Scar Reef surf break

Scar Reef surfForecast / Sumbawa / Indonesia

information circle12 Day Weather and Surf, issued 7 pm Monday 15 Dec 2025 WITA
Forecast update in hr  min  s Forecast update imminent
Scar Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Scar Reef sea temperature is
29.5° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Scar Reef this week:

The surf forecast for Scar Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 16) at 5AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.8m and 6s. Another secondary swell of 1.1m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Scar Reef in the next 12 days are 1.2m 16s and forecast to arrive on Thursday (Dec 18) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Sunday (Dec 21) at 5AM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 16th Dec)3ft (0.9m) 11s
Best Surf 5AM (Tue 16th Dec)3ft (0.9m) 11s
Most Powerful11AM (Thu 18th Dec)4ft (1.2m) 16s

Table - best surf conditions forecast for Scar Reef over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 27mm), heaviest during Mon night. Warm (max 30°C on Wed afternoon, min 25°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 21mm), heaviest during Fri afternoon. Warm (max 29°C on Sat afternoon, min 26°C on Thu night). Wind will be generally light.

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Mon
22
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
1
1
1
0
0
2
1
1
2
2
2
2
1
1
0
0
0
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1
SSW
1
SW
1
SW
1
SW
0.8
SW
0.8
SW
0.9
SW
1.2
SW
1.2
SW
1.2
SW
1.1
SW
1.1
SW
1
SW
1.1
SW
1.2
SW
1
SW
0.9
SSW
0.9
SSW
0.9
SSW
0.9
SSW
0.6
SW
Period(s) (?)111113131616161615141413131212111010101015
Wave
Graph
(?)Metric surfscale
Energy kJ (?)261246331326314371400683648598447398326386386233135160160176176
Wind
(km/h)
10
NNW
0
WNW
5
WSW
10
NNE
10
NNE
15
NNE
5
NNE
10
NNW
5
NNE
5
NE
5
W
5
NE
5
NE
5
SW
10
SW
10
WSW
15
WSW
20
WSW
15
W
15
WSW
15
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
glasscross-
on
crosscross-
on
cross-
on
glasscross-
on
crosscross-
off
glassglassglasscrosscrosscross-
on
crosscrosscross-
on
crosscross
High Tide
/ height (m)
9:49AM
0.99
8:12PM
1.57
10:37AM
1.02
8:44PM
1.62
11:15AM
1.04
9:18PM
1.66
11:48AM
1.05
9:52PM
1.70
12:19PM
1.05
10:26PM
1.73
12:50PM
1.05
11:00PM
1.74
1:23PM
1.06
Low Tide
/ height (m)
3:23AM
0.42
1:27PM
0.88
3:56AM
0.29
2:13PM
0.91
4:28AM
0.19
2:53PM
0.91
5:00AM
0.11
3:28PM
0.90
5:33AM
0.07
4:01PM
0.89
6:07AM
0.06
4:33PM
0.89
6:40AM
0.07
5:06PM
0.89
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Mon
22
Sunrise-5:48--5:48--5:48--5:50--5:50--5:50--5:50-
Sunset--6:27--6:27--6:28--6:28--6:29--6:30--6:30
thunderstorm
rain showers
thunderstorm
rain showers
clear
thunderstorm
thunderstorm
clear
rain showers
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
15131-14-23-54112231285
Temp. °C252728272930272929272828272829282929272828
Feels °C (?)293233313131313232313233313232323131303030
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 12 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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