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Surf Forecasts:
Ammonias surfForecast / HAW – Kaua'i / USA
48hr Weather and Surf, issued 1 am Tuesday 09 Dec 2025 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
25.6° C
(Which is normal for this time of year)How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 5AM is: 0.6m 8s primary swell from a East-northeast direction and 0.6m 5s secondary swell from a East-northeast direction (forecast issued at 01:00am December 09). An open ocean swell of 0.6m 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 (09 Dec) | 3ft (0.9m) | 8s |
| Afternoon (09 Dec) | 2.5ft (0.8m) | 8s |
| Evening (09 Dec) | 2.5ft (0.7m) | 8s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 09 | Wednesday 10 | Thursday 11 | ||||||||||||||||||||||
| 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) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 16 | 16 | 8 | 16 | 15 | 15 | 15 | 8 | 15 | 14 | 14 | 13 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 147 | 45 | 45 | 96 | 77 | 77 | 77 | 60 | 58 | 44 | 44 | 86 | 86 | 51 | 84 | 76 | 121 | 71 | 30 | 121 | 118 | 110 | 102 | 30 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- on | cross- on | cross- on | glass | glass | glass | cross- off | off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off |
High Tide / height (m) | 7:30AM 0.63 | 8:07PM 0.20 | 8:17AM 0.56 | 9:57PM 0.26 | 9:02AM 0.49 | |||||||||||||||||||
Low Tide / height (m) | 11:31PM 0.05 | 3:17PM 0.12 | 12:27AM 0.12 | 3:57PM 0.10 | 1:42AM 0.20 | 4:30PM 0.08 | ||||||||||||||||||
Tuesday 09 | Wednesday 10 | Thursday 11 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:03 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:53 | - | - | - | - | - | - | - | 5:53 | - | - | - | - | - | - | - | 5:54 | - |
 |  | |  | |  | | |  | | | | | | | | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - |
| Temp. °C | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 24 | 25 | 24 | 23 | 23 | 23 | 22 | 22 | 24 | 24 | 23 | 22 |
| Feels °C (?) | 23 | 24 | 24 | 24 | 25 | 25 | 26 | 27 | 26 | 26 | 23 | 23 | 25 | 24 | 24 | 23 | 24 | 24 | 22 | 22 | 24 | 25 | 23 | 22 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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