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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 Saturday 18 Apr 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
24.8° C
(Which is normal for this time of year)How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 12PM is: 1.3m 6s primary swell from a East direction (forecast issued at 07:00am April 18). An open ocean swell of 0.5m 12s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 4.5ft (1.3m) | 6s |
| Afternoon (18 Apr) | 4ft (1.2m) | 6s |
| Evening (18 Apr) | 3.5ft (1.1m) | 6s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tue 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) (?) | 12 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 12 | 13 | 13 | 6 | 13 | 7 | 4 | 5 | 12 | 12 | 12 | 12 | 12 | 7 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 82 | 92 | 128 | 105 | 76 | 88 | 81 | 68 | 70 | 51 | 87 | 90 | 42 | 92 | 76 | 22 | 29 | 75 | 75 | 75 | 75 | 76 | 34 | 44 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | glass |
High Tide / height (m) | 3:35AM 0.26 | 5:05PM 0.64 | 4:08AM 0.20 | 5:57PM 0.64 | 4:41AM 0.16 | 6:55PM 0.62 | ||||||||||||||||||
Low Tide / height (m) | 9:38AM -0.12 | 11:58PM 0.10 | 10:13AM -0.12 | 1:14AM 0.11 | 10:52AM -0.09 | |||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| Sunrise | - | 6:15 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:59 | - | - | - |
 |  | |  |  |  | | | | | |  | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | 1 | - | - | - | - | - | - | - | - | 2 | 1 | - | - | - | - | 1 | - | - | 1 | 1 |
| Temp. °C | 23 | 23 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 24 | 24 | 23 | 23 | 23 | 23 | 25 | 24 | 25 | 24 | 24 | 23 |
| Feels °C (?) | 24 | 24 | 26 | 27 | 27 | 26 | 26 | 24 | 24 | 24 | 25 | 26 | 25 | 26 | 23 | 24 | 25 | 25 | 27 | 26 | 26 | 26 | 27 | 26 |
- Map Icons:
Break
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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