Surf Forecast for Shipwrecks
type: Dataset
description: 10-day surf forecast with Strike Scores for Shipwrecks, Nusa Lembongan, Bali, Indonesia
about: Shipwrecks
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -8.665
    longitude: 115.432
  description: Shipwrecks is an epic right reef break off Nusa Lembongan, producing quality tubes in crystal-clear water just a short boat ride from mainland Bali. The wave breaks over a shallow coral reef and works best during the dry season (April-October) with SE trade winds providing offshore conditions. The stunning visibility of the water makes it a favourite for surf photographers, and the proximity to Bali's amenities makes it an accessible world-class wave.
summary:
  best day:
    date: 2026-08-07
    score: 100
    category: Epic
    explanation: Best day in the forecast: 2026-08-07 with a score of 100/100 (Epic)
  firing days count: 7
  firing days:
    date: 2026-08-06
    score: 92
  firing days:
    date: 2026-08-07
    score: 100
  firing days:
    date: 2026-08-08
    score: 92
  firing days:
    date: 2026-08-09
    score: 98
  firing days:
    date: 2026-08-10
    score: 87
  firing days:
    date: 2026-08-12
    score: 88
  firing days:
    date: 2026-08-14
    score: 93
  overall recommendation: Strong recommendation: Shipwrecks has 7 Firing days in the next 10 days. Book your trip!
forecasts:
  date: 2026-08-05
  day index: 0
  strike score:
    final score: 78
    category: Good
    category emoji: ✅
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 19
        out of: 25
        explanation: Moderate alignment: Swell from 197° is 8° off optimal 205°, workable but not ideal.
      swell size:
        score: 10
        out of: 25
        explanation: Marginal size: 1.4m is 0.4m from ideal 1.8m.
      swell period:
        score: 25
        out of: 25
        explanation: Perfect period: 14s is at or above ideal 14s. Long-period groundswell with maximum power.
      wind:
        score: 24
        out of: 25
        explanation: Moderate offshore: 14 km/h from 127° (SE). Still grooming but noticeable wind.
    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: Good surfable conditions at Shipwrecks. 1.4m swell from 197° with manageable wind. Solid session guaranteed.
  conditions:
    swell:
      height m: 1.4
      height ft: 4.6
      direction degrees: 197
      direction cardinal: SSW
      period s: 14
      explanation: 1.4m (4.6ft) swell from 197° (SSW) at 14s period
    wind:
      speed kmh: 14
      speed mph: 8.7
      direction degrees: 127
      direction cardinal: SE
      explanation: 14 km/h (9 mph) from 127° (SE)
forecasts:
  date: 2026-08-06
  day index: 1
  strike score:
    final score: 92
    category: Firing
    category emoji: 🔥
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 23
        out of: 25
        explanation: Good alignment: Swell from 207° is 2° off optimal 205°, still within prime range.
      swell size:
        score: 20
        out of: 25
        explanation: Good size: 1.9m is within 15% of ideal 1.8m.
      swell period:
        score: 23
        out of: 25
        explanation: Good period: 17s is 121% of ideal 14s. Clean, powerful groundswell.
      wind:
        score: 24
        out of: 25
        explanation: Moderate offshore: 15 km/h from 118° (ESE). Still grooming but noticeable wind.
    adjustments:
      wind history:
        adjustment: 6
        groomed: true
        morning sickness: false
        explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
      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: Excellent conditions at Shipwrecks. The 1.9m swell from 207° aligns well with the spot, and offshore winds are grooming the face. Worth planning a trip around this.
  conditions:
    swell:
      height m: 1.9
      height ft: 6.2
      direction degrees: 207
      direction cardinal: SSW
      period s: 17
      explanation: 1.9m (6.2ft) swell from 207° (SSW) at 17s period
    wind:
      speed kmh: 15
      speed mph: 9.3
      direction degrees: 118
      direction cardinal: ESE
      explanation: 15 km/h (9 mph) from 118° (ESE)
forecasts:
  date: 2026-08-07
  day index: 2
  strike score:
    final score: 100
    category: Epic
    category emoji: ⚡
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 25
        out of: 25
        explanation: Perfect alignment: Swell from 205° is within 5° of optimal 205°.
      swell size:
        score: 23
        out of: 25
        explanation: Good size: 2.0m is within 15% of ideal 1.8m.
      swell period:
        score: 25
        out of: 25
        explanation: Perfect period: 16s is at or above ideal 14s. Long-period groundswell with maximum power.
      wind:
        score: 24
        out of: 25
        explanation: Moderate offshore: 14 km/h from 117° (ESE). Still grooming but noticeable wind.
    adjustments:
      wind history:
        adjustment: 6
        groomed: true
        morning sickness: false
        explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
      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: Epic conditions at Shipwrecks! All factors are nearly perfect: 2.0m swell from 205° at 16s period, with offshore wind. Drop everything and go!
  conditions:
    swell:
      height m: 2
      height ft: 6.6
      direction degrees: 205
      direction cardinal: SSW
      period s: 16
      explanation: 2.0m (6.6ft) swell from 205° (SSW) at 16s period
    wind:
      speed kmh: 14
      speed mph: 8.7
      direction degrees: 117
      direction cardinal: ESE
      explanation: 14 km/h (9 mph) from 117° (ESE)
forecasts:
  date: 2026-08-08
  day index: 3
provider: Strike Mission
date published: 2026-08-05T08:09:06.847Z
temporal coverage: 2026-08-05/2026-08-14
data sources: Open-Meteo Marine API (swell/wave data)
data sources: Open-Meteo Weather API (wind/weather data)

