Surf Forecast for Tongo Reef
type: Dataset
description: 10-day surf forecast with Strike Scores for Tongo Reef, San Cristobal, Galapagos, Ecuador
about: Tongo Reef
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -0.9333
    longitude: -89.6
  description: Tongo Reef is the crown jewel of Galapagos surfing - a world-class left reef break on San Cristobal Island that hosted the 2022 WSL QS 1000. The wave offers three distinct sections catering to all levels, from the mellow Bajo to the hollow Pico. Surf with sea lions in one of the planet's most unique wildlife sanctuaries.
summary:
  best day:
    date: 2026-08-13
    score: 44
    category: Poor
    explanation: Best day in the forecast: 2026-08-13 with a score of 44/100 (Poor)
  firing days count: 0
  overall recommendation: Poor conditions overall: Average score 26/100. Look for spots with better forecasts.
forecasts:
  date: 2026-08-04
  day index: 0
  strike score:
    final score: 0
    category: Poor
    category emoji: 💤
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 6
        out of: 25
        explanation: Poor alignment: Swell from 157° is 45° off optimal 202°, barely within workable range 180°-225°.
      swell size:
        score: 10
        out of: 25
        explanation: Marginal size: 1.5m is 0.6m from ideal 2.1m.
      swell period:
        score: 2
        out of: 25
        explanation: Short period: 9s is below minimum 12s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 20 km/h from 168° (SSE). Destroying wave quality. Offshore range: 90°-135°.
    adjustments:
      wind history:
        adjustment: -4
        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 Tongo Reef. Either swell direction (157°), size (1.5m), or wind (20 km/h from 168°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.5
      height ft: 4.9
      direction degrees: 157
      direction cardinal: SSE
      period s: 9
      explanation: 1.5m (4.9ft) swell from 157° (SSE) at 9s period
    wind:
      speed kmh: 20
      speed mph: 12.4
      direction degrees: 168
      direction cardinal: SSE
      explanation: 20 km/h (12 mph) from 168° (SSE)
    windswell:
      height m: 0.5
      period s: 3
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-05
  day index: 1
  strike score:
    final score: 6
    category: Poor
    category emoji: 💤
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 7
        out of: 25
        explanation: Poor alignment: Swell from 163° is 39° off optimal 202°, barely within workable range 180°-225°.
      swell size:
        score: 9
        out of: 25
        explanation: Marginal size: 1.3m is 0.8m from ideal 2.1m.
      swell period:
        score: 2
        out of: 25
        explanation: Short period: 9s is below minimum 12s. Windswell-dominated (choppy, weak waves).
      wind:
        score: 1
        out of: 25
        explanation: Onshore/cross-shore: 16 km/h from 169° (S). Destroying wave quality. Offshore range: 90°-135°.
    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 Tongo Reef. Either swell direction (163°), size (1.3m), or wind (16 km/h from 169°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.3
      height ft: 4.3
      direction degrees: 163
      direction cardinal: SSE
      period s: 9
      explanation: 1.3m (4.3ft) swell from 163° (SSE) at 9s period
    wind:
      speed kmh: 16
      speed mph: 9.9
      direction degrees: 169
      direction cardinal: S
      explanation: 16 km/h (10 mph) from 169° (S)
    secondary swell:
      height m: 0.5
      direction degrees: 217
      direction cardinal: SW
      period s: 12
    windswell:
      height m: 0.3
      period s: 2
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-06
  day index: 2
  strike score:
    final score: 35
    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 193° is 9° off optimal 202°, workable but not ideal.
      swell size:
        score: 8
        out of: 25
        explanation: Marginal size: 1.2m is 0.9m from ideal 2.1m.
      swell period:
        score: 6
        out of: 25
        explanation: Moderate period: 12s meets minimum 12s but below ideal 16s. Some groundswell energy present.
      wind:
        score: 9
        out of: 25
        explanation: Onshore/cross-shore: 13 km/h from 149° (SSE). Destroying wave quality. Offshore range: 90°-135°.
