Surf Forecasts:
Scar Reef surf forecast from 24 Aug 2026:
- Best quality surf: Thursday 27 Aug, 8PM (local time) - 4.5ft (1.4m), 20s period, SW swell with offshore winds.
- Most powerful swell: Friday 28 Aug, 5AM (local time) - 8ft (2.5m), 18s period, SW swell with 4,257 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 8PM (local time) - 5.5ft (1.7m), 16s period with SSW swell.
Best Forecast Surf Conditions for Scar Reef this week:
The surf forecast for Scar Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 8PM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 0.4m and 20s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Scar Reef in the next 16 days are 2.5m 18s and forecast to arrive on Friday (Aug 28) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Aug 25) at 5PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 24th Aug) | 5.5ft (1.7m) 16s |
| Best Surf | 8PM (Thu 27th Aug) | 4.5ft (1.4m) 20s |
| Most Powerful | 5AM (Fri 28th Aug) | 8ft (2.5m) 18s |
Table - best surf conditions forecast for Scar Reef over the next 16 days.
The Lowdown
Alright, Rusty here again, talking feet and miles per hour now. Scar Reef is on.
Monday afternoon gets it started with a 6ft SSW swell at 16 seconds, combined energy around 1705, and a light offshore wind from the SE at 6 mph. Water temp is about 79°, right on the money for this time of year. Clean, lined-up waves on the reef.
Tuesday morning brings 6ft at 15 seconds, still offshore from the SE at 9 mph. Tuesday afternoon switches to a light cross-off from the east at 6 mph, swell from the SW at 6ft and 16 seconds.
Wednesday holds steady: 6ft in the morning, 5ft by afternoon, both SSW direction with periods of 14 seconds. Winds are light cross-off then offshore. Clean all day.
Thursday drops to 4ft – smaller but the period hits 16 seconds in the morning, and then afternoon jumps to 20 seconds with combined energy at 1732. Very long period – the reef will turn that into speedy, hollow lines.
Friday is the big one for experts: 8ft SSW at 17 seconds in the morning, energy at 3877. Light cross-off winds. That’s big, powerful, and only for those who know the lineup. Friday afternoon is similar with some clouds.
Saturday the swell eases to 6ft, then 6ft with a light SSE offshore in the afternoon.
Sunday shakes out at 5ft, still clean. Monday August 31st is glass – no wind at all – with a 5ft, 19-second swell. That’s a special session, glassy and long-period. Monday afternoon jumps to 6ft with SSE offshore, excellent for advanced.
Tuesday September 1st is glassy again, 7ft at 17 seconds, strong energy. Wednesday the 2nd is glassy morning, 7ft at 16 seconds. The first three days of September are firing for experts.
From September 3rd onward the size backs off to around 6ft, then down to 5ft, and by the 5th it’s only 3ft to 4ft. But September 6th Sunday brings a new pulse: 7ft SSW, 15 seconds, 1883 energy, clean cross-off wind. That runs into Monday the 7th with similar size.
The absolute top sessions are Friday August 28th and the September 1st to 3rd window – big, clean, long-period SW groundswell, favourable winds, and a reef that knows how to handle it. If you’re advanced, that’s the call. Crowds are possible but not constant. Never flat, never a dull moment – this reef delivers.
Rusty out.
Short Range ForecastMostly dry. Warm (max 28°C on Mon afternoon, min 22°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sun morning, min 22°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 16 | SSW 14 | SSW 15 | SW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 12 | SW 16 | SW 20 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 19 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1608 | 1057 | 1206 | 1449 | 1319 | 1143 | 883 | 426 | 558 | 769 | 3703 | 3877 | 3559 | 2594 | 1641 | 1358 | 1002 | 721 | 700 | 855 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:17PM1.08m | 8:38AM1.49m | 11:10PM1.12m | 9:22AM1.57m | 11:15PM1.19m | 10:01AM1.62m | 11:27PM1.27m | 10:37AM1.64m | 11:42PM1.36m | 11:13AM1.62m | 11:59PM1.44m | 11:49AM1.55m | 00:19AM1.52m | |||||||
Low Tide | 3:53PM0.29m | 2:37AM1.00m | 4:20PM0.23m | 3:25AM0.91m | 4:44PM0.20m | 4:03AM0.82m | 5:07PM0.20m | 4:38AM0.72m | 5:28PM0.23m | 5:13AM0.62m | 5:48PM0.29m | 5:49AM0.53m | 6:07PM0.37m | |||||||
 |  | | |  | | | | | | | | | | | | | | | | |
 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 24 | 27 | 28 | 24 | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 27 | 27 | 25 |
Feels °C | 28 | 25 | 27 | 28 | 24 | 28 | 27 | 27 | 27 | 26 | 26 | 27 | 25 | 25 | 28 | 27 | 26 | 29 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 14 | SSW 15 | SW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 12 | SW 16 | SSW 12 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SSW 12 |
| kJ | 1608 | 1057 | 1206 | 1449 | 1319 | 1143 | 883 | 426 | 558 | 440 | 3703 | 3877 | 3559 | 2594 | 1641 | 1358 | 1002 | 721 | 700 | 543 |
Swell 2 Height (m) Direction Period (s) | SW 20 | SW 18 | SSW 6 | SE 6 | — | — | SW 20 | SSW 13 | SW 12 | SW 15 | — | — | — | SE 5 | SE 5 | SE 6 | SSW 24 | SW 22 | SW 21 | SW 19 |
| kJ | 97 | 199 | 3 | 38 | — | — | 15 | 229 | 282 | 523 | — | — | — | 18 | 13 | 25 | 54 | 227 | 365 | 855 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SSW 6 | — | — | — | SW 16 | S 5 | SW 20 | — | — | — | — | — | S 26 | SSW 6 | SE 5 | SE 5 | — |
| kJ | — | — | — | 7 | — | — | — | 278 | 14 | 769 | — | — | — | — | — | 13 | 8 | 9 | 12 | — |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 5 | SE 6 | ESE 6 | ESE 5 | ESE 5 | SE 5 | ESE 4 | SSE 5 | SE 5 | — | SE 5 | SE 5 | SE 5 | SE 5 | ESE 6 | SSE 6 | ESE 5 | ESE 5 | ESE 4 |
| kJ | 58 | 30 | 52 | 105 | 61 | 46 | 20 | 23 | 20 | 15 | — | 28 | 25 | 26 | 42 | 55 | 27 | 32 | 33 | 26 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 179 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Sumbawa | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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Information about the Scar Reef Surf forecast
The above surf forecast table for Scar Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Scar Reef can be found by selecting the local surf guide option on the grey menu. Our Scar Reef surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Scar Reef) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Scar Reef may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Scar Reef is 55 km (34 miles) from the city of Praya. If you plan a holiday in Sumbawa, look for hotels and other accommodation in Praya. Praya has rooms for a wide range of budgets as well as car hire and transport links.
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