Asu surfForecast / Nias / Indonesia

information circle48hr Weather and Surf, issued 12 pm Monday 18 May 2026 WIB
Forecast update in hr  min  s Forecast update imminent
Asu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Asu sea temperature is
30.3° C
(Which is slightly warmer than usual)

How big are the waves at Asu today?

The current surf forecast for Asu at 5PM is: 1.1m 15s primary swell from a South direction and 0.8m 8s secondary swell from a West direction (forecast issued at 12:00pm May 18). The wind direction is predicted to be onshore.

Time (WIB) & DateWave HeightWave Period
Morning (18 May)2.5ft (0.8m)17s
Afternoon (18 May)4ft (1.2m)16s
Evening (18 May)3.5ft (1.1m)15s

Table - waves today at Asu. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 26mm), heaviest during Mon night. Warm (max 29°C on Mon afternoon, min 28°C on Mon morning). Wind will be generally light.

Mon
18
Tuesday
19
Wednesday
20
Thu
21
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
Rating
(10 max)
3
1
0
0
1
1
2
1
1
0
0
2
2
3
1
2
2
2
1
1
2
2
2
2
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.8
S
17
1.2
S
17
1.2
S
15
1
S
15
1.2
S
15
1.2
S
15
1.2
S
14
1.2
S
14
1.1
S
14
1.1
S
14
0.9
SW
16
1.1
SW
16
1.1
SW
16
1.1
SW
16
1.1
SW
16
0.9
SW
16
1.1
SW
16
1.1
SW
16
1.1
SW
16
1.1
SW
15
1.1
SW
15
1.2
SW
15
1.1
SW
15
1.2
SW
15
Wave Graph
Metric surfscale
Energy kJ
346
822
648
440
631
614
581
565
462
442
432
567
574
574
574
432
560
546
603
595
580
640
557
631
Wind (km/h)
5
NNE
20
NNW
20
NNW
20
NNW
15
N
15
NNW
15
NNW
15
N
15
N
15
NW
20
NW
15
NW
15
NW
10
NNW
10
N
10
N
10
NNE
10
NW
15
NW
15
NW
10
WNW
10
WNW
10
NNW
10
N
glassy
on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross
on
on
on
on
on
cross-on
cross-on
High Tide
7:03PM0.49m
7:28AM0.89m
7:50PM0.45m
8:16AM0.85m
8:41PM0.43m
Low Tide
1:25PM-0.00m
00:34AM-0.01m
2:14PM0.02m
1:16AM0.01m
3:06PM0.06m
2:01AM0.06m
clear
thunderstorm
part cloud
cloud
thunderstorm
thunderstorm
thunderstorm
cloud
part cloud
part cloud
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:22
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:31
6:31
6:31
6:31
1
1
5
3
3
3
3
2
1
1
2
1
Temp °C
28
28
29
29
28
28
28
28
29
29
29
29
28
28
28
28
28
29
29
29
29
28
28
28
33
30
31
31
31
30
30
31
32
31
30
33
31
32
31
32
32
33
31
32
33
32
32
32
Swell 1
Height (m)
Direction
Period (s)
0.8
W
8
1.2
S
17
1.2
S
15
1
S
15
1.2
S
15
1.2
S
15
1.2
S
14
1.2
S
14
1.1
S
14
1.1
S
14
1.1
S
13
1.1
S
13
1.1
S
13
1.1
S
13
1.1
S
13
1.1
S
12
1.1
S
12
1.1
SW
16
1.1
SW
16
1.1
SW
15
1.1
SW
15
1.2
SW
15
1.1
SW
15
1.2
SW
15
Energy kJ
90
822
648
440
631
614
581
565
462
442
423
411
401
398
383
347
336
546
603
595
580
640
557
631
Swell 2
Height (m)
Direction
Period (s)
0.8
S
17
0.8
W
8
0.8
W
8
0.8
W
8
0.8
W
8
0.8
SW
18
0.8
SW
18
0.8
SW
18
0.8
SW
17
0.8
SW
16
0.9
SW
16
1.1
SW
16
1.1
SW
16
1.1
SW
16
1.1
SW
16
0.9
SW
16
1.1
SW
16
1.1
S
12
0.7
S
12
0.7
S
12
0.7
S
12
0.7
S
9
0.9
S
12
0.9
S
11
Energy kJ
346
88
88
86
86
375
370
370
362
326
432
567
574
574
574
432
560
336
139
136
136
76
214
196
Swell 3
Height (m)
Direction
Period (s)
0.7
S
13
0.6
SW
20
0.6
SW
19
0.6
S
11
0.5
SW
18
0.7
W
8
0.7
W
8
0.7
W
8
0.6
W
8
0.6
W
8
0.6
W
8
0.6
W
8
0.5
W
8
0.5
W
8
0.5
W
7
0.5
W
7
0.5
W
7
0.5
W
7
0.7
S
9
0.7
S
9
0.7
S
9
0.6
S
12
0.5
W
7
0.5
W
7
Energy kJ
166
239
236
91
157
66
64
64
46
44
43
42
29
29
28
28
27
26
79
78
76
98
23
24
Wind waves
Height (m)
Direction
Period (s)
0.5
W
7
Energy kJ
24
Nearest Offshore or Glassy
Rating
(10 max)
3
4
3
3
3
4
4
3
3
3
3
4
4
4
3
3
3
3
3
3
3
3
3
3
Distance (km)
0
15
15
64
15
15
15
15
15
15
64
15
15
15
15
15
15
15
15
15
15
15
15
15
Best forecast wave conditions in Nias
Rating
(10 max)
3
4
3
3
3
4
4
3
3
3
3
4
4
4
3
3
3
3
3
3
3
3
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
4
4
4
4
4
4
4
4
3
4
4
4
4
4
4
3
3
4
3
4
3
3
4
Header Global
Rating
(10 max)
4
6
5
4
4
5
5
4
4
4
4
4
4
4
4
4
5
5
4
5
5
5
5
5
  • 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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