
Surf Forecasts:
Scar Reef surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 8PM (local time) - 7ft (2.2m), 16s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 11AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,336 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 8PM (local time) - 7ft (2.1m), 15s 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 Saturday (Sep 05) at 8PM. The primary swell is predicted to be 2.1m and 15s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Scar Reef in the next 16 days are 2.5m 16s and forecast to arrive on Wednesday (Sep 09) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Friday (Sep 11) at 11AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 5th Sep) | 7ft (2.1m) 15s |
| Best Surf | 8PM (Sun 6th Sep) | 7ft (2.2m) 16s |
| Most Powerful | 11AM (Wed 9th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Scar Reef over the next 16 days.
The Lowdown
Alright everyone, Rusty here. Let’s look at what’s coming up for Scar Reef over the next couple of weeks. This is a reef and point break, sheltered from the wide open ocean, so it needs a proper SW swell to light up. And we’ve got a long run of it.
The first swell shows up on Saturday, September 5th, with a solid SSW groundswell at 7ft, with a period of 16 seconds. That’s long-period energy that’s going to wrap around the point and give you some proper lines. The wind is a gentle 9 mph from the south, cross-off, keeping the surface clean. The water is a warm 79°, which is right about average for this time of year. The combined energy is strong at 2186, so there’s plenty of power. This is advanced water at this size, but the experienced guys are going to love it.
Sunday the 6th stays clean, with the swell backing off a bit to 6ft, still from the SSW with a 14-second period. The energy is still solid at 1767, and the wind stays gentle and cross-off. A good day for those who want a slightly mellower session.
Monday the 7th sees the swell bump back up to 7ft, but the conditions are a bit more marginal – still clean, but the tide might play a part. The energy is there at 1745, but it’s not the peak of the run.
The real standout day is Tuesday the 8th. The swell is 6ft in the afternoon, but the period jumps to 19 seconds – that’s incredibly long, pure groundswell. The combined energy climbs to 3392, which is serious power. This is a point break, so that long period is going to draw in beautifully, giving you those long, walling rides. It’s still for the advanced surfer, but the quality is going to be top notch.
We keep the swell going through Wednesday the 9th at 8ft, pushing into expert-only territory. The period drops to 16 seconds, but the energy is still huge at 3336. The wind is a steady cross-off from the SSW. If you’re solid, you’ll be in for a big, powerful session.
The second week settles into a more consistent rhythm. From Thursday the 10th through to Saturday the 20th, we’re looking at daily 5ft to 8ft of SW swell, with periods mostly between 14 and 18 seconds. The wind remains light, mostly cross-off or offshore, and there are a few glassy morning windows, especially on the 14th and the 20th. The combined energy stays in the 1200 to 2500 range, so it’s moderate to strong, and the conditions are consistently described as "very good" or "excellent." The 13th of September stands out with a clear morning, a 8ft SW swell at 18 seconds, and a clean offshore wind from the SE – that’s a dream session.
Crowds at Scar Reef can be a bit of a thing sometimes, so if you can get there early for those glassy mornings, you’ll have a better chance of a quieter lineup. The reef itself is for advanced surfers, especially when the swell is over 5ft, so don’t bring the beginner board.
There’s no real gap in the surf here – it’s a solid, continuous run of groundswell for the full 16 days. The best of the best is that Tuesday the 8th and the run from the 13th to the 20th, with the 13th and 20th being the real diamonds.
Rusty out.
Short Range ForecastMostly dry. Warm (max 27°C on Sat afternoon, min 23°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Thu morning, min 23°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 19 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 15 |
Wave Graph | ||||||||||||||||||||
2186 | 1247 | 1484 | 1199 | 2325 | 1724 | 1624 | 1110 | 1410 | 1901 | 2573 | 3336 | 2751 | 2423 | 1428 | 2318 | 2379 | 2093 | 1933 | 1506 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 4:30AM1.52m | 6:28AM1.52m | 10:32PM1.09m | 7:56AM1.58m | 10:24PM1.17m | 9:00AM1.64m | 10:38PM1.28m | 9:52AM1.67m | 10:57PM1.40m | 10:38AM1.65m | 11:18PM1.51m | |||||||||
Low Tide | 2:05PM0.32m | 3:01PM0.23m | 1:30AM1.03m | 3:40PM0.17m | 2:56AM0.88m | 4:13PM0.17m | 3:49AM0.71m | 4:41PM0.20m | 4:34AM0.56m | 5:07PM0.28m | ||||||||||
— | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 26 | 26 | 24 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 24 | 27 | 26 | 25 | 27 | 27 | 25 |
Feels °C | 27 | 27 | 27 | 26 | 26 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 27 | 26 | 29 | 26 | 27 | 30 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 14 | SSW 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 15 |
2186 | 1247 | 1484 | 1199 | 2325 | 1724 | 1624 | 1110 | 1342 | 1491 | 2573 | 3336 | 2751 | 2423 | 1428 | 2318 | 2379 | 2093 | 1933 | 1506 | |
Swell 2 Height (m) Direction Period (s) | — | SSW 17 | SSW 18 | SSW 13 | — | SW 23 | SW 22 | SW 21 | SSW 19 | SSW 18 | SSW 12 | — | — | — | SSW 18 | — | SW 26 | SE 5 | SW 24 | SE 5 |
— | 622 | 283 | 745 | — | 21 | 119 | 433 | 1410 | 1901 | 680 | — | — | — | 835 | — | 27 | 14 | 143 | 10 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 26 | — | SW 24 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 66 | — | 197 | |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 5 | SE 4 | SSE 4 | — | — | — | — | — | — | SSE 5 | — | — | — | SE 4 | SE 4 | SE 4 | ESE 5 | SE 5 | ESE 5 |
23 | 17 | 17 | 27 | — | — | — | — | — | — | 17 | — | — | — | 15 | 16 | 11 | 59 | 30 | 28 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 144 | 0 | 0 | 0 | 0 | 144 | 179 | 0 | 179 | 144 | 0 | 179 | 144 | 0 | 0 | 144 | 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.










