Asu Surf Break

Lat Long: 0.92° N 97.25° E

Asu Surf Forecast and Surf Report

Issued: 12 pm 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Asu sea temperature is
29.8° C
0.6° 

Asu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Asu surf forecast from 12 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 7PM (local time) - 6ft (1.8m), 16s period, SSW swell with offshore winds.
  • Most powerful swell: Wednesday 19 Aug, 1AM (local time) - 8ft (2.5m), 19s period, SW swell with 4,604 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 7PM (local time) - 6ft (1.8m), 16s period with SSW swell.

Best Forecast Surf Conditions for Asu this week:

The surf forecast for Asu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 7PM. The primary swell is predicted to be 1.8m and 16s period with a secondary swell of 0.3m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Asu in the next 16 days are 2.5m 19s and forecast to arrive on Wednesday (Aug 19) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Sunday (Aug 16) at 10PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Wed 12th Aug)6ft (1.8m) 16s
Best Surf 7PM (Tue 18th Aug)6ft (1.8m) 16s
Most Powerful 1AM (Wed 19th Aug)8ft (2.5m) 19s

Table - best surf conditions forecast for Asu over the next 16 days.


Short Range Forecast

Heavy rain (total 34mm), heaviest during Wed night. Warm (max 29°C on Wed afternoon, min 25°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 13mm), heaviest on Sat night. Warm (max 28°C on Sat afternoon, min 26°C on Sat morning). Wind will be generally light.

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
4
4
4
2
1
3
4
4
4
3
3
3
2
3
4
4
4
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
S
16
1.8
SSW
16
1.7
SSW
16
1.6
SSW
15
1.5
S
14
1.4
SSW
18
1.7
SSW
17
1.6
S
16
1.8
S
15
1.5
S
14
1.4
S
14
1.2
S
13
1.3
S
14
1.3
S
14
0.9
SW
15
0.9
SW
14
0.9
SW
14
1.1
SSW
18
1.6
SSW
17
1.5
SW
19
2.5
SW
19
Wave Graph
Metric surfscale
Energy kJ
1811
1664
1493
1184
905
1259
1708
1289
1434
902
757
492
691
607
309
346
301
785
1405
1609
4604
Wind (km/h)
10
ESE
15
S
10
SSE
10
SSE
5
SSW
5
ESE
10
NNE
15
WNW
15
NE
5
ENE
5
WSW
5
WSW
5
NNE
0
NNE
5
NE
10
NNE
5
S
10
SSE
15
ESE
10
SSE
10
S
Wind State
cross-off
cross-off
cross-off
off
cross-off
glassy
cross-on
on
cross
glassy
glassy
glassy
cross-on
glassy
glassy
cross
glassy
cross-off
cross-off
cross-off
cross-off
High Tide
6:02PM0.53m
6:16AM0.87m
6:42PM0.60m
6:55AM0.86m
7:21PM0.65m
7:31AM0.82m
7:58PM0.69m
8:05AM0.75m
8:34PM0.70m
8:36AM0.67m
9:11PM0.69m
9:04AM0.58m
9:49PM0.65m
Low Tide
11:38PM0.04m
12:54PM0.01m
00:24AM0.03m
1:23PM0.00m
1:07AM0.04m
1:50PM0.01m
1:48AM0.07m
2:16PM0.03m
2:28AM0.11m
2:40PM0.05m
3:08AM0.16m
3:03PM0.07m
3:50AM0.21m
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
cloud
cloud
thunderstorm
thunderstorm
thunderstorm
light rain
thunderstorm
part cloud
part cloud
part cloud
thunderstorm
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:31
6:31
6:31
6:30
6:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:39
6:39
6:39
6:38
6:38
6:38
6:38
 mm
2
11
5
2
8
4
2
7
3
1
1
1
2
8
Temp °C
28
29
28
28
28
28
26
26
26
27
28
28
27
27
27
28
28
28
28
28
28
Feels °C
32
33
31
32
32
32
30
28
29
31
32
32
30
31
31
32
32
32
30
31
32
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Asu Surf forecast

The above surf forecast table for Asu provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Asu can be found by selecting the local surf guide option on the grey menu. Our Asu 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 (Asu) 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 Asu 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.

Are you planning a holiday in Nias? If you are looking for accommodation near Asu, camping, hotels and holiday cottages in Nias, consider staying in Afia which is 60 km (37 miles) away.

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