Surf Forecast for Uluwatu
type: Dataset
description: 10-day surf forecast with Strike Scores for Uluwatu, Bali, Indonesia
about: Uluwatu
  type: TouristAttraction
  geo: GeoCoordinates
    latitude: -8.8156
    longitude: 115.0892
  description: Uluwatu is Bali's most famous wave, a long, walling left-hander that breaks over a shallow reef at the base of dramatic limestone cliffs. The wave offers multiple sections—from the Outside Corner through Temples, the Racetrack, and finally the Inside—allowing for rides of 100+ meters on a good day. The trade winds blow offshore here during the dry season (April-October), creating perfect glassy conditions most mornings. Entry and exit are via a cave in the cliff face, adding to the adventure. The surrounding clifftop temples and warungs make it a complete surf experience.
summary:
  best day:
    date: 2026-08-08
    score: 98
    category: Epic
    explanation: Best day in the forecast: 2026-08-08 with a score of 98/100 (Epic)
  firing days count: 7
  firing days:
    date: 2026-08-05
    score: 85
  firing days:
    date: 2026-08-06
    score: 90
  firing days:
    date: 2026-08-07
    score: 96
  firing days:
    date: 2026-08-08
    score: 98
  firing days:
    date: 2026-08-09
    score: 93
  firing days:
    date: 2026-08-12
    score: 83
  firing days:
    date: 2026-08-14
    score: 87
  overall recommendation: Strong recommendation: Uluwatu has 7 Firing days in the next 10 days. Book your trip!
forecasts:
  date: 2026-08-05
  day index: 0
  strike score:
    final score: 85
    category: Firing
    category emoji: 🔥
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 24
        out of: 25
        explanation: Perfect alignment: Swell from 214° is within 5° of optimal 200°.
      swell size:
        score: 13
        out of: 25
        explanation: Marginal size: 1.8m is 0.4m from ideal 2.3m.
      swell period:
        score: 21
        out of: 25
        explanation: Good period: 14s is 88% of ideal 16s. Clean, powerful groundswell.
      wind:
        score: 23
        out of: 25
        explanation: Moderate offshore: 17 km/h from 110° (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 Uluwatu. The 1.8m swell from 214° aligns well with the spot, and offshore winds are grooming the face. Worth planning a trip around this.
  conditions:
    swell:
      height m: 1.8
      height ft: 5.9
      direction degrees: 214
      direction cardinal: SW
      period s: 14
      explanation: 1.8m (5.9ft) swell from 214° (SW) at 14s period
    wind:
      speed kmh: 17
      speed mph: 10.6
      direction degrees: 110
      direction cardinal: ESE
      explanation: 17 km/h (11 mph) from 110° (ESE)
    secondary swell:
      height m: 0.8
      direction degrees: 183
      direction cardinal: S
      period s: 11
    windswell:
      height m: 0.3
      period s: 3
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-06
  day index: 1
  strike score:
    final score: 90
    category: Firing
    category emoji: 🔥
    confidence: 1
    confidence explanation: Very high confidence (0-1 day forecast)
    breakdown:
      swell direction:
        score: 24
        out of: 25
        explanation: Perfect alignment: Swell from 214° is within 5° of optimal 200°.
      swell size:
        score: 17
        out of: 25
        explanation: Marginal size: 2.2m is 0.0m from ideal 2.3m.
      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: 23
        out of: 25
        explanation: Moderate offshore: 17 km/h from 101° (E). 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 Uluwatu. The 2.2m swell from 214° 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: 214
      direction cardinal: SW
      period s: 17
      explanation: 2.2m (7.2ft) swell from 214° (SW) at 17s period
    wind:
      speed kmh: 17
      speed mph: 10.6
      direction degrees: 101
      direction cardinal: E
      explanation: 17 km/h (11 mph) from 101° (E)
    secondary swell:
      height m: 0.9
      direction degrees: 147
      direction cardinal: SSE
      period s: 5
    windswell:
      height m: 0.3
      period s: 2
      explanation: Local wind-generated waves (choppy, short-period)
forecasts:
  date: 2026-08-07
  day index: 2
  strike score:
    final score: 96
    category: Epic
    category emoji: ⚡
    confidence: 0.95
    confidence explanation: High confidence (2-3 day forecast)
    breakdown:
      swell direction:
        score: 23
        out of: 25
        explanation: Good alignment: Swell from 215° is 15° off optimal 200°, still within prime range.
      swell size:
        score: 20
        out of: 25
        explanation: Good size: 2.5m is within 15% of ideal 2.3m.
      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: 24
        out of: 25
        explanation: Moderate offshore: 15 km/h from 98° (E). 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 Uluwatu! All factors are nearly perfect: 2.5m swell from 215° at 16s period, with offshore wind. Drop everything and go!
provider: Strike Mission
date published: 2026-08-05T00:29:49.038Z
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:
  height m: 2.5
  height ft: 8.2
  direction degrees: 215
  direction cardinal: SW
  period s: 16
  explanation: 2.5m (8.2ft) swell from 215° (SW) at 16s period
wind:
  speed kmh: 15
  speed mph: 9.3
  direction degrees: 98
  direction cardinal: E
  explanation: 15 km/h (9 mph) from 98° (E)
secondary swell:
  height m: 1
  direction degrees: 148
  direction cardinal: SSE
  period s: 5