final score: 92
category: Firing
category emoji: 🔥
confidence: 0.92
confidence explanation: High confidence (2-3 day forecast)
breakdown:
  swell direction:
    score: 24
    out of: 25
    explanation: Perfect alignment: Swell from 204° is within 5° of optimal 205°.
  swell size:
    score: 18
    out of: 25
    explanation: Marginal size: 2.3m is 0.5m from ideal 1.8m.
  swell period:
    score: 25
    out of: 25
    explanation: Perfect period: 16s is at or above ideal 14s. Long-period groundswell with maximum power.
  wind:
    score: 24
    out of: 25
    explanation: Moderate offshore: 14 km/h from 125° (SE). Still grooming but noticeable wind.
adjustments:
  wind history:
    adjustment: 6
    groomed: true
    morning sickness: false
    explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
  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: Excellent conditions at Shipwrecks. The 2.3m swell from 204° aligns well with the spot, and offshore winds are grooming the face. Worth planning a trip around this.

swell:
  height m: 2.3
  height ft: 7.5
  direction degrees: 204
  direction cardinal: SSW
  period s: 16
  explanation: 2.3m (7.5ft) swell from 204° (SSW) at 16s period
wind:
  speed kmh: 14
  speed mph: 8.7
  direction degrees: 125
  direction cardinal: SE
  explanation: 14 km/h (9 mph) from 125° (SE)

date: 2026-08-09
day index: 4
strike score:
  final score: 98
  category: Epic
  category emoji: ⚡
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 24
      out of: 25
      explanation: Perfect alignment: Swell from 204° is within 5° of optimal 205°.
    swell size:
      score: 23
      out of: 25
      explanation: Good size: 2.0m is within 15% of ideal 1.8m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 16s is at or above ideal 14s. Long-period groundswell with maximum power.
    wind:
      score: 24
      out of: 25
      explanation: Moderate offshore: 15 km/h from 133° (SE). Still grooming but noticeable wind.
  adjustments:
    wind history:
      adjustment: 6
      groomed: true
      morning sickness: false
      explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
    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: Epic conditions at Shipwrecks! All factors are nearly perfect: 2.0m swell from 204° at 16s period, with offshore wind. Drop everything and go!
conditions:
  swell:
    height m: 2
    height ft: 6.6
    direction degrees: 204
    direction cardinal: SSW
    period s: 16
    explanation: 2.0m (6.6ft) swell from 204° (SSW) at 16s period
  wind:
    speed kmh: 15
    speed mph: 9.3
    direction degrees: 133
    direction cardinal: SE
    explanation: 15 km/h (9 mph) from 133° (SE)

date: 2026-08-10
day index: 5
strike score:
  final score: 87
  category: Firing
  category emoji: 🔥
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 20
      out of: 25
      explanation: Good alignment: Swell from 199° is 6° off optimal 205°, still within prime range.
    swell size:
      score: 20
      out of: 25
      explanation: Good size: 2.2m is within 15% of ideal 1.8m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 16s is at or above ideal 14s. Long-period groundswell with maximum power.
    wind:
      score: 24
      out of: 25
      explanation: Moderate offshore: 13 km/h from 138° (SE). Still grooming but noticeable wind.
  adjustments:
    wind history:
      adjustment: 6
      groomed: true
      morning sickness: false
      explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
    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: Excellent conditions at Shipwrecks. The 2.2m swell from 199° aligns well with the spot, and offshore winds are grooming the face. Worth planning a trip around this.
conditions:
  swell:
    height m: 2.2
    height ft: 7.2
    direction degrees: 199
    direction cardinal: SSW
    period s: 16
    explanation: 2.2m (7.2ft) swell from 199° (SSW) at 16s period
  wind:
    speed kmh: 13
    speed mph: 8.1
    direction degrees: 138
    direction cardinal: SE
    explanation: 13 km/h (8 mph) from 138° (SE)
  secondary swell:
    height m: 0.5
    direction degrees: 164
    direction cardinal: SSE
    period s: 6

