Surf Forecast for Rifles
type: Dataset
description: 10-day surf forecast with Strike Scores for Rifles, Playgrounds, Mentawais, Indonesia
about: Rifles
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -1.85
    longitude: 98.993
  description: Rifles is pure Mentawai magic—a flawless right-hand barrel that can run for 200+ meters when the swell angle is dialed. The wave requires a precise South swell direction to connect all sections, and when it does, it's arguably the most perfect right-hander on Earth. The tube is round, the water is crystal clear, and the rides are seemingly endless. Located in the Playgrounds region of the Mentawais, Rifles is the crown jewel that boat charter dreams are made of.
summary:
  best day:
    date: 2026-08-07
    score: 85
    category: Firing
    explanation: Best day in the forecast: 2026-08-07 with a score of 85/100 (Firing)
  firing days count: 1
  firing days:
    date: 2026-08-07
    score: 85
  overall recommendation: Moderate recommendation: Rifles has 1 Firing day(s) and 3 Good day(s). Worth considering.
forecasts:
  date: 2026-08-05
  day index: 0
  strike score:
    final score: 52
    category: Fair
    category emoji: 😐
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 20
        out of: 25
        explanation: Good alignment: Swell from 193° is 7° off optimal 200°, still within prime range.
      swell size:
        score: 10
        out of: 25
        explanation: Marginal size: 1.9m is 1.1m from ideal 3.0m.
      swell period:
        score: 14
        out of: 25
        explanation: Moderate period: 15s meets minimum 14s but below ideal 16s. Some groundswell energy present.
      wind:
        score: 13
        out of: 25
        explanation: Onshore/cross-shore: 10 km/h from 326° (NW). Destroying wave quality. Offshore range: 0°-90°.
    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 Rifles. The 1.9m swell from 193° 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: 193
      direction cardinal: SSW
      period s: 15
      explanation: 1.9m (6.2ft) swell from 193° (SSW) at 15s period
    wind:
      speed kmh: 10
      speed mph: 6.2
      direction degrees: 326
      direction cardinal: NW
      explanation: 10 km/h (6 mph) from 326° (NW)
    secondary swell:
      height m: 1.2
      direction degrees: 240
      direction cardinal: WSW
      period s: 13
forecasts:
  date: 2026-08-06
  day index: 1
  strike score:
    final score: 72
    category: Good
    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 198° is 2° off optimal 200°, still within prime range.
      swell size:
        score: 15
        out of: 25
        explanation: Marginal size: 2.7m is 0.3m from ideal 3.0m.
      swell period:
        score: 25
        out of: 25
        explanation: Perfect period: 17s is at or above ideal 16s. Long-period groundswell with maximum power.
      wind:
        score: 14
        out of: 25
        explanation: Onshore/cross-shore: 8 km/h from 309° (NW). Destroying wave quality. Offshore range: 0°-90°.
    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 Rifles. 2.7m swell from 198° with manageable wind. Solid session guaranteed.
  conditions:
    swell:
      height m: 2.7
      height ft: 8.9
      direction degrees: 198
      direction cardinal: SSW
      period s: 17
      explanation: 2.7m (8.9ft) swell from 198° (SSW) at 17s period
    wind:
      speed kmh: 8
      speed mph: 5.0
      direction degrees: 309
      direction cardinal: NW
      explanation: 8 km/h (5 mph) from 309° (NW)
    secondary swell:
      height m: 1.1
      direction degrees: 290
      direction cardinal: WNW
      period s: 6
forecasts:
  date: 2026-08-07
  day index: 2
  strike score:
    final score: 85
    category: Firing
    category emoji: 🔥
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 22
        out of: 25
        explanation: Good alignment: Swell from 196° is 4° off optimal 200°, still within prime range.
      swell size:
        score: 15
        out of: 25
        explanation: Marginal size: 2.7m is 0.3m from ideal 3.0m.
      swell period:
        score: 25
        out of: 25
        explanation: Perfect period: 16s is at or above ideal 16s. Long-period groundswell with maximum power.
      wind:
        score: 25
        out of: 25
        explanation: Light offshore: 4 km/h from 86° (E). 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: Excellent conditions at Rifles. The 2.7m swell from 196° aligns well with the spot, and light offshore winds are grooming the face. Worth planning a trip around this.
  conditions:
    swell:
      height m: 2.7
      height ft: 8.9
      direction degrees: 196
      direction cardinal: SSW
      period s: 16
      explanation: 2.7m (8.9ft) swell from 196° (SSW) at 16s period
    wind:
      speed kmh: 4
      speed mph: 2.5
      direction degrees: 86
      direction cardinal: E
      explanation: 4 km/h (2 mph) from 86° (E)
    secondary swell:
      height m: 0.8
      direction degrees: 253
      direction cardinal: WSW
      period s: 10
forecasts:
  date: 2026-08-08
  day index: 3
  strike score:
    final score: 70
    category: Good
    category emoji: ✅
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    summary: Good surfable conditions at Rifles. 2.8m swell from 192° with manageable wind. Solid session guaranteed.
provider: Strike Mission
date published: 2026-08-05T00:29:51.762Z
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)

