Surf Forecasts:
Wailua/Horners surf forecast from 10 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 5PM (local time) - 15ft (4.5m), 12s period, E swell with 6,532 kJ wave energy.
Best Forecast Surf Conditions for Wailua/Horners this week:
The most powerful waves expected at Wailua/Horners in the next 16 days are 4.5m 12s and forecast to arrive on Sunday (Aug 16) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 9s period and expected on Monday (Aug 17) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Sun 16th Aug) | 15ft (4.5m) 12s |
Table - best surf conditions forecast for Wailua/Horners over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what’s coming down the pike. I’m gonna level with you: this forecast window is looking pretty grim for Wailua/Horners (Kauai). We’ve got a massive stretch of poor surf conditions that’s going to make you wonder if the ocean took a vacation. From the start of the period right through to nearly the end of the first week, it's blowing onshore with clean trade winds, or worse, and we’re stuck with weak, short-period, wind-driven mush.
The water’s sitting around a typical 80°F for this time of year, which is nothing to write home about.
Now, here’s where things get a little spicy, but not in a good way. By Saturday, August 15th, we’re looking at a big jump in size, with a swell from the east pushing 8 to 10 feet. The combined energy of all the swells is moderate to strong (1389 then 1791). Sounds promising, right? Wrong. The wind cranks up from the north-northeast at 19 mph, blowing cross-onshore and making it lumpy. This setup is more interesting for kite surfing than paddle surfing.
The real beast shows up on Sunday, August 16th. A massive SSE swell is forecast, pushing 11 to 15 feet, with a combined energy reading that’s through the roof (2908 then 6557). But again, the conditions are a joke. Gale-force winds and cross-shore chop will make it a complete washing machine. This is for experts only, and even they’d be hard-pressed to find a wave.
Monday, August 17th settles down a bit, with an 8 to 7-foot east-northeast swell and lighter cross-shore winds. The energy is still high (1097), but the forecast is marginal, calling it questionable.
After that, we’re right back into the poor surf zone. From Tuesday, August 18th, all the way to the end of the outlook on August 25th, it’s a monotonous repeat of weak, onshore, short-period junk. The waves are between 3.5 and 5 feet, with energy readings in the low 100s to 300s—just nothing to get excited about.
So, the bottom line? Don’t bother waxing up for the next couple of weeks. This blank run is a classic example of a region on pause. Enjoy the break, because the ocean’s taking one.
Short Range ForecastLight rain (total 3mm), mostly falling on Mon morning. Warm (max 27°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 27mm), heaviest during Sat night. Warm (max 27°C on Thu afternoon, min 25°C on Thu night). Winds increasing (moderate winds from the NE on Thu morning, near gales from the N by Sat night). | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
AM | PM | 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) | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | E 6 | E 7 | ENE 7 | E 7 | ENE 8 | ENE 8 | E 8 | E 10 | E 11 | E 12 | E 11 | E 12 | E 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 186 | 213 | 149 | 181 | 152 | 172 | 158 | 154 | 158 | 193 | 206 | 320 | 427 | 473 | 809 | 1343 | 1780 | 2839 | 2880 | 6532 | 5050 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 2:19PM0.85m | 1:29AM0.39m | 2:54PM0.85m | 2:21AM0.43m | 3:26PM0.83m | 3:09AM0.47m | 3:55PM0.78m | 3:57AM0.51m | 4:21PM0.72m | 4:45AM0.53m | 4:42PM0.65m | 5:35AM0.55m | 4:58PM0.58m | ||||||||
Low Tide | 9:19PM0.25m | 7:29AM0.01m | 9:42PM0.23m | 8:15AM0.03m | 10:06PM0.21m | 8:59AM0.07m | 10:30PM0.18m | 9:42AM0.14m | 10:54PM0.17m | 10:24AM0.21m | 11:18PM0.15m | 11:07AM0.30m | 11:42PM0.15m | ||||||||
 | |  |  | |  |  | |  | | | | | | | | |  |  | |  | |
 | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — |
 | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — |
mm | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 23 | 32 | 17 | 6 |
Temp °C | 26 | 26 | 25 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 27 | 27 | 27 | 28 | 28 | 26 | 27 | 26 | 25 | 25 | 27 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 27 | 23 | 27 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | S 15 | E 7 | S 14 | S 18 | S 18 | S 16 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 13 | S 13 | E 12 | S 12 | S 13 | S 13 |
| kJ | 186 | 213 | 149 | 110 | 152 | 181 | 416 | 620 | 755 | 728 | 582 | 524 | 422 | 333 | 324 | 225 | 171 | 2839 | 145 | 114 | 85 |
Swell 2 Height (m) Direction Period (s) | S 16 | S 15 | S 15 | SSE 9 | S 14 | S 20 | S 13 | S 13 | W 12 | NNW 8 | SE 9 | W 12 | W 12 | ESE 11 | NNW 9 | WNW 13 | S 16 | S 13 | S 17 | S 16 | S 16 |
| kJ | 129 | 113 | 168 | 32 | 148 | 268 | 168 | 163 | 25 | 6 | 13 | 11 | 11 | 90 | 15 | 33 | 46 | 162 | 147 | 127 | 127 |
Swell 3 Height (m) Direction Period (s) | NNW 9 | SSE 10 | NE 8 | NNW 8 | SSE 9 | SSE 9 | SE 9 | SE 9 | NNW 9 | W 12 | NNW 7 | SE 9 | NNW 7 | W 11 | W 11 | NNW 8 | NNW 8 | S 18 | WNW 12 | WNW 11 | WNW 11 |
| kJ | 26 | 37 | 28 | 11 | 32 | 30 | 20 | 19 | 8 | 11 | 5 | 14 | 5 | 22 | 21 | 13 | 11 | 98 | 28 | 25 | 24 |
Wind waves Height (m) Direction Period (s) | NE 7 | — | — | E 7 | — | E 7 | E 7 | E 7 | E 6 | E 7 | ENE 7 | E 7 | ENE 8 | ENE 8 | E 8 | E 10 | E 11 | — | E 11 | E 12 | E 10 |
| kJ | 36 | — | — | 181 | — | 172 | 158 | 154 | 158 | 193 | 206 | 320 | 427 | 473 | 809 | 1343 | 1780 | — | 2880 | 6532 | 5050 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 35 | 35 | 22 | 25 | 35 | 24 | 35 | 24 | 24 | 24 | 35 | 35 | 35 | 35 | 23 | 35 | 35 | 413 | 323 | 138 | 25 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Wailua/Horners Surf forecast
The above surf forecast table for Wailua/Horners provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Wailua/Horners can be found by selecting the local surf guide option on the grey menu. Our Wailua/Horners 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 (Wailua/Horners) 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 Wailua/Horners 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 Wailua/Horners, camping, hotels and condos and appartments in Kaua'i, consider staying in Lihue - Kauai which is 8 km (5 miles) away. Alternatively, find information about places to stay and car hire in Nawiliwili which is 9 km (6 miles) away
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