date: 2026-08-11
day index: 6
strike score:
  final score: 77
  category: Good
  category emoji: ✅
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 20
      out of: 25
      explanation: Good alignment: Swell from 198° is 7° off optimal 205°, still within prime range.
    swell size:
      score: 7
      out of: 25
      explanation: Too big: 2.9m exceeds maximum 2.4m. Risk of closeouts.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 17s is 121% of ideal 14s. Clean, powerful groundswell.
    wind:
      score: 25
      out of: 25
      explanation: Moderate offshore: 10 km/h from 152° (SSE). Still grooming but noticeable wind.
  adjustments:
    wind history:
      adjustment: 6
      groomed: true
      morning sickness: false
      explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
    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 Shipwrecks. 2.9m swell from 198° with manageable wind. Solid session guaranteed.
conditions:
  swell:
    height m: 2.9
    height ft: 9.5
    direction degrees: 198
    direction cardinal: SSW
    period s: 17
    explanation: 2.9m (9.5ft) swell from 198° (SSW) at 17s period
  wind:
    speed kmh: 10
    speed mph: 6.2
    direction degrees: 152
    direction cardinal: SSE
    explanation: 10 km/h (6 mph) from 152° (SSE)

date: 2026-08-12
day index: 7
strike score:
  final score: 88
  category: Firing
  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 197° is 8° off optimal 205°, workable but not ideal.
    swell size:
      score: 22
      out of: 25
      explanation: Good size: 2.1m is within 15% of ideal 1.8m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 15s is at or above ideal 14s. Long-period groundswell with maximum power.
    wind:
      score: 25
      out of: 25
      explanation: Moderate offshore: 11 km/h from 125° (SE). Still grooming but noticeable wind.
  adjustments:
    wind history:
      adjustment: 6
      groomed: true
      morning sickness: false
      explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
    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: Excellent conditions at Shipwrecks. The 2.1m swell from 197° aligns well with the spot, and offshore winds are grooming the face. Worth planning a trip around this.
conditions:
  swell:
    height m: 2.1
    height ft: 6.9
    direction degrees: 197
    direction cardinal: SSW
    period s: 15
    explanation: 2.1m (6.9ft) swell from 197° (SSW) at 15s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 125
    direction cardinal: SE
    explanation: 11 km/h (7 mph) from 125° (SE)

date: 2026-08-13
day index: 8
strike score:
  final score: 79
  category: Good
  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 196° is 9° off optimal 205°, workable but not ideal.
    swell size:
      score: 10
      out of: 25
      explanation: Too big: 2.7m exceeds maximum 2.4m. Risk of closeouts.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 17s is 121% of ideal 14s. Clean, powerful groundswell.
    wind:
      score: 24
      out of: 25
      explanation: Moderate offshore: 13 km/h from 125° (SE). Still grooming but noticeable wind.
  adjustments:
    wind history:
      adjustment: 6
      groomed: true
      morning sickness: false
      explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
    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 Shipwrecks. 2.7m swell from 196° with manageable wind. Solid session guaranteed.
conditions:
  swell:
    height m: 2.7
    height ft: 8.9
    direction degrees: 196
    direction cardinal: SSW
    period s: 17
    explanation: 2.7m (8.9ft) swell from 196° (SSW) at 17s period
  wind:
    speed kmh: 13
    speed mph: 8.1
    direction degrees: 125
    direction cardinal: SE
    explanation: 13 km/h (8 mph) from 125° (SE)

date: 2026-08-14
day index: 9
strike score:
  final score: 93
  category: Firing
  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 200° is 5° off optimal 205°, still within prime range.
    swell size:
      score: 22
      out of: 25
      explanation: Good size: 2.1m is within 15% of ideal 1.8m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 16s is at or above ideal 14s. Long-period groundswell with maximum power.
    wind:
      score: 24
      out of: 25
      explanation: Moderate offshore: 12 km/h from 141° (SE). Still grooming but noticeable wind.
  adjustments:
    wind history:
      adjustment: 6
      groomed: true
      morning sickness: false
      explanation: +6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
    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: Excellent conditions at Shipwrecks. The 2.1m swell from 200° aligns well with the spot, and offshore winds are grooming the face. Worth planning a trip around this.
conditions:
  swell:
    height m: 2.1
    height ft: 6.9
    direction degrees: 200
    direction cardinal: SSW
    period s: 16
    explanation: 2.1m (6.9ft) swell from 200° (SSW) at 16s period
  wind:
    speed kmh: 12
    speed mph: 7.5
    direction degrees: 141
    direction cardinal: SE
    explanation: 12 km/h (7 mph) from 141° (SE)

Strike Mission
type: Organization