Surf Forecasts:
Kealia surf forecast from 23 Aug 2026:
- Most powerful swell: Tuesday 25 Aug, 2PM (local time) - 6ft (1.8m), 8s period, E swell with 398 kJ wave energy.
Best Forecast Surf Conditions for Kealia this week:
The most powerful waves expected at Kealia in the next 16 days are 1.8m 8s and forecast to arrive on Tuesday (Aug 25) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 11s period and expected on Sunday (Aug 23) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Tue 25th Aug) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Kealia over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s comin’ down the pipe for Kealia over the next couple of weeks. I gotta be straight with ya – it’s a tough run. There are big gaps where you’ll be better off waxin’ a kiteboard or stayin’ home.
The whole first week is a write-off. The combined wave energy stays pretty weak, mostly between 135 and 437 (moderate wave energy), with onshore winds jammin’ it up from the east and east-northeast. You’re lookin’ at poor surf conditions from Sunday the 23rd of August all the way through Monday the 1st of September. The swell is small and sloppy, plus the wind’s on it. Not worth paddlin’ out.
Then from the 1st of September, things get a little interesting – but only just. Tuesday the 1st of September, the swell bumps up to 6.9 ft from the east-northeast with combined energy hitting 815 (strong to very strong wave energy). That’s a big lump of water. The period’s 10 seconds, so it’s got a bit of push. But the morning’s the only chance because the wind goes cross-on by the afternoon. That morning window is clean with a gentle breeze, so if you’re advanced and hungry, paddle out. The rest of that week into the 5th of September is a mess of onshore chop and moderate cross-onshore winds.
Here’s a standout, but it’s way out there. Sunday the 6th of September is the best window in the whole run. You’ve got 5.9 ft from the east-northeast, combined energy at 465 (moderate wave energy), and the wind goes light cross-offshore from the southwest. That’ll be clean. It’s still a beach and reef setup, so that long period (7-8 seconds) isn’t a problem. The crowd at Kealia (Kauai) is often there, so expect company, but the conditions will be the best on offer. The water temp feels about average for the time of year.
For the beginners, anything over 5 ft is spicy, and we’ve got plenty of that. This is mostly a setup for the advanced crew.
Bottom line: you’ve got a big gap of nothing, one morning on the 1st of September, and then a really clean Sunday the 6th of September. That’s your day.
Short Range ForecastLight rain (total 5mm), mostly falling on Sun night. Warm (max 27°C on Sun afternoon, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri morning. Warm (max 26°C on Wed afternoon, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 6 | E 6 | E 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 349 | 378 | 315 | 255 | 282 | 295 | 246 | 354 | 388 | 283 | 230 | 199 | 153 | 128 | 124 | 120 | 119 | 163 | 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 | on | on | on | on | on | on | on | on | on |
High Tide | 11:08PM0.31m | 1:24PM0.70m | 00:18AM0.34m | 1:52PM0.73m | 1:02AM0.38m | 2:17PM0.75m | 1:41AM0.42m | 2:41PM0.75m | 2:19AM0.46m | 3:03PM0.74m | 2:57AM0.51m | 3:25PM0.71m | 3:36AM0.55m | ||||||
Low Tide | 9:06PM0.30m | 5:23AM0.15m | 8:47PM0.29m | 6:14AM0.12m | 8:51PM0.27m | 6:56AM0.10m | 9:02PM0.25m | 7:34AM0.09m | 9:16PM0.23m | 8:10AM0.10m | 9:33PM0.20m | 8:46AM0.13m | 9:51PM0.17m | ||||||
 |  | |  |  | | | | |  |  | | | | | |  | |  | |
 | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 7:01 | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — |
mm | — | — | — | 1 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | 2 | 1 | 2 |
Temp °C | 26 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 28 | 27 | 27 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 24 | 25 | 24 | 25 | 26 | 25 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 10 | WNW 10 | NW 11 | ESE 9 | SE 10 | SE 8 | SSE 8 | NW 10 | SSW 18 | S 14 | E 7 | S 19 | E 7 | S 17 | S 16 | S 15 | S 14 | S 14 |
| kJ | 200 | 92 | 65 | 121 | 47 | 47 | 31 | 22 | 25 | 109 | 106 | 199 | 458 | 128 | 470 | 387 | 275 | 257 | 246 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 14 | SSE 13 | ESE 9 | NW 10 | WNW 10 | SSE 12 | SSW 16 | SSW 16 | NW 10 | S 18 | S 18 | SSW 13 | S 17 | NNE 8 | NNE 7 | NNE 7 | E 14 | E 14 |
| kJ | 107 | 93 | 68 | 66 | 49 | 36 | 45 | 85 | 83 | 24 | 105 | 224 | 57 | 470 | 21 | 18 | 16 | 103 | 129 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | NW 12 | SSE 13 | SSE 12 | SSW 13 | NW 9 | NW 9 | SSE 13 | SSW 13 | NW 10 | SSW 13 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NNE 7 | NW 9 |
| kJ | 49 | 47 | 39 | 58 | 52 | 60 | 22 | 22 | 33 | 55 | 23 | 56 | 47 | 31 | 30 | 30 | 22 | 15 | 13 |
Wind waves Height (m) Direction Period (s) | E 7 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 7 | — | E 7 | — | E 7 | E 7 | E 6 | E 6 | E 7 |
| kJ | 349 | 378 | 315 | 255 | 282 | 295 | 246 | 354 | 388 | 283 | 230 | — | 153 | — | 124 | 120 | 119 | 163 | 270 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 30 | 40 | 41 | 40 | 40 | 30 | 30 | 40 | 30 | 30 | 41 | 30 | 24 | 30 | 30 | 24 | 40 | 30 | 45 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Kealia Surf forecast
The above surf forecast table for Kealia provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kealia can be found by selecting the local surf guide option on the grey menu. Our Kealia 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 (Kealia) 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 Kealia 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 Kealia, camping, hotels and condos and appartments in Kaua'i, consider staying in Lihue - Kauai which is 14 km (9 miles) away. Alternatively, find information about places to stay and car hire in Nawiliwili which is 15 km (9 miles) away
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