.6
      direction degrees: 311
      direction cardinal: NW
      explanation: 9 km/h (6 mph) from 311° (NW)
forecasts:
  date: 2026-08-05
  day index: 1
  strike score:
    final score: 48
    category: Fair
    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 45° is 25° off optimal 20°, workable but not ideal.
      swell size:
        score: 23
        out of: 25
        explanation: Good size: 2.0m is within 15% of ideal 1.8m.
      swell period:
        score: 8
        out of: 25
        explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 12
        out of: 25
        explanation: Onshore/cross-shore: 9 km/h from 296° (WNW). Destroying wave quality. Offshore range: 140°-220°.
    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 Isla Grande. The 2.0m swell from 45° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
  conditions:
    swell:
      height m: 2
      height ft: 6.6
      direction degrees: 45
      direction cardinal: NE
      period s: 9
      explanation: 2.0m (6.6ft) swell from 45° (NE) at 9s period
    wind:
      speed kmh: 9
      speed mph: 5.6
      direction degrees: 296
      direction cardinal: WNW
      explanation: 9 km/h (6 mph) from 296° (WNW)
forecasts:
  date: 2026-08-06
  day index: 2
  strike score:
    final score: 54
    category: Fair
    category emoji: 😐
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 11
        out of: 25
        explanation: Moderate alignment: Swell from 46° is 26° off optimal 20°, workable but not ideal.
      swell size:
        score: 18
        out of: 25
        explanation: Marginal size: 1.8m is 0.1m from ideal 1.8m.
      swell period:
        score: 8
        out of: 25
        explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 18
        out of: 25
        explanation: Onshore/cross-shore: 5 km/h from 344° (NNW). Destroying wave quality. Offshore range: 140°-220°.
    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 Isla Grande. The 1.8m swell from 46° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
  conditions:
    swell:
      height m: 1.8
      height ft: 5.9
      direction degrees: 46
      direction cardinal: NE
      period s: 9
      explanation: 1.8m (5.9ft) swell from 46° (NE) at 9s period
    wind:
      speed kmh: 5
      speed mph: 3.1
      direction degrees: 344
      direction cardinal: NNW
      explanation: 5 km/h (3 mph) from 344° (NNW)
forecasts:
  date: 2026-08-07
  day index: 3
  strike score:
    final score: 37
    category: Poor
    category emoji: 💤
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 11
        out of: 25
        explanation: Moderate alignment: Swell from 44° is 24° off optimal 20°, workable but not ideal.
      swell size:
        score: 15
        out of: 25
        explanation: Marginal size: 1.6m is 0.1m from ideal 1.8m.
      swell period:
        score: 6
        out of: 25
        explanation: Moderate period: 8s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 11
        out of: 25
        explanation: Onshore/cross-shore: 9 km/h from 27° (NNE). Destroying wave quality. Offshore range: 140°-220°.
    summary: Poor conditions at Isla Grande. Either swell direction (44°), size (1.6m), or wind (9 km/h from 27°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-04T23:47:38.163Z
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)

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.

swell:
  height m: 1.6
  height ft: 5.2
  direction degrees: 44
  direction cardinal: NE
  period s: 8
  explanation: 1.6m (5.2ft) swell from 44° (NE) at 8s period
wind:
  speed kmh: 9
  speed mph: 5.6
  direction degrees: 27
  direction cardinal: NNE
  explanation: 9 km/h (6 mph) from 27° (NNE)

date: 2026-08-08
day index: 4
strike score:
  final score: 37
  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 46° is 26° off optimal 20°, workable but not ideal.
    swell size:
      score: 19
      out of: 25
      explanation: Marginal size: 2.3m is 0.5m from ideal 1.8m.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 8s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 7
      out of: 25
      explanation: Onshore/cross-shore: 12 km/h from 60° (ENE). Destroying wave quality. Offshore range: 140°-220°.
  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 Isla Grande. Either swell direction (46°), size (2.3m), or wind (12 km/h from 60°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 2.3
    height ft: 7.5
    direction degrees: 46
    direction cardinal: NE
    period s: 8
    explanation: 2.3m (7.5ft) swell from 46° (NE) at 8s period
  wind:
    speed kmh: 12
    speed mph: 7.5
    direction degrees: 60
    direction cardinal: ENE
    explanation: 12 km/h (7 mph) from 60° (ENE)
  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: 45
  category: Fair
  category emoji: 😐
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 11
      out of: 25
      explanation: Moderate alignment: Swell from 46° is 26° off optimal 20°, workable but not ideal.
    swell size:
      score: 18
      out of: 25
      explanation: Marginal size: 2.4m is 0.6m from ideal 1.8m.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 13
      out of: 25
      explanation: Onshore/cross-shore: 8 km/h from 15° (NNE). Destroying wave quality. Offshore range: 140°-220°.
  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 Isla Grande. The 2.4m swell from 46° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 2.4
    height ft: 7.9
    direction degrees: 46
    direction cardinal: NE
    period s: 9
    explanation: 2.4m (7.9ft) swell from 46° (NE) at 9s period
  wind:
    speed kmh: 8
    speed mph: 5.0
    direction degrees: 15
    direction cardinal: NNE
    explanation: 8 km/h (5 mph) from 15° (NNE)

