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Surf Forecasts:
Asu surfForecast / Nias / Indonesia
16 Day Weather and Surf, issued 6 am Sunday 19 Apr 2026 WIBForecast 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 slightly warmer than usual)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 Tuesday (Apr 21) at 7PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.5m and 8s. Another secondary swell of 1.4m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Asu in the next 16 days are 1.6m 16s and forecast to arrive on Sunday (Apr 26) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 21st Apr) | 3ft (0.9m) 13s |
| Best Surf | 1AM (Thu 23rd Apr) | 3.5ft (1.1m) 18s |
| Most Powerful | 10AM (Sun 26th Apr) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Asu over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 34mm), heaviest during Tue morning. Warm (max 29°C on Sun afternoon, min 26°C on Tue morning). Mainly fresh winds. | Days 3-6 Weather Summary Some drizzle, heaviest during Thu night. Warm (max 29°C on Thu afternoon, min 27°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 13 | 15 | 15 | 14 | 13 | 13 | 13 | 19 | 18 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 19 | 18 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 362 | 346 | 286 | 264 | 204 | 272 | 307 | 282 | 307 | 158 | 391 | 790 | 1029 | 978 | 904 | 944 | 831 | 683 | 461 | 387 | 781 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross | cross- on | cross- on | on | on | cross- on | on | glass | glass | on | glass | glass | cross- on | cross | glass | glass | off | glass | cross- on | cross- off |
High Tide / height (m) | 7:14PM 0.57 | 7:40AM 0.87 | 7:54PM 0.51 | 8:23AM 0.83 | 8:37PM 0.44 | 9:11AM 0.77 | 9:28PM 0.38 | 10:10AM 0.70 | 10:42PM 0.34 | 11:25AM 0.63 | 12:42AM 0.35 | 12:58PM 0.60 | 2:32AM 0.42 | ||||||||
Low Tide / height (m) | 1:27PM -0.00 | 12:56AM -0.03 | 2:12PM 0.02 | 1:30AM -0.00 | 3:02PM 0.07 | 2:06AM 0.04 | 4:01PM 0.13 | 2:46AM 0.10 | 5:23PM 0.18 | 3:39AM 0.18 | 7:15PM 0.20 | 5:20AM 0.26 | 8:37PM 0.18 | ||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
| Sunrise | 6:26 | - | - | 6:26 | - | - | 6:24 | - | - | 6:24 | - | - | 6:24 | - | - | 6:24 | - | - | 6:24 | - | - |
| Sunset | - | 6:34 | - | - | 6:34 | - | - | 6:32 | - | - | 6:32 | - | - | 6:32 | - | - | 6:32 | - | - | 6:32 | - |
 |  |  | |  |  | | |  | |  | | | | | | |  | | | | |
Rain (mm) | - | - | 7 | - | 1 | 10 | 13 | 3 | - | - | - | - | - | - | 1 | - | - | - | - | - | 11 |
| Temp. °C | 28 | 29 | 29 | 28 | 28 | 29 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 29 |
| Feels °C (?) | 32 | 32 | 33 | 31 | 30 | 31 | 27 | 31 | 32 | 32 | 30 | 31 | 32 | 31 | 32 | 32 | 33 | 31 | 32 | 33 | 32 |
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Asu surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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