
Surf Forecasts:
Ammonias surf forecast from 24 Jul 2026:
- Most powerful swell: Wednesday 29 Jul, 2PM (local time) - 11ft (3.5m), 11s period, ENE swell with 2,974 kJ wave energy.
Best Forecast Surf Conditions for Ammonias this week:
The most powerful waves expected at Ammonias in the next 16 days are 3.5m 11s and forecast to arrive on Wednesday (Jul 29) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 8s period and expected on Saturday (Jul 25) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Wed 29th Jul) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Ammonias over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for Ammonias.
We’re looking at a pretty challenging stretch ahead. The surf is going to be a mixed bag, and honestly, for the next week and a half, you’ll be scratching your head more than getting your feet wet. The first solid action doesn't show up until late in the piece, so patience is the name of the game.
The first real chance of the entire period kicks off on Tuesday, July 28th in the afternoon. We’ve got a 7ft swell coming from the ENE, and the wind finally swings to a cross-offshore from the NNE, so the face should be clean. That’s a big positive. The wave energy is solid (1596) and the period is a moderate 13 seconds, giving it some shape. But it’s not a perfect setup, and the morning before that is still messy.
Then, Wednesday, July 29th, is the standout window. The afternoon sees a proper pulse of swell, 10ft from the ENE, and the wind is cross-offshore from the north. The wave energy is pumping (2424), but that size is getting into the "experts only" zone. The period is a shorter 10 seconds, so it’ll be a bit lumpy, but for the experienced crew, this is the best you’re going to get.
After that, it trails off. The morning of Thursday, July 30th, is a write-off with onshore chop, and the rest of the first week of August is plagued by cross-shore winds and messy, short-period swell. The energy stays weak to moderate (between 622 and 946), with periods dropping to 7 to 8 seconds. It’s just not worth paddling out for.
The next possible flicker is on the morning of Wednesday, August 5th. We get a 7ft ENE swell with a 12-second period, which is a nice combo. The wave energy is moderate (1207) and the wind is cross-shore. It’s not clean, but it’s the best looking option in the second week. The period is decent, so the waves will have some push, but the cross-shore wind will keep it a bit lumpy. It’s a *maybe* for the keen.
The water temperature is about average for this time of year, so no surprises there.
So, bottom line: Wednesday, July 29th afternoon is the heavyweight champion of this forecast. Get out there if you’ve got the chops. After that, Wednesday, August 5th morning is your only other real look. The rest of the time, it’s a flat and choppy mess.
Rusty out.
Short Range ForecastModerate rain (total 10mm), heaviest on Thu night. Warm (max 26°C on Sun afternoon, min 24°C on Thu night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Mon morning. Warm (max 26°C on Tue morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | SSW 18 | ENE 7 | SSW 17 | S 20 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | E 14 | E 13 | E 13 | E 13 | ENE 13 | ENE 12 | ENE 11 | ENE 10 | ENE 9 |
Wave Graph | |||||||||||||||||||
469 | 557 | 440 | 408 | 627 | 731 | 790 | 575 | 452 | 416 | 373 | 347 | 401 | 633 | 1398 | 1776 | 2475 | 2126 | 858 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross | cross-off | on |
High Tide | 1:36PM0.61m | 00:21AM0.18m | 2:14PM0.63m | 1:16AM0.20m | 2:48PM0.65m | 1:57AM0.21m | 3:20PM0.66m | 2:33AM0.23m | 3:50PM0.67m | 3:10AM0.25m | 4:18PM0.66m | 3:49AM0.27m | |||||||
Low Tide | 5:07AM0.04m | 10:06PM0.17m | 6:00AM0.03m | 10:10PM0.16m | 6:48AM0.01m | 10:20PM0.16m | 7:31AM-0.01m | 10:33PM0.16m | 8:11AM-0.02m | 10:50PM0.15m | 8:48AM-0.01m | 11:10PM0.13m | |||||||
— | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
7:21 | — | 7:21 | — | — | 7:20 | — | — | 7:20 | — | — | 7:19 | — | — | 7:19 | — | — | 7:17 | — | |
mm | 2 | 2 | 1 | 2 | 2 | 1 | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 1 | 10 |
Temp °C | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 26 | 24 | 24 | 25 | 24 | 26 | 26 | 25 | 25 | 25 | 26 |
Feels °C | 24 | 23 | 23 | 22 | 24 | 23 | 22 | 23 | 24 | 23 | 24 | 24 | 23 | 26 | 26 | 25 | 25 | 25 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | S 12 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | E 14 | E 13 | E 13 | E 13 | SSW 13 | SSW 14 | S 14 | ENE 10 | S 14 |
469 | 190 | 428 | 302 | 627 | 731 | 790 | 575 | 452 | 416 | 373 | 347 | 401 | 633 | 141 | 154 | 268 | 2126 | 232 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 18 | S 12 | S 20 | SSW 16 | S 11 | E 13 | E 15 | E 15 | E 14 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 16 | S 16 | SW 21 | S 14 | SW 19 |
123 | 356 | 138 | 408 | 196 | 63 | 53 | 107 | 210 | 329 | 292 | 284 | 213 | 189 | 46 | 46 | 17 | 261 | 58 | |
Swell 3 Height (m) Direction Period (s) | S 11 | S 22 | S 21 | S 12 | S 12 | E 14 | E 16 | E 12 | S 11 | SSE 11 | SE 11 | SE 11 | SE 11 | SE 9 | SE 8 | SSE 10 | SW 15 | SSW 19 | S 14 |
56 | 86 | 326 | 100 | 95 | 33 | 45 | 47 | 20 | 12 | 18 | 18 | 18 | 19 | 11 | 19 | 8 | 37 | 4 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | NE 7 | ENE 13 | ENE 12 | ENE 11 | — | ENE 9 |
350 | 557 | 440 | 400 | 483 | 519 | 522 | 430 | 362 | 334 | 272 | 237 | 236 | 127 | 1398 | 1776 | 2475 | — | 858 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 46 | 33 | 33 | 16 | 31 | 31 | 16 | 31 | 31 | 16 | 16 | 31 | 16 | 16 | 31 | 14 | 15 | 12 | 126 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Ammonias Surf forecast
The above surf forecast table for Ammonias provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ammonias can be found by selecting the local surf guide option on the grey menu. Our Ammonias surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ammonias) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Ammonias may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a vacation in Kaua'i? If you are looking for accommodation near Ammonias, camping, hotels and condos and appartments in Kaua'i, consider staying in Nawiliwili which is 2 km (1 miles) away. Alternatively, find information about places to stay and car hire in Lihue - Kauai which is 3 km (2 miles) away










