Surf Forecasts:
Wailua/Horners surf forecast from 13 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 5AM (local time) - 10ft (3.0m), 9s period, E swell with 1,672 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 3.0m 9s and forecast to arrive on Sunday (Aug 16) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 10s period and expected on Sunday (Aug 16) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 16th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Wailua/Horners over the next 16 days.
The Lowdown
Alright, crew. Rusty here with the lowdown on Wailua/Horners for the next couple of weeks. I'm not gonna sugarcoat it – this 16-day stretch is a tough one. Every single check-in shows "poor surf conditions," which is a real drag because there's some decent energy moving through at times.
We start on Thursday, August 13th, with a weak 5ft swell out of the east riding a short, gutless 7-second period. The wind is blowing straight onshore from the ENE at 12 mph, trashing any chance of a clean wave. The combined swell energy is a weak 210. That onshore wind keeps blowing into Friday the 14th, as the swell pushes up to 7ft from the east, with the energy climbing to a moderate 492. Still blown out.
The biggest surf hits Saturday the 15th and Sunday the 16th, with the swell maxing out at 8ft from the east, periods hitting 9 to 10 seconds, and energy surging as high as 1398 on Saturday afternoon. But it comes with a fresh onshore breeze at 19 mph, rain showers, and a risk of thunderstorms. For the average surfer, 8ft is getting into expert territory, and with that wind, it's an absolute mess. A setup like this, with strong onshore wind and a beach break, would be way more interesting for a kite surfer than a paddle surfer.
Into the second week, it settles down. From Monday the 17th through the end of the month, we're looking at swell heights between 3ft and 6ft, all from the east or ENE, with short periods of 7 to 8 seconds. The wind stays stubbornly onshore from the ENE or E, blowing 9 to 16 mph. There's a brief moment on Friday the 21st where the wind goes cross-onshore, but it's still "gentle cross-onshore and fairly choppy." By Friday, August 28th, we see a little bump to 6ft with moderate energy of 393, but the onshore wind is back.
There's no golden window here. No day where the wind and swell get their act together. The water temp is about average for this time of year. This is a long, frustrating outlook. Leave the sticks in the rack and check back later.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Sat night. Warm (max 27°C on Thu morning, min 25°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Sun morning. Warm (max 26°C on Sun morning, min 24°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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 7 | ENE 7 | E 7 | E 8 | E 8 | E 8 | E 9 | E 10 | E 10 | E 9 | E 9 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | ENE 7 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 181 | 175 | 295 | 435 | 476 | 650 | 1146 | 1671 | 1634 | 1637 | 1436 | 1014 | 582 | 408 | 303 | 236 | 208 | 152 | 139 | 104 | 84 |
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 | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 3:55PM0.78m | 3:57AM0.51m | 4:21PM0.72m | 4:45AM0.53m | 4:42PM0.65m | 5:35AM0.55m | 4:58PM0.58m | 6:31AM0.55m | 5:06PM0.52m | 7:41AM0.55m | 4:49PM0.47m | 9:21AM0.56m | |||||||||
Low Tide | 8:59AM0.07m | 10:30PM0.18m | 9:42AM0.14m | 10:54PM0.17m | 10:24AM0.21m | 11:18PM0.15m | 11:07AM0.30m | 11:42PM0.15m | 11:57AM0.37m | 00:07AM0.16m | 1:11PM0.44m | 00:38AM0.17m | 1:22AM0.18m | ||||||||
 |  |  | | |  |  | | | | |  |  | | | | |  | | | | |
 | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — |
 | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — |
mm | — | — | — | — | — | 1 | 2 | 2 | 5 | 3 | 3 | 6 | 4 | 4 | 3 | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 24 | 25 | 24 | 24 | 24 | 25 | 25 | 26 | 26 | 26 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 13 | S 13 | S 13 | S 14 | SE 12 | SSE 9 | SSE 8 | SSE 7 | S 14 | S 13 | S 13 | S 13 | ENE 7 | E 8 | NE 7 |
| kJ | 728 | 582 | 524 | 422 | 333 | 324 | 225 | 171 | 167 | 140 | 116 | 299 | 78 | 46 | 188 | 165 | 168 | 79 | 139 | 104 | 82 |
Swell 2 Height (m) Direction Period (s) | NNW 8 | NNW 7 | W 12 | NNW 8 | NNW 8 | NNW 8 | WNW 13 | NNW 8 | S 18 | S 17 | S 13 | S 13 | S 14 | S 12 | SSE 6 | WNW 13 | WNW 12 | SSE 10 | S 12 | NE 7 | E 8 |
| kJ | 6 | 5 | 11 | 6 | 12 | 12 | 34 | 12 | 98 | 145 | 116 | 121 | 202 | 102 | 22 | 57 | 29 | 35 | 44 | 62 | 84 |
Swell 3 Height (m) Direction Period (s) | W 12 | SE 9 | NNW 7 | W 12 | W 11 | W 11 | NNW 8 | WNW 13 | WNW 12 | WNW 12 | S 16 | S 16 | S 10 | S 15 | WNW 11 | SSE 6 | E 9 | WNW 12 | SSE 7 | S 12 | SSE 9 |
| kJ | 25 | 13 | 5 | 11 | 22 | 21 | 6 | 34 | 50 | 28 | 127 | 125 | 30 | 104 | 23 | 7 | 15 | 48 | 17 | 44 | 32 |
Wind waves Height (m) Direction Period (s) | E 7 | ENE 7 | E 7 | E 8 | E 8 | E 8 | E 9 | E 10 | E 10 | E 9 | E 9 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | — | — | — |
| kJ | 181 | 175 | 295 | 435 | 476 | 650 | 1146 | 1671 | 1634 | 1637 | 1436 | 1014 | 582 | 408 | 303 | 236 | 208 | 152 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 24 | 35 | 24 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 145 | 129 | 129 | 24 | 41 | 36 | 24 | 35 | 35 |
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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