Surf Forecasts:
Wailua/Horners surf forecast from 18 Aug 2026:
- Best quality surf: Friday 21 Aug, 8AM (local time) - 3.5ft (1.1m), 7s period, ENE swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 8PM (local time) - 6.5ft (2.0m), 7s period, E swell with 439 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 8AM (local time) - 3.5ft (1.1m), 7s period with ENE 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 Friday (Aug 21) at 8AM. The primary swell is predicted to be 1.1m and 7s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Wailua/Horners in the next 16 days are 2.0m 7s and forecast to arrive on Monday (Aug 24) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 14s period and expected on Monday (Aug 17) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 21st Aug) | 3.5ft (1.1m) 7s |
| Best Surf | 8AM (Fri 21st Aug) | 3.5ft (1.1m) 7s |
| Most Powerful | 8PM (Mon 24th Aug) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Wailua/Horners over the next 16 days.
The Lowdown
Alright, it's Rusty here, and I've gotta be straight with you. The next two weeks at Wailua/Horners are looking like a tough stretch. This spot is an exposed reef break for advanced surfers only, and it's inconsistent, so it needs the right combo to come alive. For the vast majority of the 16-day window, that combo just isn't there.
The pattern is set in from Monday the 17th of August. We've got a constant onshore wind hammering the face, turning what swell there is into a messy wall. The combined energy is weak to moderate (367 on Monday afternoon), and the wind is just ruining it. The water temp is sitting at 80°, which is about normal for this time of year.
This poor stretch looks set to last for over a week. From Monday the 17th right through to Thursday the 27th of August, every session is flagged as poor. The swell sticks around, mostly chest to head high (about 6ft to 7ft), but the wind is relentless from the east or east-northeast at 9-16 mph. Periods are short, between 7 and 9 seconds, which means a fat, weak, onshore windswell. Not worth paddling out for.
The first real glimmer of something different shows up on Friday the 28th of August. The swell builds to a solid 8ft from the east with a 9-second period, and the combined energy jumps into the strong range (1080). The wind is still onshore at 12 mph, but the forecast calls it only "marginal" instead of poor. This wave size is definitely expert territory. The next day, Saturday the 29th, holds at 8ft but the energy drops a bit and the wind is still blowing onshore. Then on Sunday the 30th, with the swell at 8ft and a 10-second period, the energy is still strong (1035) and the forecast again calls it marginal. That Sunday afternoon might offer the closest thing to a session, but only for experienced surfers who don't mind the onshore wind.
Honestly, this reef is going to need a serious shift in wind direction and a better swell angle to offer any quality. For the next 16 days, the only two days that even sniff a chance are the 28th and 30th of August, and even then, conditions will be rough. The rest is a write-off.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Mon afternoon. Warm (max 26°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Warm (max 27°C on Sat afternoon, min 24°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 7 | E 7 | E 7 | E 6 | E 9 | E 8 | ENE 8 | E 8 | E 8 | ENE 7 | E 7 | E 7 | ENE 7 | ENE 7 | WNW 14 | WNW 12 | E 7 | E 7 | E 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 367 | 261 | 179 | 150 | 109 | 150 | 113 | 172 | 63 | 74 | 153 | 68 | 70 | 108 | 82 | 130 | 256 | 311 | 285 | 270 |
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 | cross-on | cross-on | cross-on | on | on | on | on | on | on | on |
High Tide | 5:06PM0.52m | 7:41AM0.55m | 4:49PM0.47m | 9:21AM0.56m | 11:08AM0.59m | 12:11PM0.63m | 12:52PM0.66m | 11:08PM0.31m | 1:24PM0.70m | 00:18AM0.34m | ||||||||||
Low Tide | 00:07AM0.16m | 1:11PM0.44m | 00:38AM0.17m | 1:22AM0.18m | 2:38AM0.19m | 4:13AM0.18m | 9:06PM0.30m | 5:23AM0.15m | 8:47PM0.29m | |||||||||||
 |  |  |  | | | |  | | | | | | | | |  | |  | | |
 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:01 | — |
mm | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 1 | — |
Temp °C | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 24 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 25 | 26 | 26 | 25 |
Feels °C | 27 | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 28 | 28 | 28 | 29 | 28 | 29 | 27 | 28 | 27 | 27 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | S 14 | S 13 | S 13 | S 13 | E 9 | E 8 | E 8 | NE 6 | E 8 | ENE 7 | E 7 | E 7 | ENE 7 | ENE 7 | WNW 11 | WNW 12 | WNW 11 | NW 11 | NW 10 |
| kJ | 29 | 188 | 165 | 168 | 80 | 150 | 113 | 108 | 49 | 74 | 153 | 68 | 70 | 108 | 82 | 130 | 256 | 151 | 117 | 87 |
Swell 2 Height (m) Direction Period (s) | S 12 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | NE 7 | NE 6 | NE 6 | E 8 | NE 7 | SE 9 | NE 7 | NE 7 | W 10 | W 10 | WNW 14 | S 14 | S 14 | ESE 11 | SSE 13 |
| kJ | 102 | 23 | 57 | 29 | 48 | 46 | 32 | 45 | 63 | 46 | 21 | 47 | 36 | 50 | 75 | 125 | 107 | 93 | 47 | 58 |
Swell 3 Height (m) Direction Period (s) | S 15 | SE 10 | E 9 | SW 18 | SE 8 | SSE 10 | SSE 9 | S 12 | SE 10 | SE 10 | S 12 | SE 9 | W 10 | SSE 14 | S 14 | SSE 15 | SE 8 | SSW 16 | SSW 15 | SSW 15 |
| kJ | 104 | 17 | 15 | 12 | 17 | 36 | 31 | 45 | 23 | 23 | 23 | 21 | 31 | 62 | 104 | 43 | 17 | 47 | 44 | 42 |
Wind waves Height (m) Direction Period (s) | E 8 | E 7 | E 7 | E 7 | E 6 | — | ENE 6 | ENE 8 | — | — | — | — | — | — | — | E 7 | E 7 | E 7 | E 7 | E 7 |
| kJ | 367 | 261 | 179 | 150 | 109 | — | 108 | 172 | — | — | — | — | — | — | — | 107 | 240 | 311 | 285 | 270 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 129 | 24 | 35 | 35 | 24 | 31 | 35 | 24 | 31 | 22 | 10 | 24 | 35 | 20 | 35 | 35 | 24 | 35 | 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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