- Forecast
- Maps
- Live
- Weather State
- Spot Information
Ammonias Surf Forecast
/ HAW – Kaua'i (25 breaks) / Hawaii (267 breaks) /
Ammonias surfForecast / HAW – Kaua'i / USA
12 Day Weather and Surf, issued 7 pm Thursday 10 Jul 2025 HST
Best Forecast Surf Conditions for Ammonias this week:
The surf forecast for Ammonias over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 11) at 5AM. The primary swell is predicted to be 1.8m and 7s period with a secondary swell of 0.6m and 9s. Another secondary swell of 0.5m and 12s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Ammonias in the next 12 days are 1.9m 7s and forecast to arrive on Thursday (Jul 17) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 11th Jul) | 6ft (1.8m) 7s |
| Best Surf | 5AM (Fri 11th Jul) | 6ft (1.8m) 7s |
| Most Powerful | 2AM (Thu 17th Jul) | 6ft (1.9m) 7s |
Table - best surf conditions forecast for Ammonias over the next 12 days.
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tue 22 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 7 | 8 | 7 | 8 | 8 | 8 | 7 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 552 | 463 | 474 | 476 | 382 | 383 | 348 | 367 | 421 | 465 | 413 | 488 | 333 | 338 | 377 | 409 | 473 | 486 | 496 | 440 | 414 | 395 | 364 | 480 | 501 | 532 | 465 | 492 | 445 | 530 | 468 | 401 | 355 | 468 | 474 | 502 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross- on | cross | cross | cross | cross | cross | cross | cross | cross- on | cross- on | cross | cross- on | cross | cross |
High Tide / height (m) | 3:25AM 0.20 | 4:52PM 0.69 | 4:11AM 0.21 | 5:25PM 0.68 | 5:06AM 0.23 | 5:57PM 0.65 | 6:11AM 0.25 | 6:28PM 0.59 | 7:29AM 0.29 | 6:58PM 0.52 | 8:57AM 0.35 | 7:26PM 0.44 | 10:23AM 0.43 | 7:50PM 0.35 | 11:35AM 0.52 | 12:33PM 0.61 | 1:24PM 0.67 | 11:43PM 0.18 | 2:10PM 0.72 | 1:05AM 0.18 | 2:53PM 0.74 | |||||||||||||||
Low Tide / height (m) | 11:35PM 0.13 | 9:09AM -0.05 | 12:03AM 0.12 | 9:49AM -0.03 | 12:33AM 0.10 | 10:31AM 0.01 | 1:04AM 0.08 | 11:18AM 0.07 | 1:36AM 0.06 | 12:16PM 0.15 | 2:09AM 0.04 | 1:35PM 0.23 | 2:44AM 0.01 | 3:37PM 0.29 | 3:24AM -0.01 | 4:10AM -0.03 | 5:02AM -0.04 | 9:45PM 0.17 | 5:56AM -0.05 | 10:04PM 0.15 | 6:51AM -0.07 | |||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tue 22 | |||||||||||||||||||||||||
| Sunrise | - | 6:01 | - | - | 6:01 | - | - | 6:01 | - | - | 6:01 | - | - | 6:01 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:05 | - | - | 6:05 | - |
| Sunset | - | - | 7:23 | - | - | 7:23 | - | - | 7:23 | - | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:21 |
 |  |  |  | |  |  | | | | | | | | | |  | |  | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | 2 | - | 1 | 1 | 1 | 6 | 2 | 1 | 1 | - | - | 1 | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 1 | - | 3 | 1 | - | - | - | - |
| Temp. °C | 25 | 25 | 26 | 24 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 26 | 26 | 25 | 27 | 27 | 25 | 26 | 26 | 24 | 26 | 26 | 25 | 25 | 26 |
| Feels °C (?) | 24 | 24 | 25 | 24 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 26 | 25 | 24 | 24 | 25 | 24 | 25 | 24 | 25 | 24 | 25 | 26 | 26 | 25 | 25 | 24 | 22 | 24 | 24 | 23 | 23 | 24 |
Short Range Forecast: Moderate rain (total 14mm), heaviest on Sat night. Warm (max 26°C on Fri afternoon, min 23°C on Fri night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Sun night. Warm (max 26°C on Mon morning, min 23°C on Sun night). Wind will be generally light. | Days 6-9 Weather Summary Mostly dry. Warm (max 27°C on Thu afternoon, min 24°C on Wed night). Wind will be generally light. | Long Range Forecast: Light rain (total 7mm), mostly falling on Sat night. Warm (max 26°C on Sun morning, min 24°C on Sat night). Mainly fresh winds. | |||||||||||||||||||||||||||||||||
- 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.
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 12 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
Nearest