- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 Friday 17 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
24.4° C
(Which is normal for this time of year)How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 10AM is: 0.5m 12s primary swell from a South-southwest direction and 0.9m 4s secondary swell from a East-northeast direction (forecast issued at 01:00am April 17). An open ocean swell of 0.5m 14s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 1.5ft (0.5m) | 12s |
| Afternoon (17 Apr) | 2ft (0.6m) | 11s |
| Evening (17 Apr) | 4ft (1.2m) | 5s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 17 | Saturday 18 | Sunday 19 | ||||||||||||||||||||||
| 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 | 12 | 11 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 13 | 13 | 6 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 141 | 150 | 98 | 85 | 83 | 91 | 56 | 78 | 88 | 94 | 141 | 130 | 101 | 89 | 92 | 78 | 94 | 94 | 78 | 64 | 87 | 90 | 40 | 92 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- on | cross | cross- on | cross | cross- on | cross | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | glass | cross- on | glass | glass | glass | cross- on |
High Tide / height (m) | 3:03AM 0.31 | 4:19PM 0.61 | 3:35AM 0.26 | 5:05PM 0.64 | 4:08AM 0.20 | 5:57PM 0.64 | ||||||||||||||||||
Low Tide / height (m) | 9:53PM 0.07 | 9:07AM -0.11 | 10:53PM 0.08 | 9:38AM -0.12 | 11:58PM 0.10 | 10:13AM -0.12 | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:13 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:57 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - |
 |  | |  |  | | |  |  | | |  | | | | | |  | |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | 3 | 19 | 3 | 2 | 1 | 2 |
| Temp. °C | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 21 | 21 | 21 | 21 | 21 |
| Feels °C (?) | 24 | 24 | 24 | 23 | 24 | 24 | 24 | 25 | 23 | 23 | 24 | 23 | 27 | 26 | 27 | 26 | 25 | 25 | 27 | 21 | 24 | 24 | 23 | 24 |
- 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.
Nearest