Surf Forecasts:
Kailua Beach surf forecast from 8 Jul 2026:
- Most powerful swell: Thursday 9 Jul, 5AM (local time) - 8ft (2.5m), 8s period, ENE swell with 673 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 2.5m 8s and forecast to arrive on Thursday (Jul 09) 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 0.4m 14s period and expected on Tuesday (Jul 07) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Thu 9th Jul) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
Alright folks, Rusty here. Let’s get straight into it for Kailua Beach.
Honestly, it’s a rough stretch ahead. We’ve got a solid 16-day window, but the surf is on the menu for pretty much the entire first two weeks, and it’s all pretty average. The wind is the main villain here – it’s hammering in from the ENE almost constantly, blowing fresh and keeping things lumpy, choppy, or just plain messy. There’s a decent amount of swell energy in the water (moderate to strong energy, with values like 525 and 688), but it’s mostly short-period windswell, around 7 to 8 seconds, so it’s lacking that punch and shape you want for a proper session.
The first real window of anything worth looking at doesn’t show up until Tuesday, July 21st. Overnight, the swell direction swings around to a long-period E groundswell, with a period stretching to 16 seconds. That’s a proper groundswell, and it’ll bring some real energy (1019 energy). The wave height drops to around 4 ft, but that long period will make it more powerful and better shaped. It’s a point break setup, so it should handle that long-period swell better than a beach break. The wind is still a cross-offshore, so it won’t be glassy, but it’s a massive improvement on the earlier slop.
The standout here is Tuesday, July 21st morning. That’s your best bet. The swell is coming from the open ocean, it’s long-period, and the energy is solid. The water temp is about average for the time of year, sitting around 79°. It’s a point break, so crowds are possible here, especially on a Tuesday. Just keep in mind that after that, the energy drops off a cliff. By Wednesday, July 22nd, the swell fades to 3 ft with a 15-second period, and the wind turns more cross-onshore, so it’s back to being marginal.
So, for the whole 16 days, there’s basically one decent window. Don’t get too excited about the rest of it. The first two weeks are a write-off for clean surfing. The end of the window has a tiny flicker of hope, but it’s a long-range call, so treat it with a bit of caution.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Wed night. Warm (max 25°C on Tue afternoon, min 24°C on Tue afternoon). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Fri night. Warm (max 25°C on Fri afternoon, min 24°C on Fri afternoon). Mainly fresh winds. | ||||||||||||||||||||
Tue 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 522 | 456 | 456 | 428 | 588 | 439 | 373 | 417 | 417 | 432 | 528 | 475 | 397 | 412 | 456 | 546 | 581 | 439 | 362 | 319 | 358 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | on | on | on | on | on | cross-on | on | on | on | cross-on |
High Tide | 6:48PM0.62m | 10:50AM0.63m | 7:11PM0.56m | 11:56AM0.74m | 12:47PM0.83m | 9:36PM0.45m | 1:33PM0.91m | 11:18PM0.44m | 2:16PM0.96m | 00:30AM0.44m | 2:56PM0.98m | 1:30AM0.45m | |||||||||
Low Tide | 2:40AM0.17m | 4:10PM0.54m | 3:32AM0.13m | 4:28AM0.08m | 8:34PM0.45m | 5:24AM0.03m | 8:53PM0.41m | 6:18AM-0.01m | 9:22PM0.38m | 7:09AM-0.04m | 9:53PM0.36m | 7:56AM-0.04m | |||||||||
 |  | | |  |  |  | | | | | | | | | | | | | | | |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 |
 | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | 7:15 |
mm | — | — | — | — | 2 | 1 | — | 1 | 2 | 2 | 5 | — | — | — | 2 | 1 | 2 | 1 | — | — | — |
Temp °C | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 25 | 24 | 25 | 25 | 24 | 24 | 25 | 24 | 25 |
Feels °C | 22 | 21 | 22 | 22 | 21 | 23 | 23 | 22 | 24 | 24 | 22 | 21 | 23 | 21 | 24 | 23 | 21 | 22 | 23 | 22 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 18 | SSW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 15 | NNE 9 | SSW 14 |
| kJ | 66 | 63 | 36 | 35 | 34 | 30 | 27 | 11 | 24 | 11 | 11 | 34 | 30 | 48 | 41 | 40 | 39 | 36 | 21 | 25 | 19 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 18 | S 18 | — | S 16 | S 16 | S 15 | SW 21 | SW 21 | SSW 19 | S 12 | S 12 | S 13 | S 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSW 14 | SSW 19 |
| kJ | 2 | 2 | 6 | 6 | — | 5 | 5 | 4 | 18 | 17 | 37 | 11 | 11 | 13 | 13 | 14 | 14 | 14 | 13 | 20 | 36 |
Swell 3 Height (m) Direction Period (s) | NW 9 | — | — | — | SE 8 | — | S 24 | S 23 | SW 18 | W 14 | W 13 | — | S 14 | — | W 13 | S 6 | W 16 | S 20 | SW 21 | SSE 11 | SSE 11 |
| kJ | 3 | — | — | — | 3 | — | 11 | 10 | 12 | 4 | 4 | — | 4 | — | 3 | 1 | 5 | 8 | 17 | 12 | 11 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | NE 8 |
| kJ | 522 | 456 | 456 | 428 | 588 | 439 | 373 | 417 | 417 | 432 | 528 | 475 | 397 | 412 | 456 | 546 | 581 | 439 | 362 | 319 | 358 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 122 | 46 | 48 | 51 | 46 | 46 | 50 | 41 | 46 | 48 | 46 | 46 | 122 | 41 | 41 | 46 | 41 | 41 | 48 | 17 | 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.
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