Asu surfForecast / Nias / Indonesia

information circle48hr Weather and Surf, issued 12 pm Thursday 21 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
30.2° C
(Which is normal for this time of year)

How big are the waves at Asu today?

The current surf forecast for Asu at 6PM is: 1.2m 15s primary swell from a Southwest direction and 0.8m 11s secondary swell from a South direction (forecast issued at 12:00pm May 21). The wind direction is predicted to be onshore.

Time (WIB) & DateWave HeightWave Period
Morning (21 May)3.5ft (1.1m)15s
Afternoon (21 May)4ft (1.2m)15s
Evening (21 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

Moderate rain (total 13mm), heaviest on Thu afternoon. Warm (max 29°C on Thu morning, min 28°C on Thu afternoon). Wind will be generally light.

Thu
21
Friday
22
Saturday
23
Sun
24
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)
0
0
0
1
1
1
1
1
1
0
1
1
2
2
1
1
1
0
0
0
0
0
0
1
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
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.3
SW
15
1.3
SW
16
1.3
SW
15
1.3
SW
15
1.2
SW
14
1.1
SW
14
1.3
SW
14
1.3
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
14
1.2
SW
14
1.2
SW
14
1.2
SW
14
1.2
SW
14
1.2
SW
14
1.1
SW
14
1.1
SW
14
Wave Graph
Metric surfscale
Energy kJ
535
614
614
614
744
773
753
686
598
520
746
685
685
714
753
763
630
548
548
564
581
573
485
418
Wind (km/h)
15
NW
20
NW
15
NW
15
NW
10
WNW
15
W
15
WNW
10
NNW
10
NNW
15
NW
15
NW
15
WNW
10
WNW
5
W
10
NW
10
N
10
N
20
NW
20
NW
20
NW
20
NW
20
NW
20
NNW
15
NNW
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
on
cross-on
cross-on
on
on
on
on
on
on
cross-on
High Tide
9:40PM0.41m
10:03AM0.72m
10:53PM0.41m
11:05AM0.65m
00:20AM0.44m
Low Tide
4:04PM0.10m
2:52AM0.13m
5:08PM0.14m
3:57AM0.21m
6:17PM0.17m
5:34AM0.28m
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
thunderstorm
part cloud
clear
part cloud
part cloud
part cloud
clear
cloud
part cloud
part cloud
<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
2
3
3
1
3
Temp °C
29
29
29
28
28
29
29
28
28
29
29
29
29
28
28
28
28
29
29
29
29
29
28
28
32
31
32
31
31
32
32
31
31
32
32
32
33
32
31
31
31
30
30
31
31
31
30
30
Swell 1
Height (m)
Direction
Period (s)
1.1
SW
15
1.2
SW
15
1.2
SW
15
1.2
SW
15
1.3
SW
15
1.3
SW
16
1.3
SW
15
1.3
SW
15
1.2
SW
14
1.1
SW
14
1.3
SW
14
1.3
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
14
1.2
SW
14
1.2
SW
14
1.2
SW
14
1.2
SW
14
1.2
SW
14
1.1
SW
14
1.1
SW
14
Energy kJ
535
614
614
614
744
773
753
686
598
520
746
685
685
714
753
763
630
548
548
564
581
573
485
418
Swell 2
Height (m)
Direction
Period (s)
0.8
S
11
0.8
S
11
0.8
S
11
0.8
S
11
0.7
S
11
0.7
WNW
7
0.7
WNW
7
0.7
WNW
7
0.8
W
7
0.8
W
7
0.8
W
7
0.8
WNW
8
0.8
WNW
8
0.8
WNW
8
0.8
WNW
8
0.8
WNW
8
0.8
WNW
8
0.8
WNW
8
0.8
WNW
8
0.9
WNW
8
0.8
WNW
8
0.8
WNW
8
0.9
WNW
8
0.9
WNW
8
Energy kJ
146
144
144
144
108
48
49
52
66
66
70
77
83
83
83
83
87
90
90
96
76
76
99
101
Swell 3
Height (m)
Direction
Period (s)
0.6
WNW
5
0.6
WNW
6
0.6
WNW
6
0.6
WNW
6
0.6
WNW
7
0.6
S
9
0.7
S
10
0.7
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
0.5
S
9
0.5
S
9
0.5
S
9
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.4
S
8
Energy kJ
22
29
31
33
34
61
87
89
65
64
61
60
41
40
39
38
36
35
35
35
35
34
33
21
Wind waves
Height (m)
Direction
Period (s)
Energy kJ
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Distance (km)
15
64
64
15
15
15
15
15
15
15
15
15
15
15
15
15
15
64
64
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
3
3
3
3
3
3
3
3
3
3
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
3
3
3
4
4
4
4
3
3
3
3
4
4
3
3
3
3
3
3
3
3
3
3
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
4
5
7
7
7
6
5
7
5
7
7
8
8
7
6
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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