Surf Forecasts:
Kailua Beach surf forecast from 30 Jul 2026:
- Most powerful swell: Saturday 1 Aug, 11PM (local time) - 8ft (2.5m), 8s period, ENE swell with 889 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 2.5m 8s and forecast to arrive on Saturday (Aug 01) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 14s period and expected on Thursday (Jul 30) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 1st Aug) | 8ft (2.5m) 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 – this is a rough one for Kailua Beach. The next couple of weeks are looking pretty bleak for any decent surf, so we’re not going to waste time pretending otherwise.
The problem is a persistent, strong cross-onshore wind from the east and east-northeast that just won’t let up. For the first ten days, from Thursday the 30th of July right through to Monday the 10th of August, it’s a write-off. The wind is howling between 12 mph and 25 mph, and combined with a messy, short-period swell (mostly 6 to 8 seconds), the surf is just blown out, lumpy, and choppy. The wave energy is moderate to strong at times, hitting 1055 on the 1st of August, but it’s all for nothing with that wind. This is more of a kite-surfing setup than a paddling one.
There’s a tiny flicker of hope on Tuesday the 11th of August. The wind swings to the southeast and drops to a light 6 mph, becoming a light cross-shore. The swell is still small, only 4 ft from the east-northeast, with a period of 7-8 seconds, and the energy is weak (around 203). The forecast calls it marginal, and honestly, at a point break like Kailua Beach, that’s the best we’re going to see in this window. The water temp is feeling about average for the time of year, nothing special.
After that brief window, it’s straight back to the same old story: on Wednesday the 12th of August, the cross-onshore winds return and the surf drops off again into the poor category.
So, the best you’ll get is a shot at some small, mediocre waves on the 11th of August. Don’t get your hopes up. The rest of the 16-day forecast is a blank run. This is one of those stretches where it’s better to leave the board in the car and go for a swim.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Thu morning, min 24°C on Fri night). Winds increasing (light winds from the E on Thu afternoon, strong winds from the ENE by Fri night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 25°C on Sun morning, min 24°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
AM | 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 | E 7 | E 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 12 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 276 | 234 | 298 | 397 | 478 | 726 | 836 | 871 | 889 | 740 | 705 | 574 | 404 | 361 | 268 | 593 | 515 | 352 | 269 | 218 | 176 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:45PM0.86m | 3:04AM0.52m | 4:06PM0.83m | 3:48AM0.54m | 4:25PM0.79m | 4:37AM0.55m | 4:43PM0.75m | 5:34AM0.57m | 5:00PM0.69m | 6:49AM0.58m | 5:12PM0.63m | 8:35AM0.61m | 5:05PM0.58m | ||||||||
Low Tide | 8:31AM0.08m | 10:19PM0.31m | 9:03AM0.12m | 10:40PM0.28m | 9:35AM0.18m | 11:03PM0.25m | 10:10AM0.26m | 11:29PM0.22m | 10:50AM0.35m | 00:00AM0.19m | 11:41AM0.45m | 00:39AM0.17m | 1:20PM0.54m | 1:33AM0.15m | |||||||
 |  |  | | |  | | | | | | | | | | |  |  |  | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | 2 |
Temp °C | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 |
Feels °C | 28 | 28 | 26 | 25 | 24 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 24 | 24 | 24 | 26 | 26 | 26 | 28 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | S 13 | SSW 13 | E 16 | E 15 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | E 12 | E 12 | ENE 9 | ENE 12 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | NNE 8 |
| kJ | 56 | 59 | 81 | 157 | 231 | 205 | 205 | 196 | 194 | 188 | 136 | 87 | 78 | 78 | 268 | 593 | 515 | 352 | 269 | 218 | 6 |
Swell 2 Height (m) Direction Period (s) | SW 18 | N 9 | S 13 | N 8 | N 8 | N 8 | N 8 | N 11 | N 10 | N 9 | N 9 | N 8 | N 8 | SSE 13 | E 12 | ENE 15 | SSW 11 | S 13 | NNE 9 | NNE 9 | S 12 |
| kJ | 12 | 7 | 53 | 23 | 12 | 11 | 4 | 9 | 17 | 15 | 14 | 12 | 10 | 17 | 151 | 21 | 13 | 14 | 8 | 15 | 11 |
Swell 3 Height (m) Direction Period (s) | E 19 | E 18 | N 9 | S 12 | S 12 | S 12 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 13 | SSW 13 | S 13 | SSW 12 | N 6 | SSW 12 | N 10 | N 9 | S 13 | S 12 | S 11 |
| kJ | 29 | 24 | 14 | 27 | 26 | 11 | 19 | 18 | 19 | 19 | 7 | 17 | 13 | 15 | 15 | 14 | 8 | 7 | 13 | 12 | 9 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | E 7 | E 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — | — | — | — | ENE 8 |
| kJ | 276 | 234 | 298 | 397 | 478 | 726 | 836 | 871 | 889 | 740 | 705 | 574 | 404 | 361 | — | — | — | — | — | — | 176 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 41 | 41 | 41 | 46 | 56 | 122 | 123 | 52 | 125 | 48 | 48 | 42 | 46 | 42 | 17 | 17 | 17 | 17 | 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.
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