Surf Forecasts:
Asu surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 2 Sep, 1PM (local time) - 6ft (1.9m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 7AM (local time) - 6ft (1.9m), 16s period, SSW swell with 1,752 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 1PM (local time) - 6ft (1.9m), 16s period with SW 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 (Sep 02) at 1PM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 0.7m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Asu in the next 16 days are 1.9m 16s and forecast to arrive on Wednesday (Sep 09) at 7AM. 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+) | 1PM (Wed 2nd Sep) | 6ft (1.9m) 16s |
| Best Surf | 1PM (Wed 2nd Sep) | 6ft (1.9m) 16s |
| Most Powerful | 7AM (Wed 9th Sep) | 6ft (1.9m) 16s |
Table - best surf conditions forecast for Asu over the next 16 days.
Short Range ForecastHeavy rain (total 23mm), heaviest during Wed night. Warm (max 29°C on Wed afternoon, min 27°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 34mm), heaviest during Mon night. Warm (max 28°C on Sat morning, min 27°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 20 | SSW 18 | SSW 18 | SSW 16 |
Wave Graph | |||||||||||||||||||||
1852 | 1571 | 1317 | 966 | 928 | 834 | 599 | 572 | 451 | 409 | 409 | 1180 | 848 | 724 | 870 | 596 | 456 | 317 | 681 | 948 | 1209 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | glassy | cross-on | cross | cross | glassy | cross-on | glassy | off | cross-off | off | off | cross-off | off | cross-off | glassy | glassy | glassy | cross | cross-off |
High Tide | 9:14PM0.71m | 9:06AM0.51m | 10:02PM0.67m | 9:46AM0.42m | 11:08PM0.63m | 10:50AM0.33m | 00:45AM0.61m | 1:27PM0.30m | 2:30AM0.64m | 3:29PM0.35m | 3:43AM0.70m | 4:27PM0.44m | |||||||||
Low Tide | 2:33PM0.03m | 3:26AM0.16m | 3:04PM0.06m | 4:26AM0.21m | 3:40PM0.10m | 6:10AM0.26m | 4:33PM0.16m | 9:05AM0.23m | 6:23PM0.21m | 10:13AM0.17m | 8:40PM0.20m | 10:52AM0.11m | 9:57PM0.15m | ||||||||
6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
— | 6:34 | — | — | 6:34 | — | — | 6:34 | — | — | 6:32 | — | — | 6:32 | — | — | 6:31 | — | — | 6:31 | — | |
mm | 2 | — | 7 | 1 | — | 8 | 2 | — | 3 | — | 1 | 4 | — | 1 | 11 | 4 | 1 | 12 | — | — | 5 |
Temp °C | 28 | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 32 | 33 | 31 | 33 | 33 | 32 | 32 | 31 | 32 | 30 | 29 | 30 | 31 | 30 | 30 | 33 | 32 | 32 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | S 9 | S 9 | SSW 18 | SSW 18 | SSW 16 |
1852 | 1571 | 1317 | 966 | 928 | 834 | 599 | 572 | 451 | 341 | 317 | 1180 | 848 | 724 | 870 | 596 | 207 | 168 | 681 | 948 | 1209 | |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SSW 17 | SSW 17 | WNW 7 | S 9 | WNW 8 | S 9 | S 9 | SSW 15 | SSW 13 | S 9 | SSW 12 | S 9 |
66 | 66 | 48 | 63 | 63 | 45 | 61 | 45 | 42 | 409 | 409 | 10 | 122 | 11 | 181 | 185 | 456 | 317 | 168 | 160 | 127 | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | W 7 | S 8 | SSE 8 | W 9 | WNW 8 | SSW 20 | WNW 8 | SW 21 | SW 21 | SSW 20 | SSW 13 | WNW 7 | SSW 12 |
11 | 11 | 12 | 11 | 11 | 12 | 11 | 18 | 24 | 29 | 21 | 7 | 12 | 75 | 13 | 72 | 112 | 256 | 246 | 5 | 113 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | S 9 | — | — | — | — | — | S 9 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 189 | — | — | — | — | — | 160 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 15 | 64 | 51 | 0 | 51 | 0 | 0 | 51 | 0 | 0 | 126 | 0 | 0 | 0 | 0 | 0 | 76 | 0 |
Best forecast wave conditions in Nias | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 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.











