Surf Forecast for Duranbah
type: Dataset
description: 10-day surf forecast with Strike Scores for Duranbah, Gold Coast, Australia
about: Duranbah
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -28.1667
    longitude: 153.55
  description: Duranbah (D-Bah) is the Gold Coast's swell magnet—an east-facing beach break that picks up energy when everywhere else is flat. The wave produces punchy A-frame peaks that offer fast, hollow barrels and high-performance walls ideal for airs. The Tweed River training wall creates a permanent sandbank setup, making D-Bah more consistent than other beach breaks. It's crowded, competitive, and a proving ground for young pros. When the points are small, D-Bah is often the best option for quality waves.
summary:
  best day:
    date: 2026-08-05
    score: 72
    category: Good
    explanation: Best day in the forecast: 2026-08-05 with a score of 72/100 (Good)
  firing days count: 0
  overall recommendation: Marginal conditions: Average score 57/100. Surfable but not special. Consider other spots.
forecasts:
  date: 2026-08-05
  day index: 0
  strike score:
    final score: 72
    category: Good
    category emoji: ✅
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 22
        out of: 25
        explanation: Good alignment: Swell from 94° is 4° off optimal 90°, still within prime range.
      swell size:
        score: 14
        out of: 25
        explanation: Marginal size: 1.0m is 0.3m from ideal 1.3m.
      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: 10 km/h from 326° (NW). Destroying wave quality. Offshore range: 210°-290°.
    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 Duranbah. 1.0m swell from 94° with manageable wind. Solid session guaranteed.
  conditions:
    swell:
      height m: 1
      height ft: 3.3
      direction degrees: 94
      direction cardinal: E
      period s: 11
      explanation: 1.0m (3.3ft) swell from 94° (E) at 11s period
    wind:
      speed kmh: 10
      speed mph: 6.2
      direction degrees: 326
      direction cardinal: NW
      explanation: 10 km/h (6 mph) from 326° (NW)
forecasts:
  date: 2026-08-06
  day index: 1
  strike score:
    final score: 52
    category: Fair
    category emoji: 😐
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 21
        out of: 25
        explanation: Good alignment: Swell from 85° is 5° off optimal 90°, still within prime range.
      swell size:
        score: 10
        out of: 25
        explanation: Marginal size: 0.8m is 0.5m from ideal 1.3m.
      swell period:
        score: 6
        out of: 25
        explanation: Moderate period: 8s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 18
        out of: 25
        explanation: Onshore/cross-shore: 6 km/h from 149° (SSE). Destroying wave quality. Offshore range: 210°-290°.
    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 Duranbah. The 0.8m swell from 85° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
  conditions:
    swell:
      height m: 0.8
      height ft: 2.6
      direction degrees: 85
      direction cardinal: E
      period s: 8
      explanation: 0.8m (2.6ft) swell from 85° (E) at 8s period
    wind:
      speed kmh: 6
      speed mph: 3.7
      direction degrees: 149
      direction cardinal: SSE
      explanation: 6 km/h (4 mph) from 149° (SSE)
    secondary swell:
      height m: 0.4
      direction degrees: 106
      direction cardinal: ESE
      period s: 8
forecasts:
  date: 2026-08-07
  day index: 2
  strike score:
    final score: 57
    category: Fair
    category emoji: 😐
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 20
        out of: 25
        explanation: Good alignment: Swell from 83° is 7° off optimal 90°, still within prime range.
      swell size:
        score: 11
        out of: 25
        explanation: Marginal size: 0.9m is 0.4m from ideal 1.3m.
      swell period:
        score: 6
        out of: 25
        explanation: Moderate period: 8s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 17
        out of: 25
        explanation: Onshore/cross-shore: 7 km/h from 133° (SE). Destroying wave quality. Offshore range: 210°-290°.
    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 Duranbah. The 0.9m swell from 83° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
  conditions:
    swell:
      height m: 0.9
      height ft: 3.0
      direction degrees: 83
      direction cardinal: E
      period s: 8
      explanation: 0.9m (3.0ft) swell from 83° (E) at 8s period
    wind:
      speed kmh: 7
      speed mph: 4.3
      direction degrees: 133
      direction cardinal: SE
      explanation: 7 km/h (4 mph) from 133° (SE)
forecasts:
  date: 2026-08-08
  day index: 3
  strike score:
    final score: 59
    category: Fair
    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 83° is 7° off optimal 90°, still within prime range.
      swell size:
        score: 12
        out of: 25
        explanation: Marginal size: 1.0m is 0.3m from ideal 1.3m.
      swell period:
        score: 8
        out of: 25
        explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    summary: Surfable but not special at Duranbah. The 1.0m swell from 83° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
provider: Strike Mission
date published: 2026-08-05T03:09:17.880Z
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)

score: 14
out of: 25
explanation: Onshore/cross-shore: 8 km/h from 156° (SSE). Destroying wave quality. Offshore range: 210°-290°.

