Surf Forecasts:
Scar Reef surf forecast from 2 Sep 2026:
- Best quality surf: Sunday 6 Sep, 5AM (local time) - 6ft (1.9m), 14s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 5PM (local time) - 8ft (2.5m), 18s period, SSW swell with 4,330 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 8PM (local time) - 6ft (1.9m), 16s 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 Wednesday (Sep 02) at 8PM. The primary swell is predicted to be 1.9m and 16s period. 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 Tuesday (Sep 08) 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 1.2m 5s period and expected on Thursday (Sep 03) at 8AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 2nd Sep) | 6ft (1.9m) 16s |
| Best Surf | 5AM (Sun 6th Sep) | 6ft (1.9m) 14s |
| Most Powerful | 5PM (Tue 8th Sep) | 8ft (2.5m) 18s |
Table - best surf conditions forecast for Scar Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming down the pipe for Scar Reef.
We’ve got a solid run of surf ahead. The first proper swell shows up on Wednesday afternoon, kicking off a stretch that’s got waves for days. The water is sitting at 80°, which is pretty much dead average for this time of year, so nothing weird going on there.
Wednesday afternoon sees the first pulse: a 7ft SW groundswell with a long 16-second period. The wind is light and offshore from the ESE, so the reef will be clean and lined up. The combined energy is strong at 2053, and this is a proper reef-and-point setup, so that long period will peel nicely. This is good for experienced surfers only – that size and power on a reef is no joke.
Thursday stays clean with a dropping swell from 5ft to 5ft SW, still with that long 16-second period. Winds are light to gentle, cross-off, so the wave faces will stay tidy. Good, but not the standout.
Friday drops a little more to 4ft to 5ft SW, period backing off to 14 seconds. Still clean, with offshore winds in the afternoon. A nice, mellow day for the crew who want it a bit smaller.
Saturday picks back up – 6ft SSW on the morning, 6ft SSW in the afternoon, period climbing back to 16 seconds. Winds are cross-off, moderate. The energy is ramping up again, but the wind is a bit stiffer.
Sunday and Monday see solid 7ft to 7ft SSW swell, but the wind is up to 12 mph from the south, cross-off. The surf is there, but the wind is making it a bit more of a handful. Not the best windows.
Now, here’s where the real standouts are. Tuesday, the 8th of September – morning session is a gem. 5ft SSW swell, but check the period: 19 seconds – that’s very long period groundswell. The energy is a massive 2530, and with a light S breeze, it’s clean. For a reef point, that long period means super consistent, deep-water lines. This is a top pick for the skilled crew.
But the absolute crown jewel of this whole forecast is Sunday, the 13th of September. The morning delivers a 6ft SW swell, 18-second period, combined energy of 3267. The wind is light, cross-off. Then the afternoon is even better: 7ft SW, 17-second period, clean offshore ESE breeze at 6 mph. That afternoon session is going to be mint – big, powerful, and glassy. This is the session to circle on the calendar.
Monday the 14th and Tuesday the 15th are also excellent. Tuesday the 15th has 8ft SSW swell, 16 seconds, and light offshore SSE wind. That’s big, powerful, and clean – definitely for experts only. The energy is 2924. Everything after that stays good through the 17th, with solid 5ft to 7ft SW swell and clean conditions, but nothing beats that Sunday the 13th.
The only thing to keep in mind is that Scar Reef can get crowded sometimes, so get there early for the standout days. Also, this is a reef and point, so the long period swells will be drawing in nicely, but it’s an advanced wave.
Overall, we’ve got no gaps – the surf is on from the 2nd all the way through the 17th. The best of the best is that Sunday the 13th, with Tuesday the 8th as a close second. Get on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Wed afternoon, min 22°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat afternoon, min 23°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 16 | SW 16 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 14 | SSW 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 19 | SSW 18 | SSW 17 |
Wave Graph | ||||||||||||||||||||
2053 | 1532 | 1297 | 1041 | 746 | 726 | 731 | 672 | 1258 | 1743 | 1247 | 1624 | 1184 | 2177 | 1797 | 1748 | 1326 | 1410 | 4330 | 4031 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 1:36AM1.65m | 2:48PM0.93m | 2:12AM1.63m | 4:58PM0.79m | 3:02AM1.57m | 4:30AM1.52m | 6:28AM1.52m | 10:32PM1.09m | 7:56AM1.58m | 10:24PM1.17m | ||||||||||
Low Tide | 6:56PM0.64m | 8:50AM0.41m | 7:05PM0.72m | 10:09AM0.44m | 6:38PM0.78m | 12:17PM0.42m | 2:05PM0.32m | 3:01PM0.23m | 1:30AM1.03m | 3:40PM0.17m | 2:56AM0.88m | |||||||||
— | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 24 | 27 | 28 | 24 | 26 | 27 | 24 | 26 | 27 | 24 | 27 | 27 | 25 | 26 | 26 | 24 | 26 | 25 | 24 |
Feels °C | 28 | 25 | 27 | 27 | 25 | 28 | 26 | 25 | 27 | 26 | 26 | 27 | 26 | 26 | 25 | 25 | 24 | 26 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 18 | SSW 17 |
2053 | 1532 | 1297 | 1041 | 746 | 726 | 731 | 672 | 1258 | 1743 | 1247 | 1624 | 998 | 2177 | 1797 | 1748 | 1326 | 1120 | 4330 | 4031 | |
Swell 2 Height (m) Direction Period (s) | — | — | SE 6 | — | — | SE 6 | — | SSW 18 | — | — | SSW 17 | SSW 18 | SSW 16 | — | SW 23 | SW 22 | SW 21 | SSW 19 | — | — |
— | — | 24 | — | — | 31 | — | 348 | — | — | 622 | 280 | 1184 | — | 20 | 73 | 441 | 1410 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 13 | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | 62 | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 5 | SSE 5 | ESE 6 | SE 5 | SE 5 | SE 6 | SSE 5 | SSE 5 | SE 5 | SSE 5 | SE 5 | — | SE 5 | — | — | — | — | — | — | SSE 8 |
47 | 14 | 84 | 36 | 18 | 92 | 51 | 28 | 27 | 48 | 31 | — | 23 | — | — | — | — | — | — | 140 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 180 | 0 | 144 | 180 | 0 | 180 | 0 | 0 | 0 | 145 | 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.











