
Surf Forecasts:
Kailua Beach surf forecast from 23 Jul 2026:
- Most powerful swell: Monday 27 Jul, 8PM (local time) - 6.5ft (2.0m), 13s period, ENE swell with 1,401 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 2.0m 13s and forecast to arrive on Monday (Jul 27) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 16s period and expected on Sunday (Jul 26) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Mon 27th Jul) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you: Kailua Beach is a beautiful stretch of sand, but for the next 16 days, it’s a tough slog for a decent surf. The water’s sitting around average for this time of year, nothing unusual there.
The outlook kicks off on Thursday the 23rd of July, but it’s not one to get excited about. We’ve got a mixed bag of swell from the ENE, coming in around 7 ft, but it’s short-period stuff at just 7 seconds, and the wind is a fresh cross-onshore at 22 mph. The energy is moderate (405), but the whole setup is lumpy and messy. That’s a theme that’ll stick around for a while.
Friday the 24th and Saturday the 25th are more of the same, with the wind actually turning straight onshore by Saturday, blowing at 19 mph. The swell holds around 7 ft, but it’s still short-period and the wave energy climbs a bit (555 on Saturday morning), but with onshore wind, the surface is just going to be sloppy. Not the kind of day you paddle out for.
Sunday the 26th sees the wind staying onshore, with the swell dropping slightly to 6 ft but the energy is up to 660 – still moderate, but the wind is a problem. We finally get a shift on Monday the 27th. The wind is still onshore, but the swell drops to 4 ft and the period stretches out to 14 seconds. That’s a proper groundswell, and the energy is solid (811). But here’s the rub: long-period swell like that, coming from the E, can break a bit too straight at a beach break like Kailua. It’ll be better shaped for sure, but the onshore wind is still going to mess with the face.
The standout in the whole window, if you can call it that, is Tuesday the 28th of July. The swell jumps back to 6 ft, still from the ENE, with a period of 13 seconds – that’s long-period energy. The wave energy is strong (1217), the biggest we’ll see. The wind is still onshore at 12-16 mph, but it’s a moderate breeze, not a howler. The conditions are still “poor” according to the report, but that’s the closest we get to something with push. It’s still a bit lumpy, but for a strong surfer, there’ll be some grunt in those waves.
Wednesday the 29th is a drop-off with the swell down to 5 ft, and the wind swings cross-onshore, making it choppy. The energy is moderate (699), but it’s not lining up.
Then we hit a real lull. From Thursday the 30th of July through to Friday the 7th of August, the swell is all over the place, mostly under 5 ft, with periods dropping back to 7-16 seconds. The wind is almost always onshore or cross-onshore, and the energy is weak to moderate. Thursday the 30th morning has a brief moment of light cross-shore wind from the ESE and a 4 ft swell, but it’s marginal at best.
The real highlight, promising but a long way off, is Monday the 3rd of August. The swell drops to just 3 ft, but the period is a massive 16 seconds. That’s very long-period groundswell. The energy is moderate (942). With that kind of period, the waves will have real shape and power, but they’ll be very straight at the beach. If you can find a rip or a bank, it’ll be a clean, long wall. The wind is still onshore at 16-19 mph, so it’s not glassy, but the underlying swell is promising.
The rest of that first week of August is much the same: small, short-period chop with onshore wind. Not worth dragging your board out for.
In short, there’s no standout, perfect day here. The closest we get is Tuesday the 28th of July for some raw power, or Monday the 3rd of August for that long, clean groundswell – but both are onshore. If you’re desperate for a paddle, aim for the 28th, but keep your expectations low. For beginners, the swell is often over 5 ft and the conditions are messy, so it’s not a learner-friendly window. Honestly, this setup looks more interesting for kite surfing than paddle surfing on most days.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu morning. Warm (max 25°C on Wed night, min 24°C on Thu night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Warm (max 25°C on Sat night, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 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) | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | E 14 | E 14 | E 14 | E 14 | E 13 | ENE 13 | ENE 12 | E 12 |
Wave Graph | |||||||||||||||||||
203 | 395 | 317 | 332 | 459 | 408 | 498 | 493 | 461 | 517 | 372 | 362 | 485 | 522 | 515 | 757 | 1217 | 1030 | 734 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | on | on | cross-on | on | on | cross-on | on | on | on |
High Tide | 12:30PM0.71m | 1:05PM0.75m | 1:36PM0.79m | 11:19PM0.41m | 2:05PM0.83m | 00:19AM0.43m | 2:32PM0.85m | 1:04AM0.45m | 2:58PM0.86m | 1:44AM0.47m | |||||||||
Low Tide | 3:25AM0.19m | 4:27AM0.17m | 5:23AM0.14m | 9:11PM0.40m | 6:10AM0.11m | 9:11PM0.38m | 6:50AM0.08m | 9:23PM0.37m | 7:26AM0.06m | 9:40PM0.35m | |||||||||
— | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:14 | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | |
mm | — | 2 | — | — | 2 | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 3 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 23 | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | E 12 | S 12 | S 13 | SSW 18 | S 12 | SSW 17 | SSW 16 | E 14 | SSW 19 | SSW 18 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | SSW 14 | S 14 | E 12 |
139 | 45 | 55 | 112 | 46 | 59 | 52 | 62 | 115 | 103 | 260 | 298 | 485 | 522 | 515 | 757 | 36 | 32 | 734 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 20 | SSW 20 | S 11 | SSW 18 | S 12 | S 12 | SSW 19 | E 13 | E 15 | SSW 16 | S 16 | SSW 16 | SSW 15 | SSW 15 | S 14 | S 10 | SSE 10 | SSW 14 |
52 | 77 | 75 | 20 | 104 | 25 | 25 | 125 | 55 | 72 | 90 | 131 | 83 | 73 | 42 | 65 | 2 | 9 | 38 | |
Swell 3 Height (m) Direction Period (s) | SSW 22 | NNW 10 | NNW 10 | S 13 | NNW 9 | SSW 21 | SSW 20 | SSW 16 | S 11 | E 12 | S 10 | S 12 | S 10 | S 11 | S 11 | SSE 10 | SSE 10 | S 9 | S 10 |
91 | 10 | 9 | 31 | 8 | 44 | 82 | 50 | 10 | 47 | 9 | 3 | 2 | 2 | 2 | 20 | 18 | 2 | 2 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NE 10 | ENE 13 | ENE 12 | NNE 7 |
203 | 395 | 317 | 332 | 459 | 408 | 498 | 493 | 461 | 517 | 372 | 362 | 406 | 289 | 254 | 211 | 1217 | 1030 | 107 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 41 | 46 | 122 | 46 | 48 | 122 | 46 | 41 | 122 | 41 | 42 | 43 | 41 | 41 | 122 | 18 | 41 | 41 | 17 |
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.










