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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 Wednesday 29 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
24.6° C
(Which is normal for this time of year)How big are the waves at Ammonias today?
The current surf forecast for Ammonias at 2PM is: 1.4m 7s primary swell from a East-northeast direction and 0.3m 13s secondary swell from a South-southwest direction (forecast issued at 07:00am April 29). An open ocean swell of 0.3m 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 (29 Apr) | 4.5ft (1.4m) | 7s |
| Afternoon (29 Apr) | 4.5ft (1.4m) | 7s |
| Evening (29 Apr) | 4.5ft (1.4m) | 6s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 9mm), mostly falling on Wed night. Warm (max 24°C on Wed afternoon, min 22°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 1 | Sat 2 | |||||||||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | |
186 | 181 | 176 | 171 | 166 | 145 | 140 | 132 | 146 | 188 | 240 | 273 | 244 | 237 | 257 | 276 | 360 | 415 | 411 | 400 | 397 | 397 | 450 | 462 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | |
High Tide | 3:05PM0.52m | 2:19AM0.28m | 3:37PM0.56m | 2:46AM0.24m | 4:09PM0.59m | |||||||||||||||||||
Low Tide | 7:57AM-0.05m | 9:24PM0.12m | 8:17AM-0.07m | 10:13PM0.11m | 8:39AM-0.07m | 11:00PM0.11m | ||||||||||||||||||
 |  | | | |  | | | |  |  | | | | | | | | | |  | | | | |
 | 6:07 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | 6:05 |
 | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:02 | — | — | 7:02 |
1 | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | 1 | 1 | — | — | — | 1 | 1 | 1 | 1 | |
Temp °C | 22 | 22 | 23 | 24 | 23 | 23 | 23 | 22 | 22 | 23 | 23 | 24 | 24 | 23 | 23 | 22 | 22 | 23 | 24 | 24 | 23 | 23 | 22 | 22 |
21 | 20 | 21 | 22 | 20 | 21 | 22 | 21 | 20 | 21 | 20 | 21 | 22 | 21 | 22 | 20 | 20 | 21 | 22 | 22 | 21 | 21 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | SW 12 | NW 12 | NNW 14 | NNW 14 | NW 14 | NW 13 | NNW 13 | NW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 13 | NNW 13 | NNW 13 | NNW 13 | NNW 12 | NNW 12 | S 15 | NNW 12 | S 16 | S 16 | S 16 | S 16 |
 kJ | 37 | 22 | 40 | 39 | 46 | 44 | 64 | 75 | 99 | 98 | 96 | 104 | 96 | 98 | 96 | 92 | 85 | 82 | 110 | 79 | 177 | 186 | 129 | 127 |
Swell 2 Height (m) Direction Period (s) | NW 12 | SW 12 | SW 12 | SSW 13 | SSE 11 | SE 8 | SE 9 | SE 8 | SSW 12 | SSW 12 | SSW 12 | S 16 | S 16 | S 16 | S 16 | SSW 16 | S 15 | S 15 | NNW 12 | S 16 | NNW 12 | NNW 12 | NW 16 | NW 15 |
| kJ | 22 | 22 | 22 | 34 | 22 | 11 | 12 | 18 | 28 | 28 | 28 | 82 | 127 | 81 | 82 | 82 | 112 | 110 | 81 | 139 | 53 | 52 | 129 | 79 |
Swell 3 Height (m) Direction Period (s) | SSE 11 | SSE 11 | NW 12 | SSE 11 | SSW 13 | SSE 10 | SSE 10 | SSE 10 | SE 8 | SSE 10 | N 8 | NNW 7 | N 7 | SE 8 | SE 8 | N 7 | SSW 11 | SSW 11 | SE 8 | S 15 | NNW 19 | NW 16 | NNW 12 | NNW 12 |
| kJ | 12 | 12 | 21 | 11 | 34 | 10 | 10 | 10 | 11 | 10 | 10 | 11 | 17 | 23 | 15 | 9 | 12 | 24 | 18 | 67 | 34 | 91 | 59 | 57 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 186 | 181 | 176 | 171 | 166 | 145 | 140 | 132 | 146 | 188 | 240 | 273 | 244 | 237 | 257 | 276 | 360 | 415 | 411 | 400 | 397 | 397 | 450 | 462 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 31 | 45 | 45 | 31 | 31 | 31 | 45 | 31 | 38 | 33 | 31 | 31 | 31 | 16 | 16 | 16 | 16 | 38 | 33 | 33 | 31 | 16 | 16 | 16 |
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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