Surf Forecasts:
Wailua/Horners surf forecast from 3 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 8AM (local time) - 5ft (1.6m), 9s period, NW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 5AM (local time) - 16ft (5.0m), 9s period, E swell with 3,828 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 8AM (local time) - 5ft (1.6m), 9s period with NW swell.
Best Forecast Surf Conditions for Wailua/Horners this week:
The surf forecast for Wailua/Horners over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 8AM. The primary swell is predicted to be 1.6m and 9s period with a secondary swell of 1.2m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Wailua/Horners in the next 16 days are 5.0m 9s and forecast to arrive on Tuesday (Sep 08) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 10.0m 14s period and expected on Tuesday (Sep 08) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 9th Sep) | 5ft (1.6m) 9s |
| Best Surf | 8AM (Wed 9th Sep) | 5ft (1.6m) 9s |
| Most Powerful | 5AM (Tue 8th Sep) | 16ft (5.0m) 9s |
Table - best surf conditions forecast for Wailua/Horners over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a long look ahead, and the story is pretty simple: most of it is a mess, but there might be a tiny window for one or two of you who are really keen.
The big picture is dominated by onshore winds from the ENE, blowing straight into Wailua/Horners (Kauai). For a spot that needs clean, offshore conditions, this is a recipe for frustration. The water temp is sitting at 81°, which is about average for this time of year, but you won’t be feeling that warmth through the chop.
The whole first week and into the second is a write-off. From Wednesday the 2nd right through to Monday the 14th, the wind is almost constantly onshore or cross-onshore. The swell is there, but it’s messy. There’s a decent long-period groundswell from the East that shows up around Saturday the 5th, with a period of 14 seconds and combined energy in the 2000s (2261), hitting 8 ft. That’s got some grunt, but with the wind blowing straight into it, it’s going to be a washing machine. That’s proper expert level size, but only for guys who don’t mind a beating.
The only real shift comes on Tuesday the 8th and into Wednesday the 9th. The wind swings around to the SSW and then S, giving clean cross-off conditions. On Tuesday morning the 8th, the swell is still a chunky 10 ft from the ENE, but it’s clean. That’s for experts only, and it still scores as marginal surf due to the messy swell direction. The best bet in this whole 16-day run is Wednesday morning, September 9th. We’ve got a clean S wind at 9 mph, cross-off, with a small 5 ft swell from the NW. The energy is weak-moderate (611), but the conditions will be glassy and clean. It’s a short-period swell (8 seconds), so the shape won’t be world-class, but it’s the only time the wind really plays ball. This break can be inconsistent, so you’ll need patience, and crowds are likely, but for clean, ridable waves, that’s your window.
After that, it’s back to onshore slop for the rest of the run, with swell dropping away to nothing by the 15th. Honestly, for the next 16 days, there’s only that one Wednesday morning that’s truly worth getting wet for.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Wed afternoon. Warm (max 26°C on Wed afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 100mm), heaviest during Mon night. Warm (max 26°C on Sat afternoon, min 23°C on Mon morning). Winds increasing (light winds from the SE on Sun night, severe gales from the SE by Mon night). | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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) | ENE 8 | E 8 | E 8 | ENE 8 | E 7 | E 7 | E 14 | E 14 | E 14 | E 14 | ENE 14 | E 13 | E 13 | E 12 | E 13 | E 13 | E 8 | ENE 10 | ENE 10 | WNW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 511 | 464 | 509 | 395 | 397 | 447 | 432 | 678 | 2155 | 2243 | 1980 | 1834 | 1697 | 1565 | 2305 | 2323 | 1977 | 2121 | 706 | 445 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | on | on | on | on | on | on | on | on | cross-on | on | on | cross-on | cross-off | cross-off | cross-off |
High Tide | 4:31PM0.46m | 8:46AM0.63m | 10:31AM0.66m | 11:43AM0.71m | 9:51PM0.30m | 12:34PM0.75m | 11:52PM0.34m | 1:13PM0.78m | 00:52AM0.40m | 1:48PM0.78m | 1:40AM0.47m | |||||||||
Low Tide | 00:11AM0.11m | 1:09AM0.13m | 2:42AM0.14m | 8:37PM0.30m | 8:03PM0.27m | 5:38AM0.11m | 8:13PM0.24m | 6:37AM0.09m | 8:30PM0.21m | |||||||||||
 |  |  |  | | |  |  | | | | | |  |  |  | |  | | | |
 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — |
 | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — |
mm | 4 | 1 | — | — | 1 | 1 | — | — | — | 1 | 4 | 2 | 2 | 13 | 15 | 6 | 49 | 8 | 2 | 1 |
Temp °C | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 23 | 24 | 26 | 26 | 26 | 26 |
Feels °C | 27 | 25 | 24 | 25 | 24 | 24 | 24 | 23 | 25 | 25 | 24 | 26 | 26 | 25 | 23 | 23 | 21 | 17 | 23 | 27 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | SE 13 | SE 12 | SSE 12 | SSE 12 | SSE 12 | E 14 | S 12 | S 12 | ENE 14 | S 12 | SSW 13 | S 12 | S 13 | SSW 14 | SSW 15 | ENE 10 | ENE 10 | WNW 9 |
| kJ | 325 | 275 | 257 | 341 | 534 | 412 | 361 | 678 | 472 | 538 | 1980 | 556 | 638 | 717 | 825 | 886 | 3328 | 2121 | 706 | 445 |
Swell 2 Height (m) Direction Period (s) | E 14 | E 13 | S 15 | E 13 | E 12 | E 14 | E 14 | SSE 11 | NNE 10 | N 9 | S 12 | SSE 10 | SE 10 | S 19 | NW 13 | SSE 10 | NNW 12 | NW 13 | W 9 | ENE 9 |
| kJ | 65 | 87 | 155 | 114 | 109 | 325 | 432 | 331 | 19 | 15 | 625 | 10 | 25 | 184 | 45 | 133 | 56 | 44 | 363 | 344 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SSE 11 | E 13 | S 14 | SSW 13 | SSW 13 | S 13 | NNE 11 | SSW 18 | N 12 | N 11 | S 20 | S 20 | NNW 15 | NNW 13 | NW 13 | NW 15 | — | E 14 | NW 11 |
| kJ | 33 | 40 | 123 | 144 | 60 | 59 | 14 | 12 | 31 | 3 | 9 | 30 | 67 | 21 | 18 | 43 | 8 | — | 144 | 147 |
Wind waves Height (m) Direction Period (s) | ENE 8 | E 8 | E 8 | ENE 8 | E 7 | E 7 | ENE 7 | ENE 7 | E 14 | E 14 | — | E 13 | E 13 | E 12 | E 13 | E 13 | E 8 | S 14 | S 10 | S 9 |
| kJ | 511 | 464 | 509 | 395 | 397 | 447 | 414 | 426 | 2155 | 2243 | — | 1834 | 1697 | 1565 | 2305 | 2323 | 1977 | 39615 | 2307 | 461 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 36 | 24 | 35 | 35 | 24 | 35 | 35 | 24 | 35 | 35 | 24 | 35 | 41 | 129 | 121 | 35 | 300 | 327 | 25 | 22 |
Best forecast wave conditions in Kaua'i | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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