    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 Tongo Reef. Either swell direction (193°), size (1.2m), or wind (13 km/h from 149°) is unfavorable. Consider other spots or wait for better conditions.
  conditions:
    swell:
      height m: 1.2
      height ft: 3.9
      direction degrees: 193
      direction cardinal: SSW
      period s: 12
      explanation: 1.2m (3.9ft) swell from 193° (SSW) at 12s period
    wind:
      speed kmh: 13
      speed mph: 8.1
      direction degrees: 149
      direction cardinal: SSE
      explanation: 13 km/h (8 mph) from 149° (SSE)
    secondary swell:
      height m: 0.8
      direction degrees: 177
      direction cardinal: S
      period s: 10
forecasts:
  date: 2026-08-07
  day index: 3
  strike score:
    final score: 40
    category: Poor
    category emoji: 💤
    confidence: 0.92
    confidence explanation: High confidence (2-3 day forecast)
    summary: Poor conditions at Tongo Reef. Either swell direction (215°), size (1.3m), or wind (15 km/h from 146°) is unfavorable. Consider other spots or wait for better conditions.
provider: Strike Mission
date published: 2026-08-05T03:16:09.149Z
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)

swell direction:
  score: 16
  out of: 25
  explanation: Moderate alignment: Swell from 215° is 13° off optimal 202°, workable but not ideal.
swell size:
  score: 9
  out of: 25
  explanation: Marginal size: 1.3m is 0.8m from ideal 2.1m.
swell period:
  score: 14
  out of: 25
  explanation: Moderate period: 14s meets minimum 12s but below ideal 16s. Some groundswell energy present.
wind:
  score: 5
  out of: 25
  explanation: Onshore/cross-shore: 15 km/h from 146° (SE). Destroying wave quality. Offshore range: 90°-135°.

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: 1.3
  height ft: 4.3
  direction degrees: 215
  direction cardinal: SW
  period s: 14
  explanation: 1.3m (4.3ft) swell from 215° (SW) at 14s period
wind:
  speed kmh: 15
  speed mph: 9.3
  direction degrees: 146
  direction cardinal: SE
  explanation: 15 km/h (9 mph) from 146° (SE)
secondary swell:
  height m: 0.8
  direction degrees: 154
  direction cardinal: SSE
  period s: 6
windswell:
  height m: 0.3
  period s: 2
  explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-08
day index: 4
strike score:
  final score: 30
  category: Poor
  category emoji: 💤
  confidence: 0.89
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 15
      out of: 25
      explanation: Moderate alignment: Swell from 217° is 15° off optimal 202°, workable but not ideal.
    swell size:
      score: 5
      out of: 25
      explanation: Too small: 1.1m is below minimum 1.2m. Waves will be weak/mushy.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 14s meets minimum 12s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 1
      out of: 25
      explanation: Onshore/cross-shore: 16 km/h from 158° (SSE). Destroying wave quality. Offshore range: 90°-135°.
  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 Tongo Reef. Either swell direction (217°), size (1.1m), or wind (16 km/h from 158°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 217
    direction cardinal: SW
    period s: 14
    explanation: 1.1m (3.6ft) swell from 217° (SW) at 14s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 158
    direction cardinal: SSE
    explanation: 16 km/h (10 mph) from 158° (SSE)
  secondary swell:
    height m: 0.7
    direction degrees: 155
    direction cardinal: SSE
    period s: 6
  windswell:
    height m: 0.4
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-09
day index: 5
strike score:
  final score: 19
  category: Poor
  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 215° is 13° off optimal 202°, workable but not ideal.
    swell size:
      score: 3
      out of: 25
      explanation: Too small: 1.0m is below minimum 1.2m. Waves will be weak/mushy.
    swell period:
      score: 6
      out of: 25
      explanation: Moderate period: 12s meets minimum 12s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 155° (SSE). Destroying wave quality. Offshore range: 90°-135°.
  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 Tongo Reef. Either swell direction (215°), size (1.0m), or wind (17 km/h from 155°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 215
    direction cardinal: SW
    period s: 12
    explanation: 1.0m (3.3ft) swell from 215° (SW) at 12s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 155
    direction cardinal: SSE
    explanation: 17 km/h (11 mph) from 155° (SSE)
  windswell:
    height m: 0.4
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-10
day index: 6
strike score:
  final score: 31
  category: Poor
  category emoji: 💤
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 12
      out of: 25
      explanation: Moderate alignment: Swell from 179° is 23° off optimal 202°, workable but not ideal.
    swell size:
      score: 3
      out of: 25
      explanation: Too small: 1.0m is below minimum 1.2m. Waves will be weak/mushy.
    swell period:
      score: 14
      out of: 25
      explanation: Moderate period: 14s meets minimum 12s but below ideal 16s. Some groundswell energy present.
    wind:
      score: 5
      out of: 25
      explanation: Onshore/cross-shore: 17 km/h from 147° (SSE). Destroying wave quality. Offshore range: 90°-135°.
