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Surf Forecasts:
Asu surfForecast / Nias / Indonesia
48hr Weather and Surf, issued 6 pm Wednesday 20 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 9PM is: 1.2m 15s primary swell from a Southwest direction and 0.7m 12s secondary swell from a South direction, 0.6m 7s secondary swell from a West-northwest direction (forecast issued at 06:00pm May 20). The wind direction is predicted to be onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | - | - |
| Afternoon (20 May) | 3.5ft (1.1m) | 16s |
| Evening (20 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 25mm), heaviest during Wed night. Warm (max 29°C on Wed afternoon, min 27°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 16 | SW 15 | SW 15 | 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 | |
603 | 674 | 657 | 640 | 631 | 631 | 535 | 614 | 614 | 614 | 666 | 773 | 753 | 614 | 528 | 520 | 676 | 685 | 685 | 714 | 763 | 763 | 581 | 548 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | on | cross-on | on | on | on | on | cross-on | on | on | on | on | on | |
High Tide | 8:41PM0.43m | 9:08AM0.79m | 9:40PM0.41m | 10:03AM0.72m | 10:53PM0.41m | 11:05AM0.65m | ||||||||||||||||||
Low Tide | 3:06PM0.06m | 2:01AM0.06m | 4:04PM0.10m | 2:52AM0.13m | 5:08PM0.14m | 3:57AM0.21m | ||||||||||||||||||
 |  |  | | |  | | | | | | | |  |  | | | | | | | | | | |
 | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — |
 | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | 6:31 |
— | — | 3 | 2 | 3 | 4 | 4 | 1 | 1 | 2 | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | 1 | |
Temp °C | 29 | 29 | 29 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 |
30 | 31 | 31 | 31 | 31 | 31 | 30 | 29 | 28 | 27 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 29 | 30 | 30 | 30 | 29 | |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | 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 |
 kJ | 603 | 674 | 657 | 640 | 631 | 631 | 535 | 614 | 614 | 614 | 666 | 773 | 753 | 614 | 528 | 520 | 676 | 685 | 685 | 714 | 763 | 763 | 581 | 548 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | WNW 7 | W 7 | W 7 | W 7 | W 7 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 139 | 136 | 136 | 217 | 214 | 199 | 146 | 144 | 144 | 144 | 108 | 75 | 74 | 79 | 83 | 70 | 96 | 101 | 104 | 107 | 107 | 109 | 115 | 118 |
Swell 3 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | SW 10 | WNW 5 | WNW 5 | SW 17 | W 15 | W 15 | W 11 | W 18 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 8 | S 9 | S 9 | S 8 |
| kJ | 79 | 78 | 56 | 4 | 18 | 21 | 232 | 4 | 4 | 2 | 6 | 87 | 89 | 65 | 65 | 65 | 61 | 41 | 41 | 40 | 35 | 38 | 23 | 23 |
Wind waves Height (m) Direction Period (s) | WNW 7 | WNW 7 | WNW 7 | WNW 7 | — | — | — | WNW 6 | WNW 6 | WNW 6 | WNW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 27 | 27 | 36 | 36 | — | — | — | 31 | 47 | 64 | 58 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 15 | 64 | 64 | 64 | 15 | 64 | 15 | 15 | 15 | 64 | 64 | 64 | 64 | 64 | 64 | 15 | 15 | 15 | 64 | 64 | 15 | 64 | 64 | 15 |
Best forecast wave conditions in Nias | ||||||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||||||
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