Surf Forecasts:
Kailua Beach surf forecast from 31 Jul 2026:
- Most powerful swell: Sunday 2 Aug, 2AM (local time) - 8ft (2.5m), 8s period, ENE swell with 908 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 Sunday (Aug 02) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 14s period and expected on Saturday (Aug 01) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 2nd Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – the next couple of weeks are looking pretty grim for Kailua Beach. We've got a solid run of poor surf conditions stretching all the way through, with no real standout windows to get excited about.
Right now, the water temp is sitting at a warm 80°, which is pretty much normal for this time of year. But the problem is the wind. We're looking at a persistent ENE breeze, mostly in the fresh 22 mph range, that's going to keep things lumpy and cross-onshore. The swell is showing up, around 6ft to 8ft from the E and ENE, but with that short period of 7 to 8 seconds, it's just not going to have any shape. The combined energy peaks at a strong 1051 on Saturday the 1st of August, but it's all wind-affected junk. Honestly, for the first week, this setup looks more interesting for kite surfing than paddle surfing.
We do get a small window of hope around the 4th and 5th of August. The wind drops to a gentle 9 mph, and the swell period stretches out to 11 seconds, which is a proper groundswell. The wave height drops to 5ft, but the combined energy is still a moderate 329. The problem is, the wind is still onshore or cross-onshore, so it's only going to be "fairly choppy" at best. It's a tease, not a real winner.
After that, it's back to the same story. The wind stays up, the swell stays short and choppy, and the scores are all zeros. There's a brief moment on the 15th of August where the swell direction swings to the NNW with a very long 13-second period, but the height is only 1ft, and the wind is a fresh 19 mph cross-onshore. It's a ghost swell.
So, I'm sorry, but there's nothing to recommend here. No standout sessions, no hidden gems. The whole 16-day window is a washout. The forecasts can change, but for now, leave the boards at home, or maybe take up golf. This is Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 26°C on Fri morning, min 24°C on Sun night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Mon night. Warm (max 26°C on Wed morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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) | E 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 6 | ENE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 352 | 439 | 838 | 836 | 824 | 908 | 740 | 705 | 569 | 412 | 379 | 370 | 582 | 496 | 380 | 321 | 218 | 185 | 192 | 89 | 188 |
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 | on | on | on | on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 10:38AM0.68m | |||||||||
Low Tide | 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 | 2:46AM0.13m | ||||||||
 | |  | |  |  | | |  | | | |  | | | | |  | |  |  | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | 1 | 1 | — | — | — | — | 1 | — | — | 1 |
Temp °C | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 24 | 22 | 21 | 21 | 22 | 22 | 22 | 22 | 24 | 24 | 24 | 26 | 26 | 25 | 27 | 27 | 26 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | 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 11 | ENE 11 | ENE 10 | NNE 9 | NNE 8 | S 12 | S 12 | NE 8 | NNW 7 |
| kJ | 157 | 231 | 205 | 205 | 196 | 253 | 138 | 134 | 87 | 82 | 76 | 139 | 582 | 496 | 380 | 8 | 7 | 11 | 11 | 30 | 10 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | N 7 | SSW 14 | N 10 | N 9 | N 9 | N 8 | N 8 | N 7 | S 12 | SSW 12 | S 14 | S 13 | S 13 | S 12 | NNE 8 | N 8 | NNW 8 | S 11 |
| kJ | 23 | 12 | 11 | 10 | 18 | 17 | 26 | 14 | 6 | 10 | 4 | 11 | 14 | 15 | 14 | 13 | 12 | 6 | 5 | 6 | 10 |
Swell 3 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | SSW 14 | S 11 | SSW 14 | SSW 14 | SW 13 | S 13 | S 13 | SSE 13 | S 13 | SSE 12 | SSW 11 | NNE 9 | SSW 11 | S 11 | S 11 | NW 8 | S 11 | NE 11 |
| kJ | 27 | 26 | 11 | 19 | 9 | 20 | 19 | 7 | 13 | 13 | 17 | 3 | 15 | 13 | 8 | 11 | 9 | 9 | 3 | 10 | 5 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 6 | ENE 6 |
| kJ | 352 | 439 | 838 | 836 | 824 | 908 | 740 | 705 | 569 | 412 | 379 | 370 | — | — | — | 321 | 218 | 185 | 192 | 89 | 188 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 51 | 125 | 144 | 125 | 125 | 125 | 152 | 42 | 18 | 42 | 17 | 17 | 16 | 17 | 17 | 18 | 17 | 41 | 41 | 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.
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