Surf Forecasts:
Kailua Beach surf forecast from 4 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 5AM (local time) - 5ft (1.6m), 12s period, ENE swell with 689 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 1.6m 12s and forecast to arrive on Tuesday (Aug 04) 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 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 (1.6m) 12s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright, mate. Rusty here, and I’ve had a look at the charts for Kailua Beach. I gotta be straight with you – the next 16 days are looking grim for any decent paddle surfing. The whole run is a bit of a washout, so don’t hold your breath for any standout sessions. The reality is that for this area, a long blank stretch like this isn't totally out of the ordinary.
From the 4th of August all the way through to the 19th, the story is the same: we’ve got swell, but it’s all coming in from the ENE, which is a cross-to-straight onshore wind direction here. The water temp is doing its normal thing for this time of year, so no weird anomalies to report. The wind, mostly a gentle to fresh breeze, is constantly messing things up, keeping the surface choppy and lumpy. The combined wave energy is weak to moderate at best, reading between 88 and 748 for most of the run, which just isn’t putting together any kind of shape. The period is short too, mostly 5 to 8 seconds, meaning weak, wind-affected junk.
The swell does build into the second week, hitting 8ft on the 15th of August, and even 8ft on the 17th with the energy spiking to 1844 – that’s moderate energy. But it’s all accompanied by fresh cross-onshore winds and a short, choppy period. At that size and wind, this beach setup is looking far more interesting for the kite surfers than us.
Honestly, the whole 16-day window is a write-off for a clean paddle. Don’t bother waxing the board for this one. Forecasts can change, but for now, there’s nothing to get excited about.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon night. Warm (max 25°C on Mon night, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun morning. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly fresh winds. | ||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 9 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 5 | ENE 5 | ENE 5 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 355 | 515 | 436 | 469 | 312 | 222 | 68 | 60 | 146 | 33 | 64 | 72 | 170 | 226 | 239 | 326 | 330 | 387 | 375 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on |
High Tide | 6:49AM0.58m | 5:12PM0.63m | 8:35AM0.61m | 5:05PM0.58m | 10:38AM0.68m | 11:52AM0.77m | 12:41PM0.84m | 9:57PM0.40m | 1:22PM0.90m | 11:49PM0.42m | |||||||||
Low Tide | 00:00AM0.19m | 11:41AM0.45m | 00:39AM0.17m | 1:20PM0.54m | 1:33AM0.15m | 2:46AM0.13m | 4:07AM0.10m | 8:55PM0.40m | 5:18AM0.06m | 8:36PM0.37m | |||||||||
 |  | |  | | |  |  | | | | | | | | |  | | | |
 | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — |
 | 7:08 | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — |
mm | 4 | — | — | 1 | — | — | — | 1 | 1 | — | — | — | — | — | — | — | 1 | — | 4 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 25 | 24 | 24 | 23 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | E 12 | ENE 11 | SSW 12 | S 13 | NNE 9 | NNE 8 | ENE 9 | ENE 8 | NNW 8 | ENE 8 | NNW 7 | NE 9 | NE 11 | NE 10 | NE 10 | SSW 13 | SSW 13 | S 18 | S 16 |
| kJ | 101 | 515 | 13 | 14 | 8 | 7 | 68 | 59 | 12 | 32 | 10 | 22 | 42 | 28 | 17 | 17 | 17 | 24 | 20 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | S 13 | NNE 9 | S 13 | S 12 | S 12 | NNW 8 | S 11 | NNW 7 | NE 10 | NNW 7 | N 7 | N 7 | N 6 | SSW 18 | S 18 | SSW 13 | SSW 12 |
| kJ | 14 | 14 | 13 | 8 | 13 | 12 | 11 | 7 | 10 | 10 | 14 | 9 | 4 | 3 | 3 | 30 | 24 | 16 | 14 |
Swell 3 Height (m) Direction Period (s) | N 7 | SSE 12 | N 10 | SSW 11 | SSW 11 | SSW 11 | NNE 8 | S 12 | N 8 | S 11 | S 11 | NE 12 | SW 14 | SSW 14 | SSW 14 | S 10 | SSE 10 | N 7 | SSE 10 |
| kJ | 4 | 15 | 8 | 12 | 11 | 11 | 6 | 10 | 1 | 9 | 9 | 23 | 8 | 20 | 19 | 8 | 9 | 4 | 9 |
Wind waves Height (m) Direction Period (s) | ENE 9 | — | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 5 | ENE 5 | ENE 8 | ENE 5 | ENE 5 | ENE 5 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 355 | — | 436 | 469 | 312 | 222 | 62 | 60 | 146 | 33 | 64 | 72 | 170 | 226 | 239 | 326 | 330 | 387 | 375 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 17 | 41 | 17 | 17 | 17 | 16 | 17 | 17 | 17 | 18 | 41 | 41 | 41 | 46 | 44 | 46 | 41 | 46 | 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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