- 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 Tuesday 12 May 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 9AM is: 1.5m 6s primary swell from a East-northeast direction and 0.6m 8s secondary swell from a Southeast direction, 0.5m 16s secondary swell from a South direction (forecast issued at 01:00am May 12). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 5ft (1.5m) | 6s |
| Afternoon (12 May) | 5ft (1.6m) | 6s |
| Evening (12 May) | 5.5ft (1.7m) | 6s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 13mm), heaviest on Tue morning. Warm (max 24°C on Tue afternoon, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | ||||||||||||||||||||||
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 | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSW 17 | SSW 17 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | E 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | |
99 | 92 | 176 | 187 | 216 | 216 | 235 | 233 | 261 | 262 | 303 | 274 | 247 | 255 | 276 | 299 | 311 | 295 | 310 | 276 | 238 | 197 | 197 | 208 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | |
High Tide | 11:47PM0.39m | 1:23PM0.42m | 00:26AM0.35m | 2:02PM0.52m | 1:06AM0.30m | 2:42PM0.60m | ||||||||||||||||||
Low Tide | 6:26AM-0.02m | 7:03PM0.15m | 6:51AM-0.06m | 8:12PM0.13m | 7:19AM-0.10m | 9:17PM0.11m | ||||||||||||||||||
 | |  | | |  |  | | | | | | | | | | |  | | | | | |  | |
 | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — |
1 | 1 | 2 | 1 | 1 | — | — | — | — | 1 | — | — | — | — | — | 1 | 1 | — | 1 | 1 | — | — | 1 | 1 | |
Temp °C | 23 | 22 | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 23 | 24 | 24 | 24 | 24 | 23 |
22 | 21 | 22 | 22 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 22 | 23 | 23 | 23 | 24 | 23 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | SE 8 | S 16 | S 16 | SE 9 | SE 9 | SE 9 | SSE 15 | SSE 15 | S 14 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 9 | NNW 15 | NW 14 | NW 14 | NNW 13 |
 kJ | 26 | 49 | 53 | 50 | 186 | 124 | 50 | 47 | 47 | 72 | 71 | 103 | 29 | 64 | 95 | 65 | 41 | 43 | 44 | 52 | 142 | 162 | 151 | 120 |
Swell 2 Height (m) Direction Period (s) | SSW 17 | SSW 17 | S 16 | S 16 | N 10 | SE 9 | NNW 10 | S 16 | SSE 15 | SE 9 | SSW 14 | SE 8 | SSW 15 | SSW 14 | SSW 14 | N 8 | SSW 14 | NW 15 | NW 15 | NW 15 | SE 9 | SE 10 | SE 10 | SE 8 |
| kJ | 99 | 92 | 134 | 127 | 50 | 38 | 37 | 76 | 74 | 20 | 40 | 25 | 84 | 82 | 37 | 21 | 80 | 59 | 109 | 107 | 53 | 74 | 74 | 32 |
Swell 3 Height (m) Direction Period (s) | S 12 | NNW 12 | N 11 | NNW 10 | SE 8 | NNW 10 | SSE 16 | NW 10 | SSW 14 | SSW 14 | SSW 15 | NW 9 | S 14 | N 9 | N 8 | SSW 14 | N 8 | N 8 | N 8 | N 8 | N 8 | NNE 8 | NNE 8 | NNE 8 |
| kJ | 26 | 47 | 61 | 34 | 25 | 38 | 85 | 24 | 41 | 41 | 23 | 13 | 65 | 14 | 12 | 37 | 21 | 22 | 21 | 21 | 21 | 23 | 22 | 22 |
Wind waves Height (m) Direction Period (s) | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | E 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 209 | 170 | 176 | 187 | 216 | 216 | 235 | 233 | 261 | 262 | 303 | 274 | 247 | 255 | 276 | 299 | 311 | 295 | 310 | 276 | 238 | 197 | 197 | 208 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 31 | 31 | 16 | 16 | 16 | 16 | 33 | 33 | 31 | 31 | 31 | 31 | 16 | 16 | 16 | 16 | 16 | 31 | 16 | 16 | 16 |
Best forecast wave conditions in Kaua'i | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- 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