Surf Forecasts:
Scar Reef surf forecast from 21 Jul 2026:
- Best quality surf: Friday 24 Jul, 8PM (local time) - 5ft (1.6m), 13s period, S swell with offshore winds.
- Most powerful swell: Sunday 26 Jul, 5AM (local time) - 8ft (2.5m), 8s period, SE swell with 848 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 8AM (local time) - 4.5ft (1.3m), 13s 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 Wednesday (Jul 22) at 8AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.4m and 18s. 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 8s and forecast to arrive on Sunday (Jul 26) 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 2.0m 8s period and expected on Sunday (Jul 26) at 2AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 22nd Jul) | 4.5ft (1.3m) 13s |
| Best Surf | 8PM (Fri 24th Jul) | 5ft (1.6m) 13s |
| Most Powerful | 5AM (Sun 26th Jul) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Scar Reef over the next 16 days.
The Lowdown
Alright, let's talk surf. The only spot worth talking about for the next couple of weeks is Scar Reef, and it's shaping up to be a proper run. We start on Wednesday the 22nd of July with clean, rideable waves. Water temp is about 81°F, which is pretty normal for the season.
Wednesday morning sees a 4ft SSW swell with a 13-second period, and a light SE offshore wind keeping it tidy. Wave energy is moderate, around 676, but it’s a good start. That clean trend holds through Thursday and Friday with 3-4ft SSW swell, consistent offshore winds. By Friday afternoon, the period stretches to 17 seconds on a 3ft swell – that’s proper groundswell energy for a reef, meaning smooth, lined-up waves.
The first real standout is Saturday the 25th. Morning brings a 4ft SSW swell, 15-second period, light offshore breeze, and energy jumps to 1191. Clean and working. Sunday the 26th sees a bigger 8ft SE swell, but it's only 8 seconds – short, lumpy, and powerful. Best left to the experts. Energy is high at 1411, but quality is a bit rough.
Then it gets good. Thursday the 30th of July afternoon is a beauty: 3ft SSW swell at a very long 19 seconds, with light offshore wind and energy at 1413. That’s silky, waiting-for-the-set perfection on a reef point.
The big boy comes Tuesday the 4th of August: 8ft SSW swell with an 18-second period and a massive energy reading of 5248. That’s deep, powerful groundswell. Light offshore wind from the SSE. Experts only – this is heavy water. Wednesday the 5th is glassy with a 7ft SSW swell and no wind – just a dream for those who can handle it. Thursday the 6th finishes with a 5ft SSW swell at 19 seconds, glassy conditions – a beautiful sign-off.
The whole run from the 25th through the 6th of August is stacked, but the top picks are the 30th of July afternoon for the long-period smoothness, and the 4th and 5th of August for the big, glassy groundswell. Crowds are possible here, but it’s worth the company. For a break that doesn’t always fire, this is a rare and special stretch.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 22°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Sun afternoon, min 22°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | |||||||||||||||
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) | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 581 | 346 | 553 | 545 | 494 | 312 | 357 | 317 | 446 | 610 | 515 | 500 | 802 | 410 | 314 | 385 | 200 | 183 | 322 | 322 | 576 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | cross-off | off | off | cross-off | off | off | off | off | off | off | off | off | cross-off |
High Tide | 5:22PM0.85m | 5:00AM1.45m | 5:57AM1.44m | 7:00AM1.46m | 7:58AM1.50m | 11:44PM1.02m | 8:49AM1.56m | 11:47PM1.05m | 9:33AM1.62m | 11:59PM1.09m | |||||||||||
Low Tide | 11:54AM0.65m | 8:59PM0.77m | 1:40PM0.56m | 2:50PM0.45m | 3:35PM0.34m | 4:12PM0.25m | 2:13AM0.99m | 4:44PM0.18m | 3:14AM0.94m | 5:14PM0.14m | 3:59AM0.89m | ||||||||||
 | |  | | | | | | | | | | |  |  | | | | | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 24 | 26 | 26 | 24 | 26 | 27 | 24 | 26 | 27 | 24 | 27 | 28 | 25 | 27 | 28 | 25 | 27 | 28 | 25 |
Feels °C | 25 | 25 | 24 | 24 | 24 | 23 | 25 | 25 | 24 | 27 | 27 | 24 | 28 | 27 | 25 | 28 | 28 | 26 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSE 8 | SSW 14 | SSE 9 | SSE 8 | SSW 13 | SSW 13 | SSE 8 | S 7 | SW 13 | SSE 7 | SSW 16 | SSW 15 |
| kJ | 581 | 346 | 553 | 545 | 494 | 312 | 357 | 212 | 446 | 215 | 515 | 500 | 322 | 222 | 151 | 173 | 35 | 132 | 138 | 322 | 576 |
Swell 2 Height (m) Direction Period (s) | — | SSW 16 | SW 19 | — | SW 18 | SSW 10 | SSW 18 | SSW 17 | SSW 12 | SSW 15 | SW 16 | SSW 14 | SSW 14 | SW 15 | SW 13 | SSW 12 | SSW 17 | SSW 16 | SSW 16 | SW 12 | SE 7 |
| kJ | — | 223 | 15 | — | 12 | 83 | 124 | 317 | 196 | 610 | 41 | 367 | 232 | 33 | 28 | 83 | 200 | 177 | 318 | 73 | 55 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 20 | SW 16 | SSW 9 | WSW 18 | SW 18 | WSW 16 | WSW 16 | SW 15 | — | SSW 19 | SW 14 | SSW 12 | — | SSW 12 | — | S 6 |
| kJ | — | — | — | — | — | 8 | 41 | 45 | 30 | 12 | 25 | 25 | 55 | — | 36 | 89 | 86 | — | 99 | — | 26 |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 6 | SSE 8 | SE 8 | SSE 8 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 7 | SE 7 | SE 7 | SE 7 |
| kJ | 95 | 109 | 99 | 96 | 90 | 134 | 150 | 122 | 165 | 354 | 318 | 463 | 802 | 410 | 314 | 385 | 141 | 183 | 322 | 135 | 230 |
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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