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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 am Wednesday 18 Feb 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
24.4° C
(Which is normal for this time of year)How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 1PM is: 3.0m 9s primary swell from a East direction and 0.2m 12s secondary swell from a South-southwest direction (forecast issued at 07:00am February 18). An open ocean swell of 0.2m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Feb) | 10ft (3.0m) | 9s |
| Afternoon (18 Feb) | 10ft (3.0m) | 9s |
| Evening (18 Feb) | 10ft (3.0m) | 9s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 18 | Thursday 19 | Friday 20 | Sat 21 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1575 | 1541 | 1759 | 1601 | 1655 | 1374 | 1455 | 1487 | 1645 | 1422 | 1288 | 1097 | 1037 | 980 | 1119 | 1314 | 993 | 984 | 909 | 838 | 770 | 695 | 745 | 729 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | glass | cross | glass |
High Tide / height (m) | 4:24AM 0.56 | 4:41PM 0.34 | 4:49AM 0.51 | 5:30PM 0.38 | 5:13AM 0.45 | 6:25PM 0.41 | ||||||||||||||||||
Low Tide / height (m) | 10:56AM 0.01 | 10:18PM 0.02 | 11:20AM -0.01 | 11:08PM 0.07 | 11:47AM -0.03 | 12:07AM 0.14 | ||||||||||||||||||
Wednesday 18 | Thursday 19 | Friday 20 | Sat 21 | |||||||||||||||||||||
| Sunrise | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:36 | - | - | - | - | - | - | - | 6:36 | - | - | - | - | - | - | - | 6:37 | - | - | - |
 |  | | | |  | | | |  | | |  |  | | | | |  |  | | | | | |
Rain (mm) | 1 | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 5 | 1 | 1 |
| Temp. °C | 22 | 22 | 22 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 23 | 20 | 18 | 19 | 21 |
| Feels °C (?) | 18 | 17 | 17 | 20 | 17 | 17 | 18 | 18 | 18 | 18 | 19 | 20 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 23 | 21 | 19 | 20 | 22 |
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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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