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Surf Forecasts:
Asu surfForecast / Nias / Indonesia
48hr Weather and Surf, issued 12 pm Thursday 18 Sep 2025 WIB
How big are the waves at Asu today?
The current surf forecast for Asu at 4PM is: 1.5m 13s primary swell from a South-southwest direction and 0.4m 7s secondary swell from a West-northwest direction (forecast issued at 12:00pm September 18). The wind direction is predicted to be cross-onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 5ft (1.5m) | 14s |
| Afternoon (18 Sep) | 5ft (1.5m) | 14s |
| Evening (18 Sep) | 5ft (1.5m) | 13s |
Table - waves today at Asu. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 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 | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 13 | 16 | 15 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 934 | 801 | 778 | 767 | 673 | 673 | 778 | 735 | 862 | 476 | 484 | 492 | 608 | 999 | 860 | 1496 | 1514 | 1608 | 1221 | 1367 | 1305 | 1199 | 1321 | 1305 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- on | cross- on | glass | on | on | cross- on | cross- on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | glass | cross- on | cross | cross- on |
High Tide / height (m) | 4:28PM 0.44 | 4:30AM 0.69 | 5:04PM 0.53 | 5:08AM 0.72 | 5:34PM 0.61 | 5:41AM 0.73 | ||||||||||||||||||
Low Tide / height (m) | 10:01PM 0.17 | 11:17AM 0.09 | 10:49PM 0.13 | 11:39AM 0.07 | 11:27PM 0.10 | |||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 |
| Sunset | - | - | 6:28 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - |
 | | |  |  | | |  | |  | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 |
| Feels °C (?) | 31 | 31 | 31 | 31 | 32 | 31 | 30 | 31 | 30 | 30 | 30 | 31 | 32 | 30 | 31 | 30 | 30 | 30 | 29 | 31 | 32 | 30 | 31 | 30 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Nias
Still cross-shore at Asu (light winds from the NE at Medan/Polonia Airport 334 km from Asu). 1.4m 14s groundswell from the SSW with a 0.4m 7s swell from the W. 2 swells combining to make bigger set waves.
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