Surf Forecast for Copacabana Posto 5
type: Dataset
description: 10-day surf forecast with Strike Scores for Copacabana Posto 5, Rio de Janeiro, RJ, Brazil
about: Copacabana Posto 5
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -22.9667
    longitude: -43.1833
  description: Copacabana Posto 5 is one of the best surf spots along Rio's most famous beach, producing heavy shorebreak barrels when conditions align. The wave is fast and punishing, but the iconic setting and urban convenience make it worth the battle. Best early morning before crowds descend.
summary:
  best day:
    date: 2026-08-06
    score: 47
    category: Fair
    explanation: Best day in the forecast: 2026-08-06 with a score of 47/100 (Fair)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 34/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-05
  day index: 0
  strike score:
    final score: 42
    category: Poor
    category emoji: 💤
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 0
        out of: 25
        explanation: No alignment: Swell from 181° is outside workable range 90°-157°. Wrong swell direction for this spot.
      swell size:
        score: 9
        out of: 25
        explanation: Marginal size: 1.0m is 0.7m from ideal 1.7m.
      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: 21
        out of: 25
        explanation: Light offshore: 9 km/h from 29° (NNE). 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: Poor conditions at Copacabana Posto 5. Either swell direction (181°), size (1.0m), or wind (9 km/h from 29°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1
      height ft: 3.3
      direction degrees: 181
      direction cardinal: S
      period s: 13
      explanation: 1.0m (3.3ft) swell from 181° (S) at 13s period
    wind:
      speed kmh: 9
      speed mph: 5.6
      direction degrees: 29
      direction cardinal: NNE
      explanation: 9 km/h (6 mph) from 29° (NNE)
    secondary swell:
      height m: 0.6
      direction degrees: 113
      direction cardinal: ESE
      period s: 5
forecasts:
  date: 2026-08-06
  day index: 1
  strike score:
    final score: 47
    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 106° is 6° off optimal 112°, still within prime range.
      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: 8
        out of: 25
        explanation: Moderate period: 9s meets minimum 8s but below ideal 12s. Some groundswell energy present.
      wind:
        score: 25
        out of: 25
        explanation: Light offshore: 9 km/h from 6° (N). 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: Surfable but not special at Copacabana Posto 5. The 0.8m swell from 106° 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: 106
      direction cardinal: ESE
      period s: 9
      explanation: 0.8m (2.6ft) swell from 106° (ESE) at 9s period
    wind:
      speed kmh: 9
      speed mph: 5.6
      direction degrees: 6
      direction cardinal: N
      explanation: 9 km/h (6 mph) from 6° (N)
    secondary swell:
      height m: 0.5
      direction degrees: 173
      direction cardinal: S
      period s: 9
forecasts:
  date: 2026-08-07
  day index: 2
  strike score:
    final score: 30
    category: Poor
    category emoji: 💤
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 19
        out of: 25
        explanation: Moderate alignment: Swell from 104° is 8° off optimal 112°, workable but not ideal.
      swell size:
        score: 2
        out of: 25
        explanation: Too small: 0.6m 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: 14
        out of: 25
        explanation: Moderate offshore: 13 km/h from 324° (NW). 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: Poor conditions at Copacabana Posto 5. Either swell direction (104°), size (0.6m), or wind (13 km/h from 324°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 0.6
      height ft: 2.0
      direction degrees: 104
      direction cardinal: ESE
      period s: 10
      explanation: 0.6m (2.0ft) swell from 104° (ESE) at 10s period
    wind:
      speed kmh: 13
      speed mph: 8.1
      direction degrees: 324
      direction cardinal: NW
      explanation: 13 km/h (8 mph) from 324° (NW)
    secondary swell:
      height m: 0.4
      direction degrees: 168
      direction cardinal: SSE
      period s: 9
forecasts:
  date: 2026-08-08
  day index: 3
  strike score:
    final score: 21
    category: Poor
    category emoji: 💤
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    summary: Poor conditions at Copacabana Posto 5. Either swell direction (180°), size (1.1m), or wind (9 km/h from 107°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-05T03:16:07.230Z
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: 0
  out of: 25
  explanation: No alignment: Swell from 180° is outside workable range 90°-157°. Wrong swell direction for this spot.
swell size:
  score: 10
  out of: 25
  explanation: Marginal size: 1.1m is 0.6m from ideal 1.7m.
swell period:
  score: 14
  out of: 25
  explanation: Moderate period: 10s 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 107° (ESE). Destroying wave quality. Offshore range: 315°-45°.

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: 1.1
  height ft: 3.6
  direction degrees: 180
  direction cardinal: S
  period s: 10
  explanation: 1.1m (3.6ft) swell from 180° (S) at 10s period
wind:
  speed kmh: 9
  speed mph: 5.6
  direction degrees: 107
  direction cardinal: ESE
  explanation: 9 km/h (6 mph) from 107° (ESE)
secondary swell:
  height m: 0.4
  direction degrees: 172
  direction cardinal: S
  period s: 8

date: 2026-08-09
day index: 4
strike score:
  final score: 23
  category: Poor
  category emoji: 💤
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 0
      out of: 25
      explanation: No alignment: Swell from 180° is outside workable range 90°-157°. Wrong swell direction for this spot.
    swell size:
      score: 17
      out of: 25
      explanation: Marginal size: 1.7m is 0.0m from ideal 1.7m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 14s is at or above ideal 12s. Long-period groundswell with maximum power.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 304° (NW). Destroying wave quality. Offshore range: 315°-45°.
  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 Copacabana Posto 5. Either swell direction (180°), size (1.7m), or wind (17 km/h from 304°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.7
    height ft: 5.6
    direction degrees: 180
    direction cardinal: S
    period s: 14
    explanation: 1.7m (5.6ft) swell from 180° (S) at 14s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 304
    direction cardinal: NW
    explanation: 17 km/h (11 mph) from 304° (NW)
  secondary swell:
    height m: 0.5
    direction degrees: 101
    direction cardinal: E
    period s: 5