swell direction:
  score: 19
  out of: 25
  explanation: Moderate alignment: Swell from 192° is 8° off optimal 200°, workable but not ideal.
swell size:
  score: 16
  out of: 25
  explanation: Marginal size: 2.8m is 0.2m from ideal 3.0m.
swell period:
  score: 25
  out of: 25
  explanation: Perfect period: 16s is at or above ideal 16s. Long-period groundswell with maximum power.
wind:
  score: 13
  out of: 25
  explanation: Onshore/cross-shore: 10 km/h from 127° (SE). Destroying wave quality. Offshore range: 0°-90°.

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: 2.8
  height ft: 9.2
  direction degrees: 192
  direction cardinal: SSW
  period s: 16
  explanation: 2.8m (9.2ft) swell from 192° (SSW) at 16s period
wind:
  speed kmh: 10
  speed mph: 6.2
  direction degrees: 127
  direction cardinal: SE
  explanation: 10 km/h (6 mph) from 127° (SE)
secondary swell:
  height m: 0.8
  direction degrees: 275
  direction cardinal: W
  period s: 7

date: 2026-08-09
day index: 4
strike score:
  final score: 49
  category: Fair
  category emoji: 😐
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 19
      out of: 25
      explanation: Moderate alignment: Swell from 191° is 9° off optimal 200°, workable but not ideal.
    swell size:
      score: 14
      out of: 25
      explanation: Marginal size: 2.6m is 0.4m from ideal 3.0m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 16s is at or above ideal 16s. Long-period groundswell with maximum power.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 15 km/h from 155° (SSE). Destroying wave quality. Offshore range: 0°-90°.
  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 Rifles. The 2.6m swell from 191° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 2.6
    height ft: 8.5
    direction degrees: 191
    direction cardinal: S
    period s: 16
    explanation: 2.6m (8.5ft) swell from 191° (S) at 16s period
  wind:
    speed kmh: 15
    speed mph: 9.3
    direction degrees: 155
    direction cardinal: SSE
    explanation: 15 km/h (9 mph) from 155° (SSE)
  secondary swell:
    height m: 0.9
    direction degrees: 175
    direction cardinal: S
    period s: 6
  windswell:
    height m: 0.7
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-10
day index: 5
strike score:
  final score: 48
  category: Fair
  category emoji: 😐
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 16
      out of: 25
      explanation: Moderate alignment: Swell from 187° is 13° off optimal 200°, workable but not ideal.
    swell size:
      score: 13
      out of: 25
      explanation: Marginal size: 2.5m is 0.5m from ideal 3.0m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 15s meets minimum 14s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 9
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 159° (SSE). Destroying wave quality. Offshore range: 0°-90°.
  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 Rifles. The 2.5m swell from 187° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 2.5
    height ft: 8.2
    direction degrees: 187
    direction cardinal: S
    period s: 15
    explanation: 2.5m (8.2ft) swell from 187° (S) at 15s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 159
    direction cardinal: SSE
    explanation: 11 km/h (7 mph) from 159° (SSE)
  secondary swell:
    height m: 1.1
    direction degrees: 186
    direction cardinal: S
    period s: 18
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-11
day index: 6
strike score:
  final score: 66
  category: Good
  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 182° is 18° off optimal 200°, workable but not ideal.
    swell size:
      score: 20
      out of: 25
      explanation: Good size: 3.3m is within 15% of ideal 3.0m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 17s is at or above ideal 16s. Long-period groundswell with maximum power.
    wind:
      score: 11
      out of: 25
      explanation: Onshore/cross-shore: 11 km/h from 128° (SE). Destroying wave quality. Offshore range: 0°-90°.
  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 Rifles. 3.3m swell from 182° with manageable wind. Solid session guaranteed.
conditions:
  swell:
    height m: 3.3
    height ft: 10.8
    direction degrees: 182
    direction cardinal: S
    period s: 17
    explanation: 3.3m (10.8ft) swell from 182° (S) at 17s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 128
    direction cardinal: SE
    explanation: 11 km/h (7 mph) from 128° (SE)
  secondary swell:
    height m: 0.4
    direction degrees: 276
    direction cardinal: W
    period s: 10