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: 11
      out of: 25
      explanation: Moderate alignment: Swell from 46° is 26° off optimal 20°, workable but not ideal.
    swell size:
      score: 20
      out of: 25
      explanation: Good size: 1.9m is within 15% of ideal 1.8m.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 14
      out of: 25
      explanation: Onshore/cross-shore: 8 km/h from 281° (W). Destroying wave quality. Offshore range: 140°-220°.
  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 Isla Grande. The 1.9m swell from 46° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 1.9
    height ft: 6.2
    direction degrees: 46
    direction cardinal: NE
    period s: 9
    explanation: 1.9m (6.2ft) swell from 46° (NE) at 9s period
  wind:
    speed kmh: 8
    speed mph: 5.0
    direction degrees: 281
    direction cardinal: W
    explanation: 8 km/h (5 mph) from 281° (W)

date: 2026-08-11
day index: 7
strike score:
  final score: 38
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 11
      out of: 25
      explanation: Moderate alignment: Swell from 45° is 25° off optimal 20°, workable but not ideal.
    swell size:
      score: 23
      out of: 25
      explanation: Good size: 2.1m is within 15% of ideal 1.8m.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 4
      out of: 25
      explanation: Onshore/cross-shore: 13 km/h from 35° (NE). Destroying wave quality. Offshore range: 140°-220°.
  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 Isla Grande. Either swell direction (45°), size (2.1m), or wind (13 km/h from 35°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 2.1
    height ft: 6.9
    direction degrees: 45
    direction cardinal: NE
    period s: 9
    explanation: 2.1m (6.9ft) swell from 45° (NE) at 9s period
  wind:
    speed kmh: 13
    speed mph: 8.1
    direction degrees: 35
    direction cardinal: NE
    explanation: 13 km/h (8 mph) from 35° (NE)
  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: 48
  category: Fair
  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 43° is 23° off optimal 20°, workable but not ideal.
    swell size:
      score: 20
      out of: 25
      explanation: Good size: 2.2m is within 15% of ideal 1.8m.
    swell period:
      score: 8
      out of: 25
      explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 11
      out of: 25
      explanation: Onshore/cross-shore: 9 km/h from 12° (NNE). Destroying wave quality. Offshore range: 140°-220°.
  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 Isla Grande. The 2.2m swell from 43° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 2.2
    height ft: 7.2
    direction degrees: 43
    direction cardinal: NE
    period s: 9
    explanation: 2.2m (7.2ft) swell from 43° (NE) at 9s period
  wind:
    speed kmh: 9
    speed mph: 5.6
    direction degrees: 12
    direction cardinal: NNE
    explanation: 9 km/h (6 mph) from 12° (NNE)

date: 2026-08-13
day index: 9
strike score:
  final score: 56
  category: Fair
  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 40° is 20° off optimal 20°, workable but not ideal.
    swell size:
      score: 19
      out of: 25
      explanation: Marginal size: 2.3m is 0.5m from ideal 1.8m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 15
      out of: 25
      explanation: Onshore/cross-shore: 7 km/h from 29° (NNE). Destroying wave quality. Offshore range: 140°-220°.
  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 Isla Grande. The 2.3m swell from 40° 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: 40
    direction cardinal: NE
    period s: 10
    explanation: 2.3m (7.5ft) swell from 40° (NE) at 10s period
  wind:
    speed kmh: 7
    speed mph: 4.3
    direction degrees: 29
    direction cardinal: NNE
    explanation: 7 km/h (4 mph) from 29° (NNE)

Strike Mission
type: Organization