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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 1 am Saturday 21 Mar 2026 HSTForecast update in hr min s Forecast update imminent
Ammonias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ammonias sea temperature is
24.6° C
(Which is slightly warmer than usual)How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 6AM is: 0.6m 12s primary swell from a South direction and 0.9m 6s secondary swell from a South-southeast direction (forecast issued at 01:00am March 21). An open ocean swell of 1.6m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 2ft (0.6m) | 12s |
| Afternoon (21 Mar) | 2.5ft (0.7m) | 18s |
| Evening (21 Mar) | 2.5ft (0.8m) | 18s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 109 | 109 | 107 | 105 | 280 | 276 | 399 | 316 | 348 | 261 | 243 | 232 | 229 | 226 | 223 | 223 | 284 | 284 | 215 | 201 | 188 | 140 | 138 | 138 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | cross- off | cross- off | glass | glass | glass | glass | off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross |
High Tide / height (m) | 4:36AM 0.31 | 6:09PM 0.54 | 4:59AM 0.25 | 7:10PM 0.54 | 5:11AM 0.19 | |||||||||||||||||||
Low Tide / height (m) | 11:29PM 0.09 | 10:53AM -0.09 | 12:38AM 0.14 | 11:26AM -0.08 | 2:16AM 0.17 | 12:04PM -0.06 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:37 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:47 | - | - | - | - | - | - | - | 6:49 | - | - | - | - | - | - | - | 6:49 | - |
 | | |  | |  |  | |  | | | | | | |  | | | |  | | | |  | |
Rain (mm) | - | - | - | 1 | 1 | - | - | - | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 22 | 22 | 21 | 22 | 23 | 23 | 23 | 22 |
| Feels °C (?) | 24 | 24 | 24 | 26 | 27 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 23 | 23 | 22 | 21 | 20 | 20 | 21 | 21 | 21 | 20 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ammonias surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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