Surf Forecasts:
Kailua Beach surf forecast from 11 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 2PM (local time) - 7ft (2.1m), 8s period, ENE swell with 563 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 2.1m 8s and forecast to arrive on Thursday (Sep 17) 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 0.4m 18s period and expected on Wednesday (Sep 16) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Thu 17th Sep) | 7ft (2.1m) 8s |
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: we're gonna have a lean outlook for the next two weeks. I'm looking at the whole 16-day window for Kailua Beach, and truth be told, it's a pretty tough stretch. The surf just isn't cooperating.
The wave energy is weak to moderate for most of the run, sitting mostly in the 100-300 range—nothing that's gonna get your heart racing. The wind is the real killer here, a persistent ENE trade that's blowing cross-onshore for most of the period, keeping things choppy and messy.
Now, the conditions are telling us that the water temp is 80°F, which is basically spot on average for this time of year, so no surprises there.
Let's walk through it. The first couple of weeks are a total write-off. From the 10th right through the 22nd, the "scored out of 10" is a flat zero on every single session. We're looking at a solid 12-day gap where I wouldn't even bother waxing up. The swell is there, but it's junk—short period, cross-onshore breeze, and it's being labeled as "poor surf conditions" day after day.
The one and only moment that deserves a mention is on the 24th of September, Thursday morning. That's far out, over a week away, so don't book your flights yet. But the numbers start to look a little friendlier. We get a 5ft swell from the east with an 11-second period, and the wind drops to a light 6 mph cross-on. The combined energy climbs up to 577—still moderate, but it's the best we've got. The forecast calls it "marginal" with a score of 1/10, which is a glimmer of hope compared to the zeros. It won't be classic, but if the light wind holds, you might find something rideable in the morning.
Bottom line: The Kailua Beach point is exposed to the NE, and while there's swell, the wind is just too strong and onshore to make it happen. If you've got a kite and it's blowing 19 mph on the 16th and 17th, it might be a different story for the windsurfing crew. For us paddle surfers, it's a waiting game.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Warm (max 26°C on Tue morning, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 7 | ENE 7 | E 7 | ENE 11 | E 10 | ENE 10 | NE 9 | NNE 9 | NNE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | ENE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 247 | 181 | 113 | 350 | 216 | 160 | 125 | 135 | 138 | 155 | 145 | 156 | 149 | 149 | 108 | 75 | 128 | 336 | 340 | 469 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | on | cross-on | on | on | cross-on | on | on |
High Tide | 2:20PM0.82m | 2:33AM0.67m | 2:42PM0.77m | 3:12AM0.71m | 3:01PM0.71m | 3:52AM0.73m | 3:16PM0.65m | 4:32AM0.72m | 3:26PM0.60m | 5:15AM0.70m | 3:27PM0.55m | 6:09AM0.67m | 3:00PM0.53m | |||||||
Low Tide | 8:42PM0.19m | 8:26AM0.19m | 9:02PM0.16m | 9:06AM0.25m | 9:22PM0.14m | 9:44AM0.32m | 9:43PM0.13m | 10:23AM0.39m | 10:04PM0.13m | 11:06AM0.45m | 10:26PM0.15m | 12:06PM0.50m | 10:52PM0.18m | |||||||
 |  |  | | | | |  | | | | | | | | |  |  | |  | |
 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — |
 | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 2 |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 26 | 24 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 26 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | E 12 | E 11 | NNE 8 | NNE 8 | NE 8 | NNE 9 | NE 9 | NNE 9 | NNE 9 | NE 9 | NE 9 | ESE 8 | NE 8 | NE 8 | NE 8 | NNE 8 | E 8 | SW 18 | SW 18 | SW 17 |
| kJ | 72 | 94 | 58 | 51 | 57 | 94 | 115 | 135 | 138 | 155 | 145 | 6 | 149 | 149 | 108 | 33 | 29 | 80 | 79 | 76 |
Swell 2 Height (m) Direction Period (s) | NW 9 | SSW 12 | E 11 | SSW 15 | SSW 15 | SSW 16 | SW 16 | ENE 9 | SSW 15 | SW 15 | SSW 14 | SW 14 | SSW 22 | E 13 | E 12 | E 12 | E 11 | S 6 | SW 11 | SE 11 |
| kJ | 13 | 14 | 89 | 22 | 22 | 24 | 10 | 46 | 21 | 8 | 20 | 8 | 45 | 14 | 26 | 43 | 37 | 1 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 16 | SSW 16 | NW 8 | SSW 12 | NW 8 | SW 13 | SSW 13 | SW 12 | NW 13 | E 8 | SE 8 | E 7 | SW 21 | SW 20 | ESE 8 | SW 19 | SW 12 | NW 9 | S 11 |
| kJ | 32 | 26 | 26 | 3 | 13 | 3 | 7 | 17 | 6 | 7 | 1 | 2 | 4 | 18 | 60 | 13 | 95 | 5 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | E 7 | ENE 11 | E 10 | ENE 10 | ENE 10 | E 4 | E 9 | ENE 9 | E 5 | NE 8 | — | — | — | ENE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 247 | 181 | 113 | 350 | 216 | 160 | 125 | 17 | 78 | 79 | 16 | 156 | — | — | — | 75 | 128 | 336 | 340 | 469 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 42 | 18 | 41 | 17 | 17 | 41 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 41 | 41 | 41 | 43 | 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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