Surf Forecasts:
Kailua Beach surf forecast from 13 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 11PM (local time) - 11ft (3.5m), 9s period, E swell with 2,098 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 3.5m 9s and forecast to arrive on Saturday (Aug 15) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 11s period and expected on Sunday (Aug 16) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 15th Aug) | 11ft (3.5m) 9s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Hey, Rusty here. Lookin’ at the next 16 days along this stretch, and I gotta level with ya – it’s a rough patch. There’s just no decent surf on the cards. The winds are stuck onshore, the swell’s all wrong, and we’re looking at a blank run that’s pretty normal for this area when conditions line up like this. Forecasts can change, but for now, keep the wax in the wrapper.
Starting Wednesday 12 August, Kailua Beach is copping a 1.5m swell from the ENE, period a short 6 seconds, with a fresh 30 km/h ENE wind hammerin’ straight onshore. The combined energy is a weak 170, and it’s all poor surf. Thursday the 13th and Friday the 14th don’t get any better – wind picks up to 35 km/h, swell bumps to 2–2.2m, energy climbs to moderate 475–561, but it’s still onshore and ragged. The period stays short (6–8 seconds), so no power.
Saturday 15 August and Sunday 16 August get bigger, but not better. Swell hits 3–3.5m from the E with a 9-second period, combined energy rocketing to strong values of 1460 and 1912. But the wind is a strong breeze of 45–50 km/h, with cross-onshore near-gale on Sunday and a risk of thunderstorms. That’s expert-only size, and the wind is tearin’ the faces off – a total washout.
Through the second week, from Monday 17 August to Thursday 27 August, the swell drops from 1.7m down to 0.8–1.4m, but the wind stays locked ENE to E at 15–25 km/h, mostly onshore or cross-onshore. The period’s stuck at 6–7 seconds, and energy levels are weak to moderate (93–341). The wave reports all say the same: poor surf conditions, lumpy, choppy, messy.
Kailua Beach is a point break, but the swell’s coming from the wrong direction (optimum is NE), and the constant onshore wind kills any chance of a clean wave. Water temp is 27°C, about normal for the season, so at least it’s warm for a float.
No standouts here. No hidden gems. If you’re lookin’ for a paddle, you might find something waist-high on a low tide, but it’s not gonna be fun. Here’s hopin’ the next run of swell brings better luck.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Fri night. Warm (max 26°C on Wed night, min 25°C on Wed afternoon). Mainly strong winds. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Sun afternoon. Warm (max 26°C on Sat afternoon, min 25°C on Sat night). Winds decreasing (strong winds from the ENE on Sun morning, moderate winds from the ENE by Mon night). | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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 6 | ENE 6 | ENE 6 | ENE 6 | E 7 | ENE 8 | ENE 8 | ENE 8 | E 9 | E 9 | E 9 | E 9 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 165 | 188 | 195 | 219 | 411 | 469 | 555 | 828 | 1454 | 1851 | 1958 | 1898 | 1031 | 678 | 336 | 292 | 215 | 181 | 163 | 118 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 3:03PM0.92m | 2:34AM0.55m | 3:30PM0.88m | 3:21AM0.59m | 3:54PM0.82m | 4:08AM0.61m | 4:13PM0.75m | 4:57AM0.62m | 4:27PM0.68m | 5:52AM0.61m | 4:33PM0.62m | 7:01AM0.60m | 4:19PM0.57m | |||||||
Low Tide | 9:36PM0.27m | 8:33AM0.07m | 9:59PM0.24m | 9:13AM0.15m | 10:23PM0.21m | 9:51AM0.24m | 10:47PM0.20m | 10:29AM0.33m | 11:11PM0.19m | 11:08AM0.42m | 11:37PM0.19m | 11:57AM0.50m | 00:07AM0.20m | |||||||
 |  |  | | | | |  | |  | | | |  |  | |  | | | | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 7:02 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — |
mm | — | — | — | — | — | — | — | 3 | — | 1 | — | 2 | 5 | 4 | — | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 23 | 24 | 24 | 24 | 24 | 22 | 24 | 23 | 23 | 22 | 22 | 21 | 22 | 23 | 24 | 25 | 23 | 23 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | SSE 12 | SSE 10 | S 7 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 |
| kJ | 152 | 257 | 183 | 161 | 159 | 106 | 106 | 62 | 55 | 54 | 62 | 213 | 260 | 40 | 103 | 65 | 55 | 30 | 30 | 29 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | NW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | S 16 | S 14 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 9 |
| kJ | 55 | 2 | 7 | 6 | 5 | 6 | 6 | 6 | 6 | 6 | 8 | 7 | 46 | 63 | 8 | 8 | 5 | 5 | 5 | 8 |
Swell 3 Height (m) Direction Period (s) | NNW 7 | SE 9 | S 9 | S 9 | — | S 11 | SW 17 | S 17 | S 20 | S 19 | S 18 | NNW 8 | N 8 | S 16 | N 8 | N 7 | N 7 | SW 17 | SE 9 | SW 18 |
| kJ | 5 | 3 | 2 | 2 | — | 2 | 12 | 6 | 7 | 7 | 25 | 7 | 5 | 20 | 5 | 1 | 1 | 11 | 3 | 12 |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 6 | ENE 6 | ENE 6 | E 7 | ENE 8 | ENE 8 | ENE 8 | E 9 | E 9 | E 9 | E 9 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 165 | 188 | 195 | 219 | 411 | 469 | 555 | 828 | 1454 | 1851 | 1958 | 1898 | 1031 | 678 | 336 | 292 | 215 | 181 | 163 | 118 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 48 | 41 | 41 | 123 | 41 | 46 | 52 | 123 | 152 | 153 | 125 | 206 | 52 | 46 | 46 | 46 | 41 | 41 | 46 | 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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