Surf Forecasts:
Kailua Beach surf forecast from 29 Jul 2026:
- Most powerful swell: Saturday 1 Aug, 8PM (local time) - 8ft (2.5m), 8s period, ENE swell with 979 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 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 0.4m 15s period and expected on Wednesday (Jul 29) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sat 1st Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright, Rusty here again, giving you the same outlook in feet and miles.
Look, I gotta be upfront—this Kailua Beach (Oahu) forecast is a rough one. Water temp is a comfortable 80°, right around average for this time of year, but the surf is mostly a no-show. We’re staring down a long, ugly stretch.
Your first real shot is Wednesday, July 29th. There’s a 7 ft swell from the ENE with a 10-second period, giving us moderate energy (733). Wind is light cross-on from the north at 6 mph, so it’s not totally wrecked. But the conditions are only marginal, and the tide might mess with it. No standouts here, just a hopeful paddle.
Then it’s a total lockout. From Thursday, July 30th, all the way through Thursday, August 13th, it’s a mess. The wind cranks up from the east and ENE, mostly 15 to 25 mph, making everything choppy and lumpy. Swell hangs between 4 ft and 8 ft, but the period is short (6 to 8 seconds), and the wind is nearly always cross-onshore or onshore. Wave quality is poor. The biggest energy spike hits 1098 on Saturday, August 1st, but with strong winds and messy conditions, this is really a kite-surfing setup, not for paddle boards.
There’s one sliver of hope: Tuesday, August 4th. The wind drops to a light onshore from the NE at 6 mph, and the swell is 5 ft from the ENE with a long 12-second period. That gives us 671 units of moderate energy, and longer period means better-shaped waves. It’s still just marginal, but with those light winds, it’s your best bet in the entire 16 days.
After that, the wind and weather turn gnarly again through the end. So, to sum it up: if you’re set on Kailua Beach, try the morning of Wednesday, July 29th, or possibly Tuesday, August 4th. Otherwise, you’re looking at a 10-day stretch of horrible conditions. It’s a normal quiet spell for this area, but it still stings.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 27°C on Wed afternoon, min 24°C on Fri night). Winds increasing (light winds from the NE on Wed afternoon, strong winds from the ENE by Fri night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sat morning, min 24°C on Sat night). Winds decreasing (strong winds from the ENE on Sat morning, light winds from the ENE by Mon night). | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 10 | NE 9 | E 8 | ENE 8 | ENE 7 | E 7 | E 8 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 12 | ENE 11 | ENE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 733 | 470 | 309 | 310 | 220 | 320 | 451 | 478 | 756 | 787 | 893 | 932 | 737 | 642 | 492 | 394 | 353 | 320 | 671 | 582 | 425 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | on | on | cross-on |
High Tide | 3:22PM0.87m | 2:24AM0.50m | 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 | ||||||||
Low Tide | 9:59PM0.33m | 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 | ||||||||
 |  |  | | |  | | |  | | | | | | | | |  |  | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — |
 | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — |
mm | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 27 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 |
Feels °C | 27 | 30 | 29 | 27 | 27 | 26 | 25 | 23 | 22 | 21 | 21 | 22 | 22 | 22 | 22 | 24 | 24 | 24 | 27 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | NE 9 | ENE 8 | SSW 13 | S 13 | E 16 | E 15 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | E 12 | ENE 12 | N 10 | ENE 10 |
| kJ | 733 | 470 | 212 | 60 | 55 | 81 | 159 | 231 | 205 | 205 | 196 | 194 | 180 | 191 | 121 | 85 | 108 | 187 | 671 | 8 | 425 |
Swell 2 Height (m) Direction Period (s) | S 15 | S 14 | NNE 7 | SW 18 | N 9 | S 13 | N 8 | N 8 | N 8 | SSW 14 | SSW 14 | N 10 | N 9 | N 9 | N 8 | N 8 | SSE 13 | SSW 12 | SSW 12 | SSW 11 | N 9 |
| kJ | 67 | 65 | 65 | 12 | 15 | 53 | 13 | 12 | 11 | 19 | 18 | 17 | 26 | 14 | 12 | 5 | 17 | 14 | 14 | 13 | 6 |
Swell 3 Height (m) Direction Period (s) | — | S 13 | S 14 | E 19 | E 18 | N 9 | S 12 | S 12 | S 12 | S 11 | N 11 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | SSW 12 | S 13 | S 14 | S 14 | S 13 |
| kJ | — | 4 | 62 | 29 | 24 | 14 | 27 | 26 | 11 | 10 | 9 | 20 | 19 | 17 | 17 | 3 | 15 | 3 | 16 | 16 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | E 8 | ENE 8 | ENE 7 | E 7 | E 8 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | — | ENE 11 | ENE 5 |
| kJ | — | — | 309 | 310 | 220 | 320 | 451 | 478 | 756 | 787 | 893 | 932 | 737 | 642 | 492 | 394 | 353 | 320 | — | 582 | 62 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 16 | 16 | 41 | 41 | 41 | 46 | 51 | 123 | 144 | 153 | 48 | 48 | 50 | 46 | 17 | 42 | 17 | 16 | 16 | 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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