Map
Scar Reef
Today's Surf Conditions at Scar Reef
Spot Conditions Map
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Today's Surf & Wind Forecast (Hourly)
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Spot Overview & Description
Scar Reef is the crown jewel of West Sumbawa’s surf scene—a raw, unapologetic challenge that demands respect before it offers reward. This left-hand reef break is built for experts only, where sharp coral and freight-train barrels separate the bold from the foolhardy. When the Indian Ocean sends its energy, the vibe stays mellow ashore, but beneath the surface, this wave is anything but. The magic happens with a southwest swell, though a pure south setup can also fire it up. Minimum size is around 3 feet, but Scar Reef truly comes alive as the swell pushes overhead and beyond, easily handling double-overhead-plus waves. The takeoff is a quick, critical drop into a hollow left that morphs from a perfectly groomed mid-tide bowl into a fast, pitching wall as the tide rises. Ideal conditions call for southeasterly winds, which groom the faces into clean, playing-card walls. Scar Reef works across a wide tidal range—low, mid, and high tide all have their moments, but each phase demands a different line. This reef shows no mercy: expect a steep, lip-throwing entry, a brief backdoor alley, and a relentless closeout section that punishes hesitation. This is not a place to learn—it’s a proving ground for the elite.
Best Surf Season & Climatology
Best Surf Season (May - October)
During the heart of the Indonesian dry season, the Indian Ocean roars to life with consistent, long-period groundswells sent northward from the Roaring Forties and polar lows. While Scar Reef faces northwest—ideally suited for swell from the north and west—the data reveals that the dominant swell direction is actually from the SSW to SW. This may seem counterintuitive, but these southerly swells wrap around the island and refract into the reef with remarkable power and length. Combined with nearly 90% offshore wind conditions (blowing from the SSE to SSW), the result is a prolonged stretch of clean, groomed waves that can range from fun, rippable 1–1.5m faces to heavier 1.5–2.5m sets. Average wave periods hover around 14–14.5 seconds, delivering the kind of juice that makes the reef come alive. This is the window when Scar Reef truly earns its reputation.
Fair Surf Season (March - April & November)
The transition months between the monsoon extremes bring a mix of conditions. March and April see the southeast trades strengthening and the offshore wind percentage climbing from 44% to 69%, while the groundswell remains present but slightly less consistent. Swell heights average a solid 1.2–1.3m with periods around 13–14 seconds, still capable of producing punchy, rideable waves—especially on days when the wind lines up. November marks the return of the wet season, with ideal wind dropping to 81% and swell heights easing back to 1.3m. Expect a blend of fun-sized waves and occasional background noise. Patience and careful tide timing can yield unexpected gems during these shoulder months.
Low Surf Season (December - February)
The northwest monsoon exerts its grip over the region from December through February, bringing less favorable wind patterns and a reduction in overall swell quality. Offshore wind percentages fall to 27–48%, and the average swell height dips to 1.3m with periods shortening to 12.6–12.8 seconds. While the dominant swell direction remains SSW/SW, the wind—often blowing from the north or northeast—blows onshore for much of the time, putting a chop on the wave face and making conditions less inviting. Small, fun-sized waves can still be found, especially on lighter wind days, but this is the least reliable period. For those chasing clean, groomed lines, the low season is best avoided unless you're willing to gamble on a weather window.
Detailed Surf Information for Scar Reef
Detailed Surf Forecast
Access our detailed 8-day swell and wind forecast charts for Scar Reef with tidal graphs, period ranges, and daily forecast text summaries.
Swell & Wind Statistics
Explore historical swell consistency, wave heights, and offshore wind windows month-by-month, compiled from over 40 years of data.
Historical Surf Report
Browse the historical database archives to view past wave reports and understand spot climatology during specific years and months.