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: 13
      out of: 25
      explanation: Moderate alignment: Swell from 180° is 20° off optimal 200°, workable but not ideal.
    swell size:
      score: 18
      out of: 25
      explanation: Marginal size: 3.1m is 0.1m from ideal 3.0m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 16s is at or above ideal 16s. Long-period groundswell with maximum power.
    wind:
      score: 7
      out of: 25
      explanation: Onshore/cross-shore: 12 km/h from 138° (SE). Destroying wave quality. Offshore range: 0°-90°.
  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 Rifles. The 3.1m swell from 180° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
conditions:
  swell:
    height m: 3.1
    height ft: 10.2
    direction degrees: 180
    direction cardinal: S
    period s: 16
    explanation: 3.1m (10.2ft) swell from 180° (S) at 16s period
  wind:
    speed kmh: 12
    speed mph: 7.5
    direction degrees: 138
    direction cardinal: SE
    explanation: 12 km/h (7 mph) from 138° (SE)
  windswell:
    height m: 0.4
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-13
day index: 8
strike score:
  final score: 42
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 11
      out of: 25
      explanation: Moderate alignment: Swell from 175° is 25° off optimal 200°, workable but not ideal.
    swell size:
      score: 13
      out of: 25
      explanation: Marginal size: 2.5m is 0.5m from ideal 3.0m.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 14s meets minimum 14s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 13
      out of: 25
      explanation: Onshore/cross-shore: 10 km/h from 134° (SE). Destroying wave quality. Offshore range: 0°-90°.
  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 Rifles. Either swell direction (175°), size (2.5m), or wind (10 km/h from 134°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 2.5
    height ft: 8.2
    direction degrees: 175
    direction cardinal: S
    period s: 14
    explanation: 2.5m (8.2ft) swell from 175° (S) at 14s period
  wind:
    speed kmh: 10
    speed mph: 6.2
    direction degrees: 134
    direction cardinal: SE
    explanation: 10 km/h (6 mph) from 134° (SE)
  secondary swell:
    height m: 1.2
    direction degrees: 183
    direction cardinal: S
    period s: 15

date: 2026-08-14
day index: 9
strike score:
  final score: 43
  category: Poor
  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 181° is 19° off optimal 200°, workable but not ideal.
    swell size:
      score: 10
      out of: 25
      explanation: Marginal size: 2.0m is 1.0m from ideal 3.0m.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 15s meets minimum 14s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 11
      out of: 25
      explanation: Onshore/cross-shore: 10 km/h from 140° (SE). Destroying wave quality. Offshore range: 0°-90°.
  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 Rifles. Either swell direction (181°), size (2.0m), or wind (10 km/h from 140°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 2
    height ft: 6.6
    direction degrees: 181
    direction cardinal: S
    period s: 15
    explanation: 2.0m (6.6ft) swell from 181° (S) at 15s period
  wind:
    speed kmh: 10
    speed mph: 6.2
    direction degrees: 140
    direction cardinal: SE
    explanation: 10 km/h (6 mph) from 140° (SE)
  secondary swell:
    height m: 1.2
    direction degrees: 170
    direction cardinal: S
    period s: 16
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization