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Surf Forecasts:
Asu surfForecast / Nias / Indonesia
48hr Weather and Surf, issued 12 am Thursday 21 May 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
30.3° C
(Which is slightly warmer than usual)How big are the waves at Asu today?
The current surf forecast for Asu at 3AM is: 1.2m 15s primary swell from a Southwest direction and 0.9m 12s secondary swell from a South direction, 0.7m 5s secondary swell from a West-northwest direction (forecast issued at 12:00am May 21). The wind direction is predicted to be onshore.
| Time (WIB) & Date | Wave Height | Wave 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 ForecastHeavy rain (total 28mm), heaviest during Thu morning. Warm (max 29°C on Wed night, min 27°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | |
640 | 631 | 631 | 535 | 614 | 614 | 614 | 744 | 773 | 753 | 686 | 598 | 520 | 676 | 685 | 685 | 714 | 753 | 763 | 630 | 548 | 548 | 564 | 581 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | |
High Tide | 9:08AM0.79m | 9:40PM0.41m | 10:03AM0.72m | 10:53PM0.41m | 11:05AM0.65m | |||||||||||||||||||
Low Tide | 2:01AM0.06m | 4:04PM0.10m | 2:52AM0.13m | 5:08PM0.14m | 3:57AM0.21m | 6:17PM0.17m | ||||||||||||||||||
 | |  | | | | | |  |  |  | | |  | | | | | | |  | |  | | |
 | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — |
3 | 2 | 3 | 4 | 2 | 1 | 3 | 3 | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 1 | — | — | — | — | |
Temp °C | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 28 | 29 | 29 | 29 | 28 |
29 | 29 | 31 | 31 | 30 | 28 | 28 | 28 | 28 | 30 | 31 | 31 | 31 | 30 | 32 | 31 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 30 | |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
 kJ | 640 | 631 | 631 | 535 | 614 | 614 | 614 | 744 | 773 | 753 | 686 | 598 | 520 | 676 | 685 | 685 | 714 | 753 | 763 | 630 | 548 | 548 | 564 | 581 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | WNW 6 | W 7 | W 7 | W 7 | W 7 | W 7 | S 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 217 | 214 | 157 | 146 | 144 | 144 | 144 | 56 | 70 | 72 | 77 | 81 | 68 | 61 | 99 | 83 | 83 | 83 | 83 | 87 | 90 | 90 | 112 | 115 |
Swell 3 Height (m) Direction Period (s) | SW 10 | W 16 | WNW 5 | WNW 5 | W 15 | W 15 | W 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | W 16 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 |
| kJ | 4 | 5 | 29 | 29 | 4 | 4 | 2 | 108 | 87 | 89 | 65 | 65 | 64 | 5 | 41 | 41 | 40 | 39 | 38 | 23 | 23 | 23 | 22 | 22 |
Wind waves Height (m) Direction Period (s) | WNW 5 | WNW 5 | — | — | WNW 5 | WNW 6 | WNW 6 | — | — | — | — | — | — | WNW 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | 17 | 28 | — | — | 29 | 44 | 55 | — | — | — | — | — | — | 94 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 64 | 64 | 15 | 15 | 15 | 64 | 76 | 372 | 64 | 15 | 15 | 15 | 15 | 64 | 15 | 15 | 15 | 15 | 15 | 15 | 64 | 64 | 64 | 15 |
Best forecast wave conditions in Nias | ||||||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||||||
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