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
  height ft: 3.3
  direction degrees: 83
  direction cardinal: E
  period s: 9
  explanation: 1.0m (3.3ft) swell from 83° (E) at 9s period
wind:
  speed kmh: 8
  speed mph: 5.0
  direction degrees: 156
  direction cardinal: SSE
  explanation: 8 km/h (5 mph) from 156° (SSE)

date: 2026-08-09
day index: 4
strike score:
  final score: 58
  category: Fair
  category emoji: 😐
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 20
      out of: 25
      explanation: Good alignment: Swell from 84° is 6° off optimal 90°, still within prime range.
    swell size:
      score: 17
      out of: 25
      explanation: Marginal size: 1.3m is 0.0m from ideal 1.3m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 9
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 354° (N). Destroying wave quality. Offshore range: 210°-290°.
  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 Duranbah. The 1.3m swell from 84° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 1.3
    height ft: 4.3
    direction degrees: 84
    direction cardinal: E
    period s: 10
    explanation: 1.3m (4.3ft) swell from 84° (E) at 10s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 354
    direction cardinal: N
    explanation: 11 km/h (7 mph) from 354° (N)

date: 2026-08-10
day index: 5
strike score:
  final score: 66
  category: Good
  category emoji: ✅
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 17
      out of: 25
      explanation: Moderate alignment: Swell from 79° is 11° off optimal 90°, workable but not ideal.
    swell size:
      score: 12
      out of: 25
      explanation: Marginal size: 1.0m is 0.3m from ideal 1.3m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 25
      out of: 25
      explanation: Light offshore: 9 km/h from 268° (W). Grooming the wave face beautifully.
  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 Duranbah. 1.0m swell from 79° with manageable wind. Solid session guaranteed.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 79
    direction cardinal: E
    period s: 10
    explanation: 1.0m (3.3ft) swell from 79° (E) at 10s period
  wind:
    speed kmh: 9
    speed mph: 5.6
    direction degrees: 268
    direction cardinal: W
    explanation: 9 km/h (6 mph) from 268° (W)
  secondary swell:
    height m: 0.6
    direction degrees: 21
    direction cardinal: NNE
    period s: 4
  windswell:
    height m: 0.4
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-11
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: 17
      out of: 25
      explanation: Moderate alignment: Swell from 78° is 12° off optimal 90°, workable but not ideal.
    swell size:
      score: 11
      out of: 25
      explanation: Marginal size: 0.9m is 0.4m from ideal 1.3m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 8
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 13° (NNE). Destroying wave quality. Offshore range: 210°-290°.
  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 Duranbah. The 0.9m swell from 78° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 0.9
    height ft: 3.0
    direction degrees: 78
    direction cardinal: ENE
    period s: 10
    explanation: 0.9m (3.0ft) swell from 78° (ENE) at 10s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 13
    direction cardinal: NNE
    explanation: 11 km/h (7 mph) from 13° (NNE)

date: 2026-08-12
day index: 7
strike score:
  final score: 58
  category: Fair
  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 80° is 10° off optimal 90°, workable but not ideal.
    swell size:
      score: 10
      out of: 25
      explanation: Marginal size: 0.8m is 0.5m from ideal 1.3m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 24
      out of: 25
      explanation: Moderate offshore: 14 km/h from 264° (W). 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: Surfable but not special at Duranbah. The 0.8m swell from 80° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 0.8
    height ft: 2.6
    direction degrees: 80
    direction cardinal: E
    period s: 10
    explanation: 0.8m (2.6ft) swell from 80° (E) at 10s period
  wind:
    speed kmh: 14
    speed mph: 8.7
    direction degrees: 264
    direction cardinal: W
    explanation: 14 km/h (9 mph) from 264° (W)
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-13
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: 19
      out of: 25
      explanation: Moderate alignment: Swell from 81° is 9° off optimal 90°, workable but not ideal.
    swell size:
      score: 8
      out of: 25
      explanation: Marginal size: 0.6m is 0.7m from ideal 1.3m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 10s meets minimum 8s but below ideal 12s. Some groundswell energy present.
    wind:
      score: 9
      out of: 25
      explanation: Onshore/cross-shore: 12 km/h from 167° (SSE). Destroying wave quality. Offshore range: 210°-290°.
  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: Surfable but not special at Duranbah. The 0.6m swell from 81° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 0.6
    height ft: 2.0
    direction degrees: 81
    direction cardinal: E
    period s: 10
    explanation: 0.6m (2.0ft) swell from 81° (E) at 10s period
  wind:
    speed kmh: 12
    speed mph: 7.5
    direction degrees: 167
    direction cardinal: SSE
    explanation: 12 km/h (7 mph) from 167° (SSE)
  windswell:
    height m: 0.4
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-14
day index: 9
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: 19
      out of: 25
      explanation: Moderate alignment: Swell from 98° is 8° off optimal 90°, workable but not ideal.
    swell size:
      score: 8
      out of: 25
      explanation: Marginal size: 0.6m is 0.7m from ideal 1.3m.
    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: 13 km/h from 177° (S). Destroying wave quality. Offshore range: 210°-290°.
  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: Surfable but not special at Duranbah. The 0.6m swell from 98° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 0.6
    height ft: 2.0
    direction degrees: 98
    direction cardinal: E
    period s: 11
    explanation: 0.6m (2.0ft) swell from 98° (E) at 11s period
  wind:
    speed kmh: 13
    speed mph: 8.1
    direction degrees: 177
    direction cardinal: S
    explanation: 13 km/h (8 mph) from 177° (S)
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization