Surf Forecasts:
Kailua Beach surf forecast from 3 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 5AM (local time) - 5ft (1.5m), 12s period, ENE swell with 612 kJ wave energy.
Best Forecast Surf Conditions for Kailua Beach this week:
The most powerful waves expected at Kailua Beach in the next 16 days are 1.5m 12s and forecast to arrive on Tuesday (Aug 04) 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 0.3m 12s period and expected on Thursday (Aug 06) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Tue 4th Aug) | 5ft (1.5m) 12s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s on offer for Kailua Beach. I’ve got to be straight with you – this is a tough one. The next 16 days are looking pretty grim for surfers, so don’t hold your breath.
The overall pattern is dominated by persistent onshore and cross-onshore winds out of the east-northeast. The swell is coming from the same direction, right on the nose, which is creating messy, choppy, and generally poor conditions. The water temp is sitting about average for the time of year, so nothing wild there.
The first real chance of anything surfable doesn’t really pop up until Tuesday, August 4th in the morning. We’ve got a 5 ft swell from the ENE with a period of 11 seconds, giving a moderate wave energy of 540. That longer period is a bit of a tease, but with a 9 mph wind blowing directly onshore, it’s going to be a bumpy, difficult paddle. The forecast calls it “marginal” at best. It’s not a day to get excited about.
After that, it’s a long, dry stretch. From Tuesday afternoon all the way through to the end of the forecast on August 18th, every single session is marked as poor surf. The winds don’t let up, staying in that 12-22 mph range from the east or east-northeast, and the swell is almost always onshore. The combined energy stays moderate, but it’s all wasted energy, just creating bumpy, lumpy seas.
There is a bit of a swell bump on August 9th (Sunday) with 7 ft waves from the ENE, and again on August 17th (Monday) with 7 ft. That size is getting into the too-big-for-beginners zone, and the period is short at 8 seconds. With the wind howling from the same direction at 19-22 mph, these are strictly for the hardcore, and even then, it’s going to be a washing machine. That setup honestly looks more interesting for kite surfing than paddle surfing.
There are no standout days here. The best I can honestly say is that Tuesday, August 4th morning is the least bad option, but with the onshore wind, it’s still a struggle. The rest of the window is a write-off for clean surf. Don’t leave your board in the car, but don’t expect a classic session either.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sun night. Warm (max 26°C on Mon morning, min 25°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Warm (max 25°C on Wed night, min 25°C on Wed night). Mainly fresh winds. | ||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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 | ENE 8 | ENE 8 | ENE 8 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 5 | ENE 6 | E 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 512 | 318 | 331 | 329 | 540 | 460 | 411 | 295 | 237 | 90 | 59 | 46 | 32 | 97 | 67 | 245 | 233 | 219 | 277 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:34AM0.57m | 5:00PM0.69m | 6:49AM0.58m | 5:12PM0.63m | 8:35AM0.61m | 5:05PM0.58m | 10:38AM0.68m | 11:52AM0.77m | 12:41PM0.84m | 9:57PM0.40m | |||||||||
Low Tide | 11:29PM0.22m | 10:50AM0.35m | 00:00AM0.19m | 11:41AM0.45m | 00:39AM0.17m | 1:20PM0.54m | 1:33AM0.15m | 2:46AM0.13m | 4:07AM0.10m | 8:55PM0.40m | |||||||||
 |  |  | | |  |  | | | |  | | |  | | | | | | |
 | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | 7:08 | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — |
mm | 2 | 1 | — | 3 | 1 | — | — | — | — | 2 | 2 | — | — | — | — | 1 | — | — | 2 |
Temp °C | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 23 | 26 | 26 | 25 | 28 | 28 | 27 | 26 | 27 | 25 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | E 13 | N 6 | E 12 | E 12 | ENE 11 | SSW 12 | ENE 10 | ENE 10 | NNE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | NE 10 | NNW 7 | NE 11 | NE 10 | NE 10 | NE 9 |
| kJ | 87 | 25 | 76 | 101 | 540 | 13 | 411 | 295 | 7 | 90 | 59 | 43 | 32 | 23 | 9 | 41 | 28 | 17 | 31 |
Swell 2 Height (m) Direction Period (s) | N 8 | E 13 | N 7 | SSW 12 | SSE 14 | SSE 13 | S 13 | NNE 9 | S 12 | S 12 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | ENE 12 | N 7 | N 6 | N 6 | SSW 13 |
| kJ | 12 | 84 | 4 | 14 | 21 | 16 | 14 | 8 | 12 | 11 | 7 | 11 | 10 | 10 | 14 | 8 | 3 | 3 | 17 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | N 8 | SSW 12 | S 13 | SSW 12 | N 10 | NNE 9 | S 13 | SSW 11 | NNE 8 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | SSW 14 | SSW 14 | N 6 |
| kJ | 17 | 10 | 15 | 3 | 14 | 8 | 8 | 13 | 11 | 6 | 11 | 10 | 9 | 9 | 9 | 9 | 20 | 19 | 3 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | ENE 11 | — | — | ENE 9 | ENE 6 | ENE 5 | ENE 5 | ENE 5 | ENE 7 | ENE 5 | ENE 6 | E 7 | ENE 7 | ENE 7 |
| kJ | 512 | 318 | 331 | 329 | — | 460 | — | — | 237 | 80 | 46 | 46 | 24 | 97 | 67 | 245 | 233 | 219 | 277 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 42 | 43 | 46 | 17 | 17 | 17 | 17 | 41 | 17 | 17 | 41 | 41 | 18 | 41 | 46 | 41 | 41 | 44 | 41 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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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.
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