Surf Forecasts:
Scar Reef surf forecast from 8 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11PM (local time) - 6.5ft (2.0m), 17s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 11AM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,113 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11PM (local time) - 6.5ft (2.0m), 17s 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 Tuesday (Sep 08) at 11PM. The primary swell is predicted to be 2.0m and 17s period with a secondary swell of 2.1m and 12s. 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 1.6m 6s period and expected on Monday (Sep 14) at 5PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 8th Sep) | 6.5ft (2.0m) 17s |
| Best Surf | 11PM (Tue 8th Sep) | 6.5ft (2.0m) 17s |
| 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 crew, Rusty here. Let’s break down the surf ahead over the next two weeks.
We got a solid run of groundswell from the SSW on the cards, and the water temp is pretty normal for this time of year, sitting at 79°.
Tuesday afternoon is gonna be a messy one, with a cross-off breeze and a lumpy 6ft of swell. Not worth getting wet for. The wave energy is strong, but the quality is poor.
Come Wednesday morning, things are on the improve. We’re looking at a clean 8ft of SSW groundswell with a 16-second period and a nice 15 km/h cross-off breeze. This is proper juice, and the reef will be firing. It pushes 3113 of energy, so there's plenty of grunt.
Thursday and Friday, the swell eases off a touch but holds at 6ft to 7ft with the period staying long. A light offshore ESE breeze on Friday afternoon will really clean the faces up nicely.
Saturday morning is looking glassy with a perfect S wind that drops to almost nothing. 5ft of SW swell, clean as a whistle. That's a beautiful day for a paddle.
The middle of the week, from Monday to Thursday, is all about consistency. Expect 6ft to 7ft on a regular basis, with light cross-off winds keeping things fun. It's not the biggest, but it's steady and will be full of waves.
Now, the big one. Circle the 22nd of September on the calendar. A serious pulse of energy is due. We're talking a big, powerful SSW groundswell that starts at 10ft in the morning and builds to a solid 12ft by Tuesday afternoon. The combined energy reading is enormous, hitting 6567. With a period of 18 seconds, this is a true groundswell. For a reef setup like this, that long period will create some absolute drainers. The wind is looking offshore and light, which is about as good as it gets. This is a day for the experts only, as anything over 8ft is demanding. It's a long-range call, but it's looking promising.
That swell holds in the 10ft range through Wednesday the 23rd, with light winds and plenty of power. It's a huge finish to the outlook.
So, there you have it. The first week is filled with clean, fun waves. But that Tuesday the 22nd is the winner. Big, powerful, and potentially perfect.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 23°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri afternoon, min 23°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1901 | 2573 | 3113 | 2663 | 2295 | 1279 | 2376 | 2084 | 1799 | 1776 | 1289 | 940 | 833 | 1935 | 1809 | 2823 | 2166 | 1764 | 1494 | 1456 |
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 | cross-off | cross-off | off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 10:24PM1.17m | 9:00AM1.64m | 10:38PM1.28m | 9:52AM1.67m | 10:57PM1.40m | 10:38AM1.65m | 11:18PM1.51m | 11:20AM1.58m | 11:40PM1.60m | 11:59AM1.47m | 00:02AM1.65m | 12:37PM1.33m | 00:25AM1.66m | |||||||
Low Tide | 3:40PM0.17m | 2:56AM0.88m | 4:13PM0.17m | 3:49AM0.71m | 4:41PM0.20m | 4:34AM0.56m | 5:07PM0.28m | 5:15AM0.43m | 5:30PM0.37m | 5:55AM0.35m | 5:52PM0.46m | 6:34AM0.30m | 6:11PM0.56m | |||||||
 |  | | | |  | |  | | | | | | | | | | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 26 | 26 | 25 | 27 | 27 | 25 | 27 | 28 | 25 | 27 | 28 | 25 | 27 | 28 | 25 | 27 | 28 | 25 |
Feels °C | 27 | 27 | 27 | 27 | 27 | 29 | 28 | 27 | 29 | 29 | 27 | 30 | 31 | 28 | 29 | 29 | 27 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 |
| kJ | 1301 | 2573 | 3113 | 2663 | 2295 | 1279 | 2376 | 2084 | 1799 | 1776 | 1289 | 940 | 833 | 1935 | 1809 | 2823 | 2166 | 1764 | 1494 | 1456 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 12 | — | — | — | SSW 18 | — | SW 26 | SSW 26 | SW 24 | SW 24 | SW 21 | SE 6 | SSW 14 | SW 15 | — | SE 6 | SE 6 | SE 6 | SSE 6 |
| kJ | 1901 | 811 | — | — | — | 845 | — | 27 | 66 | 143 | 197 | 763 | 38 | 845 | 767 | — | 47 | 59 | 64 | 34 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SE 6 | SW 21 | SE 6 | SE 7 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 28 | 445 | 52 | 36 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 5 | — | SSE 5 | SSE 4 | SE 4 | SSE 4 | SE 4 | SE 4 | SE 5 | SE 5 | SE 5 | ESE 6 | SE 6 | — | SE 7 | SE 6 | SE 6 | SE 7 | SE 6 | SE 6 |
| kJ | 21 | — | 24 | 21 | 16 | 13 | 16 | 11 | 10 | 31 | 18 | 99 | 95 | — | 114 | 64 | 122 | 158 | 165 | 67 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 4 | 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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