Surf Forecasts:
Asu surf forecast from 21 Oct 2026:
- Best quality surf: Friday 23 Oct, 4PM (local time) - 7.5ft (2.3m), 19s period, SSW swell with cross-offshore winds.
- Most powerful swell: Friday 23 Oct, 4PM (local time) - 7.5ft (2.3m), 19s period, SSW swell with 3,541 kJ wave energy.
- Next surfable swell (1★+): Wednesday 21 Oct, 7PM (local time) - 4.5ft (1.4m), 13s period with SSW swell.
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 Wednesday (Oct 21) at 7PM. The primary swell is predicted to be 1.4m and 13s period with a secondary swell of 0.5m and 20s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Asu in the next 16 days are 2.3m 19s and forecast to arrive on Friday (Oct 23) at 4PM. 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 (Wed 21st Oct) | 4.5ft (1.4m) 13s |
| Best Surf | 4PM (Fri 23rd Oct) | 7.5ft (2.3m) 19s |
| Most Powerful | 4PM (Fri 23rd Oct) | 7.5ft (2.3m) 19s |
Table - best surf conditions forecast for Asu over the next 16 days.
Short Range ForecastHeavy rain (total 28mm), heaviest during Thu night. Warm (max 28°C on Wed morning, min 27°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 72mm), heaviest during Sun night. Warm (max 27°C on Sat morning, min 24°C on Sun night). Winds increasing (calm on Sat morning, strong winds from the WNW by Sun night). | ||||||||||||||||||||
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 18 | SSW 18 | SSW 16 | SSW 19 | SSW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 12 | S 11 | S 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 805 | 700 | 526 | 651 | 644 | 798 | 2605 | 3541 | 2564 | 2219 | 1706 | 1728 | 1310 | 883 | 1061 | 801 | 514 | 547 | 418 | 363 | 357 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | glassy | cross-off | cross-off | glassy | cross-off | cross-off | glassy | glassy | cross-off | cross-on | cross-on | on | cross-on | glassy | cross-off | off | glassy | cross-on |
High Tide | 3:30PM0.45m | 3:04AM0.57m | 3:59PM0.54m | 3:46AM0.60m | 4:27PM0.63m | 4:24AM0.63m | 4:56PM0.71m | 5:00AM0.63m | 5:26PM0.79m | 5:35AM0.62m | 5:59PM0.84m | 6:12AM0.60m | 6:35PM0.87m | ||||||||
Low Tide | 8:48PM0.28m | 9:42AM0.16m | 9:43PM0.23m | 10:06AM0.11m | 10:26PM0.17m | 10:32AM0.07m | 11:05PM0.10m | 10:59AM0.03m | 11:44PM0.05m | 11:27AM0.00m | 00:23AM0.01m | 11:58AM-0.02m | 1:04AM0.00m | ||||||||
 |  |  | | |  |  | | | | | | |  | |  |  |  | | |  | |
 | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — |
mm | 1 | — | 3 | — | — | 12 | — | — | 12 | 1 | 2 | 14 | 5 | 2 | 38 | 10 | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 27 |
Feels °C | 31 | 31 | 32 | 32 | 31 | 32 | 32 | 31 | 32 | 31 | 31 | 31 | 29 | 26 | 27 | 24 | 28 | 28 | 29 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 16 | SSW 19 | SSW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 12 | S 11 | S 11 |
| kJ | 805 | 700 | 526 | 400 | 406 | 798 | 2605 | 3541 | 2564 | 2219 | 1706 | 1728 | 1310 | 883 | 1061 | 801 | 514 | 547 | 418 | 363 | 357 |
Swell 2 Height (m) Direction Period (s) | SSW 22 | SSW 21 | SSW 19 | SSW 18 | SSW 18 | SSW 12 | SSW 12 | W 7 | S 8 | S 8 | S 8 | S 8 | S 8 | SW 15 | S 7 | W 11 | W 7 | WNW 9 | W 8 | SW 13 | W 8 |
| kJ | 181 | 178 | 480 | 651 | 644 | 298 | 228 | 1 | 84 | 63 | 63 | 76 | 93 | 489 | 67 | 2 | 107 | 43 | 50 | 106 | 32 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 8 | W 8 | W 8 | W 8 | SSW 21 | W 8 | — | SW 15 | W 11 | W 11 | W 10 | W 9 | S 8 | W 9 | W 15 | S 9 | W 5 | SW 13 | W 8 | SW 12 |
| kJ | 2 | 6 | 5 | 5 | 5 | 637 | 1 | — | 75 | 2 | 2 | 8 | 7 | 71 | 6 | 4 | 39 | 15 | 63 | 34 | 55 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 7 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 212 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 15 | 15 | 76 | 0 | 0 | 0 | 0 | 15 |
Best forecast wave conditions in Nias | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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