
Surf Forecasts:
Scar Reef surf forecast from 10 Aug 2026:
- Best quality surf: Monday 10 Aug, 5PM (local time) - 10ft (3.0m), 18s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 11 Aug, 2AM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,927 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 5PM (local time) - 10ft (3.0m), 18s 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 10) at 5PM. The primary swell is predicted to be 3.0m and 18s 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 3.0m 17s and forecast to arrive on Tuesday (Aug 11) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Monday (Aug 17) at 11AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 10th Aug) | 10ft (3.0m) 18s |
| Best Surf | 5PM (Mon 10th Aug) | 10ft (3.0m) 18s |
| Most Powerful | 2AM (Tue 11th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Scar Reef over the next 16 days.
The Lowdown
Right, let me have a proper look at this. It’s all about Scar Reef.
We’ve got a pretty decent run ahead. The water temp is bang on normal for this time of year at 80°, so nothing freaky going on there. Good.
The fun kicks off Monday morning, the 10th. Scar Reef (reef and point) is already pumping with a clean 5ft SSW groundswell, period hanging around 19 seconds – that’s proper energy. The combined swell energy is a solid 3322 (moderate), and with a light cross-off breeze, it’s gonna be clean. This swell is long-period though, so at a reef and point break like this, it should line up beautifully. That first session is a real standout for the experienced surfer. By Monday afternoon, the swell jumps to 10ft, still clean with an offshore wind. That’s big, powerful stuff – definitely for experts only, but the quality is there.
Tuesday the 11th keeps the power going: 10ft in the morning and 8ft in the afternoon, both clean. The swell period is still long, in the 16-17 second range, keeping the energy high (4774 and 4382). The breeze gets a bit stronger by the afternoon, but it’s still cross-off, so it’s manageable.
Wednesday the 12th looks excellent. Morning has a 6ft SSW swell, period 14 seconds, with a gentle offshore wind. The energy is still moderate at 2440, and the conditions are described as gentle offshore and clean. By the afternoon, it’s 7ft with a light offshore breeze – glassy perfection. This stretch from Wednesday arvo through Thursday and into Friday is very, very good. Consistent 7ft to 8ft SSW swell, light winds, and moderate energy readings (around 2371 to 3127). The water will be clean and the reef will be working.
Saturday the 15th and Sunday the 16th are still solid – solid 7ft to 7ft SSW groundswell with gentle breezes. The energy is still there (2630, 2823, 2164). This is a long, reliable pulse.
Then we hit a little drop. Monday the 17th and Tuesday the 18th morning, the swell backs off to 5ft to 4ft. The energy drops to 975 and 1894, which is still surfable, but it’s not the main event. However, Tuesday afternoon (18th) the swell picks back up to 6ft from the SW with a period of 16 seconds and a glassy offshore wind – a sneaky good session.
The real standout of the second week? Wednesday the 19th. We get a big 8ft SW swell, period 18 seconds, combined energy of 3967. The morning has a light cross-off, the afternoon a moderate offshore. This is a long, powerful, clean groundswell hitting the reef just right. It’s big (over 8ft), so it’s for experts, but it looks magic.
Thursday the 20th keeps that 8ft SW swell going, with a stiff 16 mph offshore in the afternoon keeping it groomed. Friday the 21st and Saturday 22nd are still producing clean, 6ft to 7ft surf. Then look out – Sunday the 23rd afternoon we get a monster 10ft SSW swell, period 18 seconds, with a combined energy of 5100 (strong). Light offshore wind. That’s a massive, clean day.
Monday the 24th holds at 8ft with a glassy morning. Tuesday the 25th fades a bit to 7ft, but still clean.
The top pick for the whole period is a toss-up. The Monday 10th morning session is a fantastic start with a clean, long-period groundswell. But the late-arriving pulse on Sunday the 23rd afternoon, with that 10ft, 18-second groundswell and light offshore, is the real show-stopper for the experts.
This break can get crowded sometimes, so get in early.
Overall, we’re looking at a long, consistent run of quality swell. Get on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 23°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Thu morning, min 23°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 16 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph | |||||||||||||||||||||
1867 | 4951 | 5927 | 4774 | 2823 | 3079 | 1423 | 2143 | 1065 | 2961 | 3127 | 2801 | 2028 | 1496 | 1275 | 2594 | 2823 | 2719 | 2164 | 1766 | 1337 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | cross-off | off | off | off | cross-off | cross-off | off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | off | cross-off |
High Tide | 11:09PM1.05m | 8:54AM1.78m | 11:21PM1.13m | 9:50AM1.83m | 11:42PM1.21m | 10:40AM1.83m | 00:06AM1.31m | 11:25AM1.76m | 00:31AM1.41m | 12:08PM1.64m | 00:57AM1.49m | 12:49PM1.47m | 1:23AM1.54m | ||||||||
Low Tide | 4:00PM0.07m | 2:12AM0.97m | 4:39PM0.01m | 3:28AM0.87m | 5:14PM0.01m | 4:26AM0.75m | 5:45PM0.06m | 5:17AM0.64m | 6:14PM0.16m | 6:05AM0.56m | 6:39PM0.28m | 6:51AM0.52m | 7:01PM0.40m | ||||||||
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 27 | 24 | 26 | 26 | 24 | 25 | 26 | 24 | 25 | 26 | 25 | 26 | 27 | 25 |
Feels °C | 28 | 27 | 25 | 27 | 25 | 25 | 27 | 26 | 25 | 28 | 26 | 25 | 26 | 26 | 27 | 27 | 26 | 28 | 27 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 16 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
1455 | 4951 | 5927 | 4774 | 2823 | 3079 | 1423 | 2143 | 1065 | 2961 | 3127 | 2801 | 2028 | 1496 | 1275 | 2594 | 2823 | 2719 | 2164 | 1766 | 1337 | |
Swell 2 Height (m) Direction Period (s) | SSW 19 | — | — | — | SSW 19 | S 24 | SSW 17 | — | SSW 18 | — | — | SSE 9 | SSE 8 | SSW 21 | SSW 19 | — | — | — | — | — | SE 5 |
1867 | — | — | — | 1559 | 11 | 975 | — | 907 | — | — | 64 | 62 | 385 | 904 | — | — | — | — | — | 13 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 21 | — | — | — | — | SSW 24 | SSW 21 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | 42 | — | — | — | — | 54 | 180 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 4 | SE 4 | SE 5 | — | S 13 | E 4 | SE 5 | SSE 9 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 4 | — | — | SE 5 | SE 5 |
— | — | — | — | 29 | 29 | 37 | — | 961 | 15 | 49 | 138 | 101 | 59 | 32 | 36 | 15 | — | — | 23 | 28 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 145 | 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.