date: 2026-08-08
day index: 3
strike score:
  final score: 98
  category: Epic
  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 214° is within 5° of optimal 200°.
    swell size:
      score: 22
      out of: 25
      explanation: Good size: 2.6m is within 15% of ideal 2.3m.
    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: 23
      out of: 25
      explanation: Moderate offshore: 18 km/h from 111° (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 Uluwatu! All factors are nearly perfect: 2.6m swell from 214° at 16s period, with offshore wind. Drop everything and go!
conditions:
  swell:
    height m: 2.6
    height ft: 8.5
    direction degrees: 214
    direction cardinal: SW
    period s: 16
    explanation: 2.6m (8.5ft) swell from 214° (SW) at 16s period
  wind:
    speed kmh: 18
    speed mph: 11.2
    direction degrees: 111
    direction cardinal: ESE
    explanation: 18 km/h (11 mph) from 111° (ESE)
  secondary swell:
    height m: 1
    direction degrees: 145
    direction cardinal: SE
    period s: 5

date: 2026-08-09
day index: 4
strike score:
  final score: 93
  category: Firing
  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 214° is within 5° of optimal 200°.
    swell size:
      score: 18
      out of: 25
      explanation: Marginal size: 2.3m is 0.0m from ideal 2.3m.
    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: 23
      out of: 25
      explanation: Moderate offshore: 16 km/h from 114° (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 Uluwatu. The 2.3m swell from 214° aligns well with the spot, and offshore winds are grooming the face. Worth planning a trip around this.
conditions:
  swell:
    height m: 2.3
    height ft: 7.5
    direction degrees: 214
    direction cardinal: SW
    period s: 16
    explanation: 2.3m (7.5ft) swell from 214° (SW) at 16s period
  wind:
    speed kmh: 16
    speed mph: 9.9
    direction degrees: 114
    direction cardinal: ESE
    explanation: 16 km/h (10 mph) from 114° (ESE)
  secondary swell:
    height m: 0.9
    direction degrees: 147
    direction cardinal: SSE
    period s: 6
  windswell:
    height m: 0.3
    period s: 2
    explanation: Local wind-generated waves (choppy, short-period)

date: 2026-08-10
day index: 5
strike score:
  final score: 77
  category: Good
  category emoji: ✅
  confidence: 0.86
  confidence explanation: Moderate confidence (4-5 day forecast)
  breakdown:
    swell direction:
      score: 19
      out of: 25
      explanation: Moderate alignment: Swell from 205° is 5° off optimal 200°, workable but not ideal.
    swell size:
      score: 19
      out of: 25
      explanation: Marginal size: 2.4m is 0.1m from ideal 2.3m.
    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: Moderate offshore: 11 km/h from 126° (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 Uluwatu. 2.4m swell from 205° with manageable wind. Solid session guaranteed.
conditions:
  swell:
    height m: 2.4
    height ft: 7.9
    direction degrees: 205
    direction cardinal: SSW
    period s: 16
    explanation: 2.4m (7.9ft) swell from 205° (SSW) at 16s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 126
    direction cardinal: SE
    explanation: 11 km/h (7 mph) from 126° (SE)
  secondary swell:
    height m: 0.8
    direction degrees: 149
    direction cardinal: SSE
    period s: 7

