Asu surfForecast / Nias / Indonesia

information circle12 Day Weather and Surf, issued 12 pm Friday 19 Dec 2025 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
29.1° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Asu this week:

The surf forecast for Asu over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 19) at 10PM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.4m and 18s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Asu in the next 12 days are 1.0m 18s and forecast to arrive on Friday (Dec 26) at 7PM. Winds are predicted to be offshore at the time the swell arrives.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10PM (Fri 19th Dec)3.5ft (1.0m) 13s
Best Surf 4PM (Fri 26th Dec)2.5ft (0.8m) 18s
Most Powerful 7PM (Fri 26th Dec)3.5ft (1.0m) 18s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 10mm), heaviest on Sun night. Warm (max 28°C on Fri afternoon, min 26°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Wed night. Warm (max 28°C on Mon afternoon, min 26°C on Tue night). Wind will be generally light.

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
2
2
0
2
2
0
1
2
2
2
2
1
2
2
2
2
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.1
SW
0.9
SSW
1
SSW
0.8
SSW
0.8
SSW
1
SSW
0.9
SSW
0.9
SSW
0.7
SW
0.9
S
0.8
SW
0.7
SW
0.8
SW
0.8
SW
0.8
SW
0.6
SSW
0.6
SW
0.7
SW
0.5
SSW
0.8
SW
0.8
SW
Period(s) (?)131312101211101015101414141313151314171414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)394295314116174256160137220178251211221215205142138186168231248
Wind
(km/h)
5
N
10
WNW
5
NNW
5
N
10
W
5
NW
0
NE
10
W
10
SW
10
ENE
5
SSW
5
SSE
0
SE
10
SW
5
S
5
NE
10
SSW
5
SW
10
WNW
25
SW
35
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on
glassglasscross-
on
glassglasscross-
on
crosscross-
off
cross-
off
glassglasscrossglassglasscross-
off
glasscross-
on
crosscross
High Tide
/ height (m)
5:52PM
0.74
6:09AM
0.41
6:26PM
0.76
6:43AM
0.42
6:59PM
0.77
7:16AM
0.43
7:32PM
0.77
7:51AM
0.45
8:04PM
0.77
8:29AM
0.46
8:37PM
0.75
9:11AM
0.48
9:11PM
0.72
Low Tide
/ height (m)
12:36AM
0.08
11:30AM
0.06
1:08AM
0.07
12:05PM
0.06
1:39AM
0.07
12:39PM
0.07
2:11AM
0.08
1:14PM
0.09
2:44AM
0.09
1:50PM
0.13
3:17AM
0.10
2:31PM
0.17
3:53AM
0.11
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Sunrise6:24--6:24--6:26--6:26--6:26--6:26--6:28--
Sunset-6:29--6:30--6:30--6:30--6:30--6:31--6:31-
clear
part cloud
rain showers
thunderstorm
clear
rain showers
clear
part cloud
rain showers
thunderstorm
clear
rain showers
clear
clear
thunderstorm
thunderstorm
part cloud
rain showers
thunderstorm
part cloud
thunderstorm
Rain (mm)
--41-1--42-1--31-46-3
Temp. °C272828282828272828272828272828272828272727
Feels °C (?)313132323032323031303132323132313131292726
  • 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 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 12 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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