Surf Forecasts:
Kailua Beach surf forecast from 5 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 8PM (local time) - 5ft (1.5m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 2AM (local time) - 7ft (2.2m), 14s period, ENE swell with 1,868 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 8PM (local time) - 5ft (1.5m), 10s period with ENE swell.
Best Forecast Surf Conditions for Kailua Beach this week:
The surf forecast for Kailua Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 08) at 8PM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 0.7m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kailua Beach in the next 16 days are 2.2m 14s and forecast to arrive on Saturday (Sep 05) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 8s period and expected on Tuesday (Sep 08) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 8th Sep) | 5ft (1.5m) 10s |
| Best Surf | 8PM (Tue 8th Sep) | 5ft (1.5m) 10s |
| Most Powerful | 2AM (Sat 5th Sep) | 7ft (2.2m) 14s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s lined up for Kailua Beach over the next couple of weeks.
Right off the bat, I gotta be straight with you – this is a tough stretch. We’re looking at a solid 16-day window, but the first week and a half is pretty much a write-off. The waves are there, but the wind is just constantly on it or cross-onshore, making a mess of things. You’ll see chest to head-high swell from the east-northeast and east, with combined wave energy in the moderate to strong range (910 to 1539), but it’s all blown out. The water temp is sitting right around 81°, which is pretty much spot-on average for the time of year, so at least you won’t need a thick suit.
From Friday the 4th through to Thursday the 11th, it’s all labelled as poor or marginal. The wind is mostly a fresh breeze from the east-northeast, onshore or cross-onshore, creating choppy, lumpy conditions. The swell periods are decent, between 12 and 14 seconds, suggesting some proper groundswell energy, but with the onshores, it’s just messy. Not worth paddling out unless you’ve got a kite.
Things don’t really improve through the second week either. From Sunday the 13th right through to Friday the 18th, we’ve got another barrage of east winds and risk of thunderstorms, keeping that same cross-onshore, lumpy vibe. Swell stays in the 5ft to 8ft range, but the period drops off to just 6-8 seconds – that’s short-period, wind-affected slop. Not gonna be a pretty sight.
Now, there might be a little light at the very end of the tunnel. On Saturday the 19th, we finally see a drop in the wind. A light breeze from the east, only about 6 mph, with a cross-onshore component. The swell is up around 7ft with a period of 8-9 seconds, and combined wave energy around 700. It’s still marginal, but the lighter wind means it’ll be less choppy. For a spot that’s been getting hammered, this is your best shot. It’s not a classic day, but for expert surfers, it might be worth a look.
Overall, apart from that last Saturday, this is a long, flat, blown-out run. Keep your expectations low, and hope the forecasts change.
Rusty
Short Range ForecastModerate rain (total 13mm), heaviest on Sun night. Warm (max 26°C on Fri afternoon, min 25°C on Fri afternoon). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Mon afternoon. Warm (max 28°C on Tue afternoon, min 25°C on Wed night). Winds decreasing (fresh winds from the ESE on Mon afternoon, light winds from the SSE by Tue night). | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | E 12 | E 13 | ENE 13 | ENE 12 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 577 | 1868 | 1519 | 1496 | 1568 | 1100 | 960 | 1175 | 851 | 1497 | 1247 | 921 | 625 | 282 | 256 | 201 | 297 | 265 | 289 | 265 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 11:33AM0.78m | 12:19PM0.83m | 11:14PM0.40m | 12:55PM0.86m | 00:19AM0.47m | 1:27PM0.87m | 1:08AM0.54m | 1:55PM0.86m | 1:52AM0.61m | 2:20PM0.82m | 2:33AM0.67m | |||||||||
Low Tide | 2:15AM0.17m | 4:01AM0.16m | 7:47PM0.35m | 5:17AM0.13m | 7:50PM0.31m | 6:14AM0.11m | 8:04PM0.27m | 7:02AM0.11m | 8:22PM0.23m | 7:46AM0.14m | 8:42PM0.19m | |||||||||
 |  | | | |  |  |  |  | | | | | |  | | | | |  | |
 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — |
mm | — | 1 | — | — | 1 | — | — | 9 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | — | 2 | — | — | — |
Temp °C | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 27 | 27 | 28 | 27 | 26 | 26 | 26 | 25 | 25 | 25 |
Feels °C | 23 | 23 | 23 | 25 | 25 | 26 | 26 | 25 | 26 | 27 | 27 | 28 | 29 | 30 | 28 | 27 | 26 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | E 14 | S 11 | S 12 | S 12 | S 12 | S 12 | ENE 12 | SSW 14 | E 13 | ENE 13 | ENE 12 | ENE 11 | ENE 10 | ENE 9 | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 |
| kJ | 577 | 89 | 184 | 137 | 101 | 71 | 960 | 136 | 851 | 1497 | 1247 | 921 | 625 | 282 | 173 | 168 | 110 | 104 | 104 | 112 |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 13 | NNE 10 | NNE 10 | NNE 8 | SSW 16 | SSW 11 | SSW 18 | SSW 14 | SW 15 | SW 13 | SSW 15 | E 14 | E 14 | SSW 14 | NW 10 | NW 10 | NW 9 | NW 9 | SSW 16 |
| kJ | 206 | 60 | 20 | 19 | 13 | 25 | 51 | 66 | 226 | 313 | 161 | 76 | 136 | 189 | 66 | 36 | 33 | 12 | 13 | 26 |
Swell 3 Height (m) Direction Period (s) | N 12 | NNE 11 | SSW 18 | SW 18 | SSE 10 | N 8 | SSW 15 | SSE 10 | SSW 16 | S 8 | S 15 | NNW 12 | SSW 15 | S 8 | SSW 8 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 |
| kJ | 3 | 24 | 30 | 12 | 11 | 5 | 47 | 10 | 91 | 49 | 115 | 14 | 72 | 33 | 13 | 36 | 34 | 33 | 16 | 14 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | — | E 12 | ENE 6 | — | SSE 8 | S 9 | S 8 | — | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 330 | 1868 | 1519 | 1496 | 1568 | 1100 | — | 1175 | 188 | — | 172 | 164 | 86 | — | 256 | 201 | 297 | 265 | 289 | 265 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 46 | 41 | 41 | 41 | 17 | 41 | 17 | 16 | 51 | 54 | 43 | 42 | 11 | 0 | 18 | 41 | 41 | 41 | 46 | 18 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kailua Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Kailua Beach Surf forecast
The above surf forecast table for Kailua Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kailua Beach can be found by selecting the local surf guide option on the grey menu. Our Kailua Beach 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 (Kailua Beach) 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 Kailua Beach 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.
Kailua Beach is 0 km (0 miles) from Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.
Nearest