Surf Forecasts:
Scar Reef surf forecast from 11 Sep 2026:
- Best quality surf: Sunday 13 Sep, 2AM (local time) - 5ft (1.6m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 5PM (local time) - 7ft (2.2m), 17s period, SW swell with 2,823 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 8AM (local time) - 5ft (1.6m), 15s period with SW 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 Saturday (Sep 12) at 8AM. The primary swell is predicted to be 1.6m and 15s period with a secondary swell of 0.7m and 22s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Scar Reef in the next 16 days are 2.2m 17s and forecast to arrive on Sunday (Sep 13) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Sep 14) at 5PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 12th Sep) | 5ft (1.6m) 15s |
| Best Surf | 2AM (Sun 13th Sep) | 5ft (1.6m) 19s |
| Most Powerful | 5PM (Sun 13th Sep) | 7ft (2.2m) 17s |
Table - best surf conditions forecast for Scar Reef over the next 16 days.
The Lowdown
Alright mate, let’s talk Scar Reef. This is a sheltered little reef-and-point setup that loves a good SW swell, and we’ve got a solid run ahead. Water temp is about 80°, bang on average for this time of year, so the 3/2 will do you fine.
The surf kicks off proper on Saturday the 12th. Morning brings a clean 5ft SW swell with a very long 15-second period, light cross-off wind from the south at 3 mph. The combined energy is pumpin’ at 1719 (moderate-to-strong). That afternoon is the real gem though: glassy conditions, wind from the east at 3 mph, swell holds at 5ft SW, 14-second period (1316 energy). Absolutely pristine.
Sunday the 13th steps it up. Morning shows 6ft SW swell with an 18-second period (2457 energy) and clean cross-off wind. That’s serious groundswell. Afternoon jumps to 7ft SW, 17 seconds (2875 energy). This is expert-only—big, powerful, and demanding.
Monday the 14th through Thursday the 17th holds in the 5ft to 6ft range, SW to SSW, periods 14 to 16 seconds. Winds stay light and cross-off. Energy stays solid in the three-digit range (1300 to 1600). Good, consistent waves but nothing that tops the weekend.
Friday the 18th drops a bit: 4ft to 5ft SSW swell, periods down to 13–14 seconds (883–950 energy). Still clean, but a little softer. Saturday the 19th picks up again with 5ft SW swell and moderate energy (1131–1230). Very surfable.
Then Sunday the 20th delivers another standout: 8ft SW swell at 16 seconds (2687 energy) in the morning, and 8ft SW in the afternoon with offshore wind (2761 energy). This is for the experienced crew only—big, clean, and heavy.
Monday the 21st and Tuesday the 22nd settle to 5ft to 6ft SW swell with glassy mornings and light offshores. Wednesday the 23rd is a cracker: 6ft SSW swell at 16 seconds, glassy calm, energy at 2031. Perfect dawn patrol material.
The rest of the run through the 27th stays in the 4ft to 6ft range, mostly SSW, periods between 13 and 16 seconds. Winds stay favorable—light, cross-off, or glassy. No real bad days here. The two standouts: Saturday the 12th afternoon for the glassy perfection, and Sunday the 20th for the big groundswell power. Crowds can show up at Scar Reef sometimes, but with this much quality, there’s plenty to go around. This reef-and-point setup handles long-period groundswell like a champ, so expect long walls and longer lulls between sets.
Rusty out.
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 23°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Tue afternoon, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
AM | 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) | SW 15 | SW 14 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SW 14 | SSW 13 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 940 | 833 | 1935 | 1809 | 2823 | 2166 | 1634 | 1513 | 1418 | 1540 | 1474 | 1474 | 1237 | 1358 | 1693 | 1447 | 1447 | 1249 | 920 | 581 | 860 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off |
High Tide | 11:20AM1.58m | 11:40PM1.60m | 11:59AM1.47m | 00:02AM1.65m | 12:37PM1.33m | 00:25AM1.66m | 1:14PM1.18m | 00:48AM1.64m | 1:52PM1.03m | 1:12AM1.59m | 2:37PM0.90m | 1:38AM1.51m | 2:08AM1.42m | ||||||||
Low Tide | 5:30PM0.37m | 5:55AM0.35m | 5:52PM0.46m | 6:34AM0.30m | 6:11PM0.56m | 7:13AM0.31m | 6:26PM0.64m | 7:53AM0.35m | 6:36PM0.71m | 8:38AM0.43m | 6:33PM0.77m | 9:40AM0.51m | |||||||||
 |  |  | | | | | | | | | | | | | | | | | | | |
 | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:09 | — | — | 6:09 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 27 | 28 | 25 | 27 | 28 | 25 | 26 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 |
Feels °C | 30 | 29 | 28 | 29 | 31 | 28 | 29 | 30 | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SW 14 | SSW 13 | SW 15 |
| kJ | 940 | 833 | 1935 | 1809 | 2823 | 2166 | 1634 | 1513 | 1418 | 1540 | 1474 | 1474 | 1237 | 1358 | 1693 | 1447 | 1447 | 1249 | 920 | 581 | 860 |
Swell 2 Height (m) Direction Period (s) | SW 21 | SE 6 | SSW 14 | SW 15 | SE 6 | — | SE 7 | SE 6 | SSE 5 | SE 6 | — | — | SSE 6 | SSE 5 | — | SE 6 | SE 6 | SE 5 | SE 6 | SW 16 | SW 20 |
| kJ | 763 | 38 | 845 | 614 | 52 | — | 52 | 64 | 26 | 30 | — | — | 28 | 37 | — | 39 | 27 | 12 | 12 | 302 | 99 |
Swell 3 Height (m) Direction Period (s) | SE 6 | SW 21 | — | SE 6 | — | — | — | — | — | — | — | — | SSW 21 | — | — | — | — | — | SW 22 | SE 6 | SE 5 |
| kJ | 16 | 445 | — | 34 | — | — | — | — | — | — | — | — | 45 | — | — | — | — | — | 18 | 8 | 4 |
Wind waves Height (m) Direction Period (s) | ESE 6 | SE 6 | SE 6 | ESE 7 | SE 6 | SE 6 | SE 7 | ESE 6 | — | SE 6 | SSE 5 | SSE 5 | SE 6 | SE 6 | SE 5 | SE 6 | SE 6 | SE 5 | ESE 6 | — | — |
| kJ | 59 | 92 | 61 | 116 | 138 | 32 | 178 | 176 | — | 88 | 37 | 31 | 86 | 77 | 69 | 116 | 86 | 38 | 41 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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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