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Kalapaki Beach Surf Forecast
/ HAW – Kaua'i (25 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Kalapaki Beach surfForecast / HAW – Kaua'i / USA
12 Day Weather and Surf, issued 7 am Thursday 18 Sep 2025 HST
Best Forecast Surf Conditions for Kalapaki Beach this week:
The most powerful waves expected at Kalapaki Beach in the next 12 days are 0.9m 16s and forecast to arrive on Saturday (Sep 20) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 7s period and expected on Saturday (Sep 20) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Sat 20th Sep) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for Kalapaki Beach over the next 12 days.
Short Range Forecast Light rain (total 9mm), mostly falling on Thu night. Warm (max 27°C on Thu afternoon, min 25°C on Thu morning). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 18mm), heaviest on Tue morning. Warm (max 27°C on Sun afternoon, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 6 | 7 | 6 | 6 | 18 | 17 | 16 | 15 | 15 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 6 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 215 | 230 | 188 | 142 | 176 | 300 | 452 | 419 | 376 | 430 | 392 | 360 | 339 | 368 | 284 | 224 | 274 | 222 | 188 | 120 | 122 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide / height (m) | 2:04PM 0.63 | 2:13AM 0.37 | 2:35PM 0.61 | 2:50AM 0.42 | 3:02PM 0.57 | 3:25AM 0.46 | 3:25PM 0.52 | 4:00AM 0.50 | 3:47PM 0.47 | 4:35AM 0.54 | 4:06PM 0.41 | 5:12AM 0.55 | 4:22PM 0.35 | ||||||||
Low Tide / height (m) | 8:49PM 0.12 | 7:43AM 0.08 | 9:04PM 0.11 | 8:26AM 0.09 | 9:20PM 0.09 | 9:09AM 0.11 | 9:37PM 0.07 | 9:52AM 0.14 | 9:54PM 0.06 | 10:37AM 0.17 | 10:13PM 0.05 | 11:27AM 0.20 | 10:33PM 0.06 | ||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| Sunrise | 6:24 | - | - | 6:24 | - | - | 6:24 | - | - | 6:24 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - |
| Sunset | - | 6:37 | - | - | 6:36 | - | - | 6:35 | - | - | 6:34 | - | - | 6:32 | - | - | 6:31 | - | - | 6:30 | - |
 | |  |  | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | 3 | 1 | 1 | 4 | - | - | - | - | 2 | 4 | - | 2 | 3 | 3 | 2 | 2 | 1 | 1 | 6 |
| Temp. °C | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 25 |
| Feels °C (?) | 25 | 27 | 26 | 26 | 27 | 26 | 25 | 27 | 24 | 26 | 27 | 25 | 26 | 27 | 26 | 25 | 25 | 24 | 26 | 26 | 25 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for HAW - Kaua'i
Cross-shore wind has turned cross-on at Kalapaki Beach (fresh winds from the ENE at BUOY-NWWH1 1 km from Kalapaki Beach). 1.3m 6s windswell from the E with a 0.8m 8s swell from the SE and a 0.3m 13s groundswell from the SSW. 3 swells combining to make bigger set waves.
1 h 3 min ago
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 Kalapaki Beach 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 Kalapaki Beach Surf forecast
The above surf forecast table for Kalapaki Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kalapaki Beach can be found by selecting the local surf guide option on the grey menu. Our Kalapaki Beach 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 (Kalapaki Beach) 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 Kalapaki Beach 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 Kalapaki Beach, camping, hotels and condos and appartments in Kaua'i, consider staying in Nawiliwili which is 1 km (1 miles) away. Alternatively, find information about places to stay and car hire in Lihue - Kauai which is 3 km (2 miles) away
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