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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 Sunday 17 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
24.7° 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: 1.4m 8s primary swell from a East-northeast direction and 0.9m 10s secondary swell from a Southeast direction, 0.8m 15s secondary swell from a South-southwest direction (forecast issued at 07:00am May 17). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 4.5ft (1.4m) | 8s |
| Afternoon (17 May) | 2.5ft (0.8m) | 15s |
| Evening (17 May) | 2.5ft (0.8m) | 15s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Sun night. Warm (max 25°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 8 | ENE 8 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | SSW 17 | SSW 15 | SSW 15 | SSW 16 | ENE 7 | |
298 | 264 | 264 | 270 | 249 | 249 | 242 | 344 | 408 | 394 | 394 | 394 | 427 | 384 | 353 | 302 | 253 | 280 | 240 | 433 | 305 | 252 | 273 | 328 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | |
High Tide | 3:09AM0.17m | 4:56PM0.72m | 3:55AM0.15m | 5:47PM0.71m | 4:48AM0.13m | 6:40PM0.67m | ||||||||||||||||||
Low Tide | 9:06AM-0.15m | 00:21AM0.09m | 9:49AM-0.13m | 1:27AM0.09m | 10:35AM-0.09m | |||||||||||||||||||
 |  | | | | | |  |  |  | | | | | | | | | | |  | | |  | |
 | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | 5:56 |
 | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:10 | — | — | 7:10 |
— | — | — | — | — | — | — | 1 | 2 | 1 | 1 | 1 | 1 | — | — | — | 1 | 1 | — | 1 | 1 | — | 1 | — | |
Temp °C | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 25 | 24 | 23 | 23 | 23 |
24 | 24 | 25 | 25 | 26 | 25 | 25 | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 25 | 23 | 23 | 22 | 22 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 10 | SE 10 | SE 9 | ENE 8 | ENE 8 | SSW 15 | ENE 8 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 15 | SSW 15 | SSW 16 | SSW 14 |
 kJ | 70 | 188 | 154 | 128 | 237 | 223 | 242 | 344 | 236 | 233 | 233 | 229 | 166 | 161 | 158 | 158 | 161 | 226 | 229 | 433 | 305 | 249 | 273 | 239 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SE 11 | SSE 8 | SSW 14 | SSE 8 | SSE 8 | SE 10 | SSW 19 | SE 10 | SE 10 | SE 10 | SSW 17 | S 17 | SSW 18 | SSW 18 | SE 9 | SE 7 | SE 8 | SSE 8 | SSE 7 |
| kJ | 147 | 138 | 249 | 249 | 249 | 163 | 37 | 239 | 39 | 39 | 102 | 251 | 49 | 48 | 48 | 92 | 149 | 207 | 176 | 23 | 13 | 31 | 22 | 20 |
Swell 3 Height (m) Direction Period (s) | SW 14 | S 16 | SSE 11 | SSE 11 | SE 8 | SSW 15 | SSE 10 | SSE 8 | SSE 10 | SSE 10 | SSW 19 | SE 10 | SSW 19 | SSE 7 | SE 7 | SSE 10 | SE 7 | SE 10 | SE 10 | SE 7 | SE 9 | SE 9 | NW 11 | NNW 12 |
| kJ | 100 | 132 | 48 | 48 | 65 | 249 | 72 | 37 | 40 | 40 | 251 | 49 | 212 | 21 | 13 | 38 | 23 | 24 | 23 | 13 | 22 | 22 | 30 | 55 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | ENE 8 | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 |
| kJ | 298 | 264 | 264 | 270 | — | — | 237 | — | 408 | 394 | 394 | 394 | 427 | 384 | 353 | 302 | 253 | 280 | 240 | 228 | 219 | 252 | 218 | 328 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 14 | 16 | 31 | 31 | 16 | 16 | 16 | 31 | 31 | 31 | 31 | 31 | 16 | 16 | 16 | 16 | 16 | 31 | 31 | 16 | 16 | 16 | 38 |
Best forecast wave conditions in Kaua'i | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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