
Surf Forecasts:
Kailua Beach surf forecast from 15 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 8PM (local time) - 7ft (2.2m), 9s period, ENE swell with 705 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 2.2m 9s and forecast to arrive on Thursday (Sep 17) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 15s period and expected on Sunday (Sep 20) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Thu 17th Sep) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright, Rusty here, and I’m looking at a rough stretch for Kailua Beach. The water’s a warm 81°F, which is about what you’d expect for the season, but that’s the only easy part of this outlook.
We’ve got a long run of onshore and cross-onshore winds from the ENE, just tearing up the face. Even when the swell’s coming from the right NE direction, that wind makes it a mess. Starting Monday the 14th, we get a tiny 3ft NE swell with a short 8-second period, but the wind is straight on it. The combined energy is a weak 94—hardly worth paddling out for.
The poor conditions don’t let up for almost two weeks. By Thursday the 17th, the swell jumps to 7ft from the ENE, with the energy climbing to a moderate 498, but the gusty cross-onshore wind makes it lumpy and choppy. That size is pushing into “not for beginners” territory, but it’s all blown out anyway.
The real gap here is long. You’re looking at a blank run until the very end of the month. Finally, around Monday the 28th, things get a little better. The wind eases right down to a light breeze. On Tuesday the 29th, we see a 7ft NE swell with a strong combined energy of 694. The wind goes light and cross-shore from the SE. The swell period is still short at 8 seconds, so it’s wind swell, but with the light wind, it might just clean up enough for some grovelly peaks.
Kailua Beach (Oahu) is a point break that breaks fairly consistently. When there’s a pulse of NE swell, it gets exposed. Crowds are possible, so if that Tuesday morning window opens up, be ready to share the water. The swell direction is spot on for the break’s preference, which is the only real positive in this whole stretch.
That’s the skinny: a long quiet spell with just one slim window late in the game. It can’t stay flat forever, and forecasts can change.
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Wed night. Warm (max 26°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Thu night. Warm (max 27°C on Fri morning, min 25°C on Thu night). Mainly fresh winds. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | NE 8 | NE 8 | NNE 8 | NE 8 | ENE 5 | E 10 | ENE 5 | NE 6 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 7 | E 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | ||||||||||||||||||||
80 | 51 | 39 | 128 | 58 | 51 | 94 | 188 | 494 | 642 | 614 | 427 | 461 | 404 | 428 | 437 | 464 | 355 | 327 | 355 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:26PM0.60m | 5:15AM0.70m | 3:27PM0.55m | 6:09AM0.67m | 3:00PM0.53m | 7:35AM0.64m | 9:58AM0.64m | 11:15AM0.68m | 11:53AM0.71m | 11:00PM0.37m | ||||||||||
Low Tide | 10:04PM0.13m | 11:06AM0.45m | 10:26PM0.15m | 12:06PM0.50m | 10:52PM0.18m | 11:26PM0.21m | 00:33AM0.25m | 3:03AM0.26m | 7:51PM0.34m | 4:34AM0.24m | ||||||||||
— | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | |
mm | — | — | — | — | — | — | — | 2 | 2 | 2 | 6 | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 26 | 26 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 23 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 8 | NNE 8 | E 12 | NNE 8 | NNE 7 | E 10 | E 10 | SSW 16 | SSW 16 | SSW 18 | SSW 17 | SW 17 | SSW 15 | SSW 16 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 |
80 | 51 | 39 | 44 | 37 | 37 | 73 | 96 | 25 | 25 | 124 | 116 | 71 | 44 | 47 | 62 | 86 | 79 | 74 | 71 | |
Swell 2 Height (m) Direction Period (s) | SSW 22 | NNE 10 | E 12 | SSW 20 | E 11 | E 10 | SW 18 | SW 17 | SSW 19 | SSW 19 | S 10 | S 10 | SSE 9 | SSW 16 | S 18 | S 18 | S 13 | N 11 | N 11 | N 11 |
45 | 9 | 26 | 37 | 37 | 51 | 79 | 76 | 37 | 36 | 2 | 2 | 7 | 26 | 25 | 25 | 3 | 2 | 2 | 9 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | E 13 | SW 20 | SW 12 | SW 19 | SW 18 | N 9 | S 11 | SE 11 | S 10 | NW 12 | NW 10 | S 21 | S 19 | S 9 | SSE 7 | SW 15 | S 8 | NW 9 | NW 8 |
8 | 14 | 60 | 6 | 95 | 80 | 7 | 2 | 4 | 2 | 6 | 4 | 9 | 29 | 2 | 5 | 8 | 1 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | ENE 4 | ENE 4 | ENE 5 | NE 8 | ENE 5 | ENE 5 | ENE 5 | NE 6 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 7 | E 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 |
14 | 18 | 24 | 128 | 58 | 51 | 94 | 188 | 494 | 642 | 614 | 427 | 461 | 404 | 428 | 437 | 464 | 355 | 327 | 355 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 17 | 18 | 41 | 122 | 18 | 41 | 42 | 41 | 41 | 46 | 41 | 41 | 41 | 41 | 41 | 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.










