Asu surfForecast / Nias / Indonesia

information circle48hr Weather and Surf, issued 6 am Wednesday 20 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 2PM is: 1.1m 16s primary swell from a Southwest direction and 1.0m 12s secondary swell from a South direction (forecast issued at 06:00am May 20). The wind direction is predicted to be onshore.

Time (WIB) & DateWave HeightWave Period
Morning (20 May)3.5ft (1.1m)16s
Afternoon (20 May)3.5ft (1.1m)16s
Evening (20 May)4ft (1.2m)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 20mm), heaviest during Thu morning. Warm (max 29°C on Wed morning, min 27°C on Thu afternoon). Wind will be generally light.

Wednesday
20
Thursday
21
Friday
22
Sat
23
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
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
Rating
(10 max)
0
1
1
0
0
0
1
1
0
1
1
1
0
0
0
0
0
1
1
0
0
0
0
0
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)
1.1
SW
16
0.9
SW
16
1.1
SW
16
1.1
SW
16
1.1
SW
16
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.1
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.3
SW
16
1.3
SW
15
1.1
SW
15
1.1
SW
14
1.1
SW
14
1.3
SW
14
1.3
SW
15
1.3
SW
15
1.3
SW
15
Wave Graph
Metric surfscale
Energy kJ
574
432
560
546
603
674
657
640
631
631
535
614
614
614
666
773
753
542
528
520
676
685
685
714
Wind (km/h)
15
NNW
10
NNW
15
NNW
20
NW
20
NW
20
NW
15
NW
15
NNW
15
NW
15
NNW
15
N
15
NW
20
WNW
25
W
25
W
25
W
15
WNW
15
NNW
10
N
20
NW
20
NW
15
WNW
20
WNW
15
NW
on
cross-on
cross-on
on
on
on
on
on
on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
on
on
cross-on
on
on
on
on
on
High Tide
8:16AM0.85m
8:41PM0.43m
9:08AM0.79m
9:40PM0.41m
10:03AM0.72m
10:53PM0.41m
Low Tide
1:16AM0.01m
3:06PM0.06m
2:01AM0.06m
4:04PM0.10m
2:52AM0.13m
5:08PM0.14m
thunderstorm
clear
part cloud
clear
part cloud
part cloud
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
part cloud
part cloud
part cloud
cloud
cloud
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
1
1
1
3
2
1
1
1
3
3
Temp °C
29
28
29
29
29
29
29
29
29
28
28
28
28
27
28
28
28
28
28
29
29
29
29
28
32
31
32
31
30
31
32
32
31
31
31
31
29
28
29
28
29
29
30
30
30
31
30
30
Swell 1
Height (m)
Direction
Period (s)
1.1
S
13
1.1
S
12
1.1
S
12
1.1
SW
16
1.1
SW
16
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.1
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.3
SW
16
1.3
SW
15
1.1
SW
15
1.1
SW
14
1.1
SW
14
1.3
SW
14
1.3
SW
15
1.3
SW
15
1.3
SW
15
Energy kJ
383
347
336
546
603
674
657
640
631
631
535
614
614
614
666
773
753
542
528
520
676
685
685
714
Swell 2
Height (m)
Direction
Period (s)
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
0.9
S
12
0.9
S
12
0.9
S
11
0.8
S
11
0.8
S
11
0.8
S
11
0.8
S
11
0.7
S
11
0.8
WNW
7
0.9
W
7
1
W
7
1
W
7
1
W
7
0.9
W
8
0.9
WNW
8
0.9
WNW
8
0.9
WNW
8
Energy kJ
574
432
560
336
139
136
136
217
214
199
146
144
144
144
108
60
77
93
96
108
95
107
112
112
Swell 3
Height (m)
Direction
Period (s)
0.5
W
7
0.5
W
7
0.5
W
7
0.5
W
7
0.7
S
9
0.7
S
9
0.6
S
9
0.4
WNW
7
0.4
WNW
7
0.5
W
7
0.6
SW
17
0.5
WNW
7
0.1
W
15
0.1
W
11
0.1
W
18
0.6
S
9
0.7
S
10
0.6
S
10
0.6
S
10
0.6
S
10
0.6
S
9
0.6
S
9
0.5
S
9
0.5
S
9
Energy kJ
28
28
27
26
79
78
56
15
15
24
232
25
4
2
6
61
89
65
65
64
61
60
41
40
Wind waves
Height (m)
Direction
Period (s)
0.5
WNW
7
0.5
WNW
7
0.5
WNW
7
0.6
WNW
6
0.8
WNW
7
0.8
WNW
7
1
WNW
7
Energy kJ
27
27
26
33
50
60
93
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
2
3
3
3
3
3
3
3
2
3
3
3
3
3
3
3
3
2
3
3
Distance (km)
15
15
15
64
64
64
15
15
15
15
15
15
76
64
64
372
64
15
15
64
64
64
64
15
Best forecast wave conditions in Nias
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
3
3
2
3
3
3
3
3
3
3
3
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
4
3
4
4
4
4
3
3
4
4
3
3
4
4
4
4
4
3
4
4
4
4
4
Header Global
Rating
(10 max)
4
5
5
5
5
4
4
5
5
5
5
5
5
5
4
4
4
4
5
7
7
7
7
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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