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Ammonias Surf Forecast
/ HAW – Kaua'i (25 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Ammonias surfForecast / HAW – Kaua'i / USA
48hr Weather and Surf, issued 7 pm Tuesday 16 Sep 2025 HST
How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 10PM is: 1.5m 6s primary swell from a East direction and 0.5m 9s secondary swell from a Southeast direction, 0.3m 13s secondary swell from a South-southwest direction (forecast issued at 07:00pm September 16). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Sep) | - | - |
| Afternoon (16 Sep) | 4ft (1.2m) | 6s |
| Evening (16 Sep) | 4.5ft (1.4m) | 6s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 9 | 9 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 94 | 132 | 165 | 228 | 184 | 165 | 165 | 151 | 145 | 150 | 112 | 120 | 150 | 184 | 171 | 135 | 230 | 198 | 219 | 195 | 167 | 169 | 146 | 127 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- on | cross | cross | cross | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide / height (m) | 12:50AM 0.26 | 1:28PM 0.65 | 1:34AM 0.31 | 2:04PM 0.63 | 2:13AM 0.37 | |||||||||||||||||||
Low Tide / height (m) | 8:19PM 0.15 | 5:56AM 0.09 | 8:34PM 0.13 | 6:54AM 0.08 | 8:49PM 0.12 | 7:43AM 0.08 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:24 | - | - |
| Sunset | 6:38 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - |
 |  |  | | |  | |  | | | | |  | | | | | | | | | | | | |
Rain (mm) | - | - | 1 | 1 | - | - | - | 1 | - | - | 1 | - | - | - | - | - | - | 1 | - | - | 1 | - | - | - |
| Temp. °C | 27 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 27 | 26 | 25 | 26 | 25 | 25 | 25 | 27 | 27 |
| Feels °C (?) | 25 | 25 | 24 | 23 | 24 | 24 | 26 | 25 | 25 | 26 | 25 | 25 | 24 | 24 | 24 | 26 | 25 | 24 | 26 | 25 | 26 | 25 | 27 | 27 |
- Map Icons:
Break
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 HAW - Kaua'i
Still cross-shore at Ammonias (moderate winds from the ENE at BUOY-NWWH1 0 km from Ammonias). 1.4m 5s windswell from the ENE with a 0.5m 9s swell from the SE. 2 swells combining to make bigger set waves.
1 h 15 min ago
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