Surf Forecasts:
Kailua Beach surf forecast from 30 Aug 2026:
- Most powerful swell: Saturday 5 Sep, 11AM (local time) - 10ft (3.0m), 8s period, ENE swell with 1,073 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 3.0m 8s and forecast to arrive on Saturday (Sep 05) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 10s period and expected on Sunday (Sep 06) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Sat 5th Sep) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright, Rusty here, let’s have a look at what’s on the cards for Kailua Beach (point).
Straight up, I gotta be honest with you—this 16-day window is a bit of a write-off for us. The first real sniff of anything rideable doesn’t show up until September 9th, so we’re looking at a solid week and a half of waiting with no worthwhile surf. From now through to September 8th, it’s all onshore slop and messy conditions, with that tradewind howling from the ENE at 19 to 28 miles per hour. The water temp’s about average for this time of year, nothing out of the ordinary.
The one and only standout that even gets a mention here kicks off on Wednesday, September 9th, and into Thursday, September 10th. The swell builds to around 8 ft to 10 ft out of the ENE, with a period of 8 to 10 seconds. Now, that’s a decent amount of water moving through—energy values are pushing between 924 and a whopping 1708 (moderate to very strong energy). But here’s the catch: it’s cross-onshore to cross-offshore wind, and the quality is described as marginal, tide-dependant. It’s not going to be perfect, but if you’re keen and you pick your tide right, there could be a few fun ones. The combination of that ENE swell direction and the optimum direction for the break (NE) is a solid match, so the lines should have some shape to them.
Because that swell is over 8 ft, this is strictly for experienced surfers only—beginners should sit this one out. The longer period (10 seconds) means the waves will have a bit of push and better shape, but that big energy can make it a handful at an exposed point.
After that brief window, it quickly fades back into onshore junk and small, weak surf for the rest of the run. Honestly, for the first week and up to September 8th, there’s nothing worth paddling out for.
So, if you’re hanging for a wave, your best bet is to mark your calendar for September 9th and 10th. It won’t be perfect, but it’s really the only game in town. Otherwise, you might as well give the board a rest and wait for a better forecast.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun night. Warm (max 26°C on Sun morning, min 25°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Thu morning. Warm (max 26°C on Wed morning, min 25°C on Tue night). Mainly strong winds. | ||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 469 | 334 | 301 | 154 | 443 | 419 | 419 | 410 | 432 | 483 | 402 | 335 | 331 | 358 | 373 | 366 | 456 | 495 | 654 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | on |
High Tide | 3:44AM0.66m | 3:35PM0.72m | 4:29AM0.68m | 3:51PM0.67m | 5:22AM0.68m | 4:02PM0.61m | 6:31AM0.67m | 3:59PM0.56m | 8:17AM0.68m | 10:21AM0.72m | |||||||||
Low Tide | 9:41PM0.18m | 9:31AM0.26m | 10:03PM0.15m | 10:11AM0.34m | 10:30PM0.13m | 10:57AM0.42m | 11:01PM0.13m | 12:04PM0.50m | 11:40PM0.13m | 00:39AM0.15m | 2:15AM0.17m | ||||||||
 |  | |  |  | |  | | | | | | | |  | | | | | |
 | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — |
 | 6:50 | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — |
mm | — | — | — | 1 | 1 | — | — | — | 1 | 4 | 1 | — | 2 | 2 | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 |
Feels °C | 22 | 23 | 24 | 23 | 22 | 24 | 22 | 23 | 24 | 23 | 26 | 25 | 25 | 22 | 22 | 21 | 22 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | E 12 | ENE 11 | ENE 11 | NNE 7 | S 11 | S 10 | S 10 | SSW 18 | SSW 18 | S 17 | S 16 | S 16 | E 13 | E 13 | E 12 | E 12 | E 14 | E 14 | E 13 |
| kJ | 75 | 43 | 40 | 96 | 21 | 19 | 18 | 107 | 107 | 93 | 130 | 79 | 85 | 119 | 72 | 69 | 229 | 229 | 222 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | ENE 10 | SSW 15 | SSW 14 | S 19 | S 10 | S 12 | S 10 | E 14 | E 14 | S 15 | S 14 | S 14 | E 15 | S 13 | S 13 | S 13 |
| kJ | 26 | 25 | 25 | 37 | 22 | 21 | 30 | 7 | 11 | 8 | 33 | 66 | 68 | 65 | 60 | 68 | 55 | 55 | 30 |
Swell 3 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 15 | S 11 | S 21 | S 19 | SSW 14 | SW 14 | E 15 | E 14 | S 10 | S 10 | S 11 | S 10 | S 10 | S 14 | S 21 | N 13 | NNE 12 |
| kJ | 28 | 26 | 23 | 22 | 8 | 29 | 18 | 8 | 4 | 14 | 8 | 8 | 21 | 18 | 8 | 57 | 9 | 3 | 13 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 |
| kJ | 469 | 334 | 301 | 154 | 443 | 419 | 419 | 410 | 432 | 483 | 402 | 335 | 331 | 358 | 373 | 366 | 456 | 495 | 654 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 52 | 46 | 51 | 41 | 46 | 46 | 41 | 41 | 122 | 41 | 41 | 46 | 41 | 46 | 126 | 42 | 125 | 206 | 152 |
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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