  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: Poor conditions at Tongo Reef. Either swell direction (179°), size (1.0m), or wind (17 km/h from 147°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1
    height ft: 3.3
    direction degrees: 179
    direction cardinal: S
    period s: 14
    explanation: 1.0m (3.3ft) swell from 179° (S) at 14s period
  wind:
    speed kmh: 17
    speed mph: 10.6
    direction degrees: 147
    direction cardinal: SSE
    explanation: 17 km/h (11 mph) from 147° (SSE)
  secondary swell:
    height m: 0.5
    direction degrees: 208
    direction cardinal: SSW
    period s: 14
  windswell:
    height m: 0.6
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-11
day index: 7
strike score:
  final score: 32
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 14
      out of: 25
      explanation: Moderate alignment: Swell from 184° is 18° off optimal 202°, workable but not ideal.
    swell size:
      score: 5
      out of: 25
      explanation: Too small: 1.1m is below minimum 1.2m. Waves will be weak/mushy.
    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: 2
      out of: 25
      explanation: Onshore/cross-shore: 22 km/h from 154° (SSE). Destroying wave quality. Offshore range: 90°-135°.
  adjustments:
    wind history:
      adjustment: 0
      groomed: false
      morning sickness: false
      explanation: No significant wind history adjustment.
    windswell penalty:
      adjustment: -5
      windswell degraded: true
      explanation: -5 points: Short-period windswell is present, creating choppy, disorganized conditions.
    secondary swell bonus:
      adjustment: 0
      explanation: No secondary swell bonus.
  summary: Poor conditions at Tongo Reef. Either swell direction (184°), size (1.1m), or wind (22 km/h from 154°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 184
    direction cardinal: S
    period s: 16
    explanation: 1.1m (3.6ft) swell from 184° (S) at 16s period
  wind:
    speed kmh: 22
    speed mph: 13.7
    direction degrees: 154
    direction cardinal: SSE
    explanation: 22 km/h (14 mph) from 154° (SSE)
  secondary swell:
    height m: 0.5
    direction degrees: 205
    direction cardinal: SSW
    period s: 12
  windswell:
    height m: 0.9
    period s: 4
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-12
day index: 8
strike score:
  final score: 18
  category: Poor
  category emoji: 💤
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 10
      out of: 25
      explanation: Moderate alignment: Swell from 175° is 27° off optimal 202°, workable but not ideal.
    swell size:
      score: 5
      out of: 25
      explanation: Too small: 1.1m is below minimum 1.2m. Waves will be weak/mushy.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 15s is 94% of ideal 16s. Clean, powerful groundswell.
    wind:
      score: 2
      out of: 25
      explanation: Onshore/cross-shore: 20 km/h from 155° (SSE). Destroying wave quality. Offshore range: 90°-135°.
  adjustments:
    wind history:
      adjustment: -10
      groomed: false
      morning sickness: true
      explanation: -10 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    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: Poor conditions at Tongo Reef. Either swell direction (175°), size (1.1m), or wind (20 km/h from 155°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.1
    height ft: 3.6
    direction degrees: 175
    direction cardinal: S
    period s: 15
    explanation: 1.1m (3.6ft) swell from 175° (S) at 15s period
  wind:
    speed kmh: 20
    speed mph: 12.4
    direction degrees: 155
    direction cardinal: SSE
    explanation: 20 km/h (12 mph) from 155° (SSE)
  secondary swell:
    height m: 0.4
    direction degrees: 219
    direction cardinal: SW
    period s: 14
  windswell:
    height m: 0.7
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-13
day index: 9
strike score:
  final score: 44
  category: Poor
  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 211° is 9° off optimal 202°, workable but not ideal.
    swell size:
      score: 9
      out of: 25
      explanation: Marginal size: 1.3m is 0.8m from ideal 2.1m.
    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: 5
      out of: 25
      explanation: Onshore/cross-shore: 19 km/h from 157° (SSE). Destroying wave quality. Offshore range: 90°-135°.
  adjustments:
    wind history:
      adjustment: -7
      groomed: false
      morning sickness: true
      explanation: -7 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
    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: Poor conditions at Tongo Reef. Either swell direction (211°), size (1.3m), or wind (19 km/h from 157°) is unfavorable. Consider other spots or wait for better conditions.
conditions:
  swell:
    height m: 1.3
    height ft: 4.3
    direction degrees: 211
    direction cardinal: SSW
    period s: 17
    explanation: 1.3m (4.3ft) swell from 211° (SSW) at 17s period
  wind:
    speed kmh: 19
    speed mph: 11.8
    direction degrees: 157
    direction cardinal: SSE
    explanation: 19 km/h (12 mph) from 157° (SSE)
  secondary swell:
    height m: 0.4
    direction degrees: 193
    direction cardinal: SSW
    period s: 10
  windswell:
    height m: 0.7
    period s: 3
    explanation: Local wind-generated waves (choppy, short-period)

Strike Mission
type: Organization