date: 2026-08-10
day index: 5
strike score:
  final score: 22
  category: Poor
  category emoji: 💤
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 0
      out of: 25
      explanation: No alignment: Swell from 186° is outside workable range 90°-157°. Wrong swell direction for this spot.
    swell size:
      score: 14
      out of: 25
      explanation: Marginal size: 1.5m is 0.2m from ideal 1.7m.
    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: 10 km/h from 140° (SE). Destroying wave quality. Offshore range: 315°-45°.
  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 Copacabana Posto 5. Either swell direction (186°), size (1.5m), or wind (10 km/h from 140°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.5
    height ft: 4.9
    direction degrees: 186
    direction cardinal: S
    period s: 10
    explanation: 1.5m (4.9ft) swell from 186° (S) at 10s 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: 0.7
    direction degrees: 175
    direction cardinal: S
    period s: 11

date: 2026-08-11
day index: 6
strike score:
  final score: 16
  category: Poor
  category emoji: 💤
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 0
      out of: 25
      explanation: No alignment: Swell from 191° is outside workable range 90°-157°. Wrong swell direction for this spot.
    swell size:
      score: 11
      out of: 25
      explanation: Too big: 2.8m exceeds maximum 2.5m. Risk of closeouts.
    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: 0
      out of: 25
      explanation: Onshore/cross-shore: 19 km/h from 190° (S). Destroying wave quality. Offshore range: 315°-45°.
  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 Copacabana Posto 5. Either swell direction (191°), size (2.8m), or wind (19 km/h from 190°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 2.8
    height ft: 9.2
    direction degrees: 191
    direction cardinal: S
    period s: 12
    explanation: 2.8m (9.2ft) swell from 191° (S) at 12s period
  wind:
    speed kmh: 19
    speed mph: 11.8
    direction degrees: 190
    direction cardinal: S
    explanation: 19 km/h (12 mph) from 190° (S)
  secondary swell:
    height m: 0.4
    direction degrees: 125
    direction cardinal: SE
    period s: 7
  windswell:
    height m: 0.6
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-12
day index: 7
strike score:
  final score: 44
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 0
      out of: 25
      explanation: No alignment: Swell from 193° is outside workable range 90°-157°. Wrong swell direction for this spot.
    swell size:
      score: 19
      out of: 25
      explanation: Marginal size: 2.3m is 0.6m from ideal 1.7m.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 11s is 92% of ideal 12s. Clean, powerful groundswell.
    wind:
      score: 16
      out of: 25
      explanation: Onshore/cross-shore: 6 km/h from 165° (SSE). Destroying wave quality. Offshore range: 315°-45°.
  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 Copacabana Posto 5. Either swell direction (193°), size (2.3m), or wind (6 km/h from 165°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 2.3
    height ft: 7.5
    direction degrees: 193
    direction cardinal: SSW
    period s: 11
    explanation: 2.3m (7.5ft) swell from 193° (SSW) at 11s period
  wind:
    speed kmh: 6
    speed mph: 3.7
    direction degrees: 165
    direction cardinal: SSE
    explanation: 6 km/h (4 mph) from 165° (SSE)

date: 2026-08-13
day index: 8
strike score:
  final score: 46
  category: Fair
  category emoji: 😐
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 0
      out of: 25
      explanation: No alignment: Swell from 186° is outside workable range 90°-157°. Wrong swell direction for this spot.
    swell size:
      score: 23
      out of: 25
      explanation: Good size: 2.1m is within 15% of ideal 1.7m.
    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: 13
      out of: 25
      explanation: Onshore/cross-shore: 10 km/h from 81° (E). Destroying wave quality. Offshore range: 315°-45°.
  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 Copacabana Posto 5. The 2.1m swell from 186° 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: 186
    direction cardinal: S
    period s: 13
    explanation: 2.1m (6.9ft) swell from 186° (S) at 13s period
  wind:
    speed kmh: 10
    speed mph: 6.2
    direction degrees: 81
    direction cardinal: E
    explanation: 10 km/h (6 mph) from 81° (E)
  secondary swell:
    height m: 0.7
    direction degrees: 165
    direction cardinal: SSE
    period s: 8

date: 2026-08-14
day index: 9
strike score:
  final score: 46
  category: Fair
  category emoji: 😐
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 0
      out of: 25
      explanation: No alignment: Swell from 172° is outside workable range 90°-157°. Wrong swell direction for this spot.
    swell size:
      score: 21
      out of: 25
      explanation: Good size: 1.9m is within 15% of ideal 1.7m.
    swell period:
      score: 25
      out of: 25
      explanation: Perfect period: 14s is at or above ideal 12s. Long-period groundswell with maximum power.
    wind:
      score: 14
      out of: 25
      explanation: Onshore/cross-shore: 8 km/h from 93° (E). Destroying wave quality. Offshore range: 315°-45°.
  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 Copacabana Posto 5. The 1.9m swell from 172° 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: 172
    direction cardinal: S
    period s: 14
    explanation: 1.9m (6.2ft) swell from 172° (S) at 14s period
  wind:
    speed kmh: 8
    speed mph: 5.0
    direction degrees: 93
    direction cardinal: E
    explanation: 8 km/h (5 mph) from 93° (E)

Strike Mission
type: Organization