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Surf Forecasts:
Ammonias surfForecast / HAW – Kaua'i / USA
48hr Weather and Surf, issued 7 pm Monday 15 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
25.5° C
(Which is slightly warmer than usual)How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 1AM is: 1.1m 5s primary swell from a South direction (forecast issued at 07:00pm December 15). An open ocean swell of 1.7m 14s is not directed at the surf break, a second open ocean swell of 0.6m 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 (16 Dec) | 3.5ft (1.1m) | 5s |
| Afternoon (16 Dec) | 3.5ft (1.1m) | 5s |
| Evening (16 Dec) | 4ft (1.2m) | 5s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 5 AM | 8 AM | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 393 | 47 | 48 | 60 | 62 | 62 | 37 | 55 | 48 | 77 | 88 | 83 | 69 | 85 | 88 | 75 | 88 | 75 | 108 | 68 | 77 | 69 | 50 | 47 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross |
High Tide / height (m) | 2:13AM 0.61 | 12:45PM 0.22 | 2:44AM 0.65 | 1:28PM 0.20 | 3:16AM 0.67 | |||||||||||||||||||
Low Tide / height (m) | 6:15PM 0.00 | 9:49AM 0.19 | 6:44PM -0.01 | 10:23AM 0.17 | 7:17PM -0.02 | 10:52AM 0.16 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - |
| Sunset | 5:55 | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - |
 |  | | | | | | |  |  | | | | | | |  | |  | | | | | | |
Rain (mm) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | 1 | 1 | - | 1 | - | - | - | - | 1 | 2 |
| Temp. °C | 24 | 24 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 24 | 23 | 23 | 23 | 22 | 23 | 24 | 24 |
| Feels °C (?) | 24 | 25 | 25 | 24 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 24 | 24 | 23 | 24 | 24 | 22 | 24 | 25 | 24 |
- 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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