date: 2026-08-11
day index: 6
strike score:
  final score: 79
  category: Good
  category emoji: ✅
  confidence: 0.83
  confidence explanation: Low confidence (6-7 day forecast)
  breakdown:
    swell direction:
      score: 18
      out of: 25
      explanation: Moderate alignment: Swell from 203° is 3° off optimal 200°, workable but not ideal.
    swell size:
      score: 22
      out of: 25
      explanation: Good size: 2.9m is within 15% of ideal 2.3m.
    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: 13
      out of: 25
      explanation: Moderate offshore: 14 km/h from 144° (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 Uluwatu. 2.9m swell from 203° with manageable wind. Solid session guaranteed.
conditions:
  swell:
    height m: 2.9
    height ft: 9.5
    direction degrees: 203
    direction cardinal: SSW
    period s: 17
    explanation: 2.9m (9.5ft) swell from 203° (SSW) at 17s period
  wind:
    speed kmh: 14
    speed mph: 8.7
    direction degrees: 144
    direction cardinal: SE
    explanation: 14 km/h (9 mph) from 144° (SE)
  secondary swell:
    height m: 0.5
    direction degrees: 153
    direction cardinal: SSE
    period s: 8

date: 2026-08-12
day index: 7
strike score:
  final score: 83
  category: Firing
  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 203° is 3° off optimal 200°, workable but not ideal.
    swell size:
      score: 18
      out of: 25
      explanation: Marginal size: 2.3m is 0.0m from ideal 2.3m.
    swell period:
      score: 23
      out of: 25
      explanation: Good period: 15s is 94% of ideal 16s. Clean, powerful groundswell.
    wind:
      score: 25
      out of: 25
      explanation: Light offshore: 9 km/h from 127° (SE). Grooming the wave face beautifully.
  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 Uluwatu. The 2.3m swell from 203° aligns well with the spot, and light offshore winds are grooming the face. Worth planning a trip around this.
conditions:
  swell:
    height m: 2.3
    height ft: 7.5
    direction degrees: 203
    direction cardinal: SSW
    period s: 15
    explanation: 2.3m (7.5ft) swell from 203° (SSW) at 15s period
  wind:
    speed kmh: 9
    speed mph: 5.6
    direction degrees: 127
    direction cardinal: SE
    explanation: 9 km/h (6 mph) from 127° (SE)
  secondary swell:
    height m: 0.5
    direction degrees: 193
    direction cardinal: SSW
    period s: 11

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: 15
      out of: 25
      explanation: Moderate alignment: Swell from 198° is 2° off optimal 200°, workable but not ideal.
    swell size:
      score: 18
      out of: 25
      explanation: Marginal size: 3.4m is 1.1m from ideal 2.3m.
    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: 24
      out of: 25
      explanation: Moderate offshore: 14 km/h from 126° (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 Uluwatu. 3.4m swell from 198° with manageable wind. Solid session guaranteed.
conditions:
  swell:
    height m: 3.4
    height ft: 11.2
    direction degrees: 198
    direction cardinal: SSW
    period s: 16
    explanation: 3.4m (11.2ft) swell from 198° (SSW) at 16s period
  wind:
    speed kmh: 14
    speed mph: 8.7
    direction degrees: 126
    direction cardinal: SE
    explanation: 14 km/h (9 mph) from 126° (SE)
  secondary swell:
    height m: 0.5
    direction degrees: 130
    direction cardinal: SE
    period s: 4

date: 2026-08-14
day index: 9
strike score:
  final score: 87
  category: Firing
  category emoji: 🔥
  confidence: 0.8
  confidence explanation: Very low confidence (8-10 day forecast, conditions may change)
  breakdown:
    swell direction:
      score: 20
      out of: 25
      explanation: Good alignment: Swell from 206° is 6° off optimal 200°, still within prime range.
    swell size:
      score: 16
      out of: 25
      explanation: Marginal size: 2.1m is 0.1m from ideal 2.3m.
    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: 25
      out of: 25
      explanation: Moderate offshore: 11 km/h from 113° (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 Uluwatu. The 2.1m swell from 206° 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: 206
    direction cardinal: SSW
    period s: 17
    explanation: 2.1m (6.9ft) swell from 206° (SSW) at 17s period
  wind:
    speed kmh: 11
    speed mph: 6.8
    direction degrees: 113
    direction cardinal: ESE
    explanation: 11 km/h (7 mph) from 113° (ESE)
  secondary swell:
    height m: 0.5
    direction degrees: 133
    direction cardinal: SE
    period s: 4

Strike Mission
type: Organization