Surf Forecasts:
Kailua Beach surf forecast from 1 Sep 2026:
- Most powerful swell: Saturday 5 Sep, 2PM (local time) - 8ft (2.4m), 13s period, ENE swell with 1,945 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 2.4m 13s and forecast to arrive on Saturday (Sep 05) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 12s period and expected on Friday (Sep 04) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sat 5th Sep) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright, Rusty here, let's get into it.
Lookin' at the 16-day window for Kailua Beach, and honestly, it is a tough stretch. The forecast is plastered with onshore and cross-onshore ENE winds that just wreck the surface. For the first nine or ten days, it's a write-off. We see howling winds and messy conditions with poor surf ratings across the board. There is a big run of energy mid-period, with combined swell energy hitting 1950 (strong) on Saturday, September 5th, but it’s all blowing out with that wind. It’s a real bummer.
The water temp is sitting at 80°F, which is bang on average for this time of year, nothing unusual there.
The only glimmer in this whole outlook comes on Tuesday, September 8th. Afternoon kicks in with a glassy surface, light ESE breeze at just 3 mph. That’s what you’ve been waiting for. The swell is small, around 5ft from the E with a short, unexciting period of 6 seconds, so not much power behind it (combined energy of 411 – moderate). But the glassy conditions mean at least you’ll get a clean, rideable wave. For the sheer lack of anything else, that's your standout window. However, mixed with the short period and small size, the quality is marginal.
After that brief reprieve, it’s right back into the onshore chop. The whole second week from the 9th onward looks pretty grim again with persistent cross-onshore winds and steadily dropping swell heights, fading down to under 3ft by the 13th.
So, if you’re set on getting wet, keep your eyes locked on that afternoon window on September 8th. Otherwise, it’s a long stretch of blown-out conditions ahead.
Keep it salty,
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 26°C on Mon afternoon, min 25°C on Mon afternoon). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Sun morning. Warm (max 26°C on Sat morning, min 25°C on Thu afternoon). Winds decreasing (strong winds from the ENE on Fri morning, moderate winds from the E by Sat night). | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
PM | 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 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 419 | 459 | 421 | 493 | 527 | 494 | 522 | 681 | 595 | 574 | 785 | 693 | 482 | 1630 | 1930 | 1766 | 1723 | 1723 | 1451 | 1369 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | on |
High Tide | 3:51PM0.67m | 5:22AM0.68m | 4:02PM0.61m | 6:31AM0.67m | 3:59PM0.56m | 8:17AM0.68m | 10:21AM0.72m | 11:33AM0.78m | 12:19PM0.83m | 11:14PM0.40m | ||||||||||
Low Tide | 10:30PM0.13m | 10:57AM0.42m | 11:01PM0.13m | 12:04PM0.50m | 11:40PM0.13m | 00:39AM0.15m | 2:15AM0.17m | 4:01AM0.16m | 7:47PM0.35m | |||||||||||
 |  | |  |  |  | |  | | | | | | | | |  |  | | | |
 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — |
 | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — |
mm | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | 1 | 3 | 3 | 2 | — |
Temp °C | 26 | 26 | 25 | 26 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 24 | 24 | 22 | 25 | 23 | 24 | 24 | 24 | 22 | 21 | 21 | 21 | 21 | 21 | 26 | 26 | 26 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 10 | SSW 19 | SSW 18 | SSW 18 | S 17 | S 16 | S 16 | E 13 | SE 13 | SSE 12 | SSE 12 | E 13 | E 14 | S 11 | S 10 | S 11 | SW 10 | SW 11 | ENE 13 | ENE 12 |
| kJ | 19 | 74 | 107 | 107 | 93 | 130 | 79 | 123 | 45 | 83 | 145 | 225 | 289 | 112 | 77 | 89 | 28 | 30 | 1451 | 1369 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | S 10 | S 10 | S 12 | S 10 | E 14 | E 14 | S 15 | S 14 | E 12 | N 9 | S 11 | S 11 | NNE 11 | NNE 10 | NNE 10 | N 8 | SSW 16 | SSW 19 | SSW 18 |
| kJ | 20 | 18 | 7 | 11 | 8 | 33 | 66 | 69 | 66 | 107 | 2 | 166 | 155 | 12 | 20 | 31 | 13 | 26 | 71 | 109 |
Swell 3 Height (m) Direction Period (s) | S 19 | SW 14 | SW 14 | E 15 | E 14 | S 10 | S 12 | S 11 | S 10 | SSW 14 | E 14 | N 9 | N 12 | S 20 | SSW 18 | SSW 18 | SSE 10 | SSE 10 | SW 11 | SSE 10 |
| kJ | 29 | 7 | 8 | 4 | 14 | 8 | 10 | 9 | 8 | 38 | 191 | 1 | 3 | 7 | 30 | 30 | 10 | 9 | 29 | 19 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | — | — |
| kJ | 419 | 459 | 421 | 493 | 527 | 494 | 522 | 681 | 595 | 574 | 785 | 693 | 482 | 1630 | 1930 | 1766 | 1723 | 1723 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 48 | 41 | 41 | 122 | 41 | 46 | 50 | 123 | 51 | 123 | 123 | 122 | 122 | 46 | 41 | 41 | 17 | 41 | 46 | 18 |
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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