Surf Forecasts:
Kailua Beach surf forecast from 5 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 11PM (local time) - 7ft (2.1m), 7s period, ENE swell with 397 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 2.1m 7s and forecast to arrive on Sunday (Aug 09) 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 Tuesday (Aug 11) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sun 9th Aug) | 7ft (2.1m) 7s |
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. I’ve got the guidance for Kailua Beach, and it’s a tough pill to swallow. The finder shows zero recommendations across the whole 16-day window. Every single session is flagged as poor surf conditions, so we’re looking at a blank run. The trade winds are pinned on from the ENE, blowing cross-on or onshore, and the swell is mixed up and chopped to bits. Nothing’s lining up for a decent paddle. Let’s walk through it.
The forecast kicks off with nothing on offer. Wednesday the 5th through to the end of the first week, we’ve got waist-high waves, around 4ft to 6ft, but the wind is a constant 18 to 19 mph from the ENE, making everything a lumpy, choppy mess. The swell period is short, between 5 and 7 seconds, so it’s all wind swell with no push. The combined energy is weak to moderate (readings between 95 and 355), but it doesn’t matter when the wind is trashing it. Kailua Beach is a point break, exposed to the NE, but the optimum swell direction is NE, so the direction is fine. The problem is the wind. Every morning and afternoon is cross-on or onshore, and the water temperature is about average for August, so no surprises there.
Moving into the second week, it gets bigger but not better. From Friday the 14th through to Wednesday the 20th, we’re seeing solid 7ft to 10ft surf. The swell period stretches to 8 or 9 seconds, which is a bit better, but the wind is still hammering us at 18 to 25 mph from the ENE. The combined energy jumps into the strong to very strong range (503 to 1405), but it’s all messy. For a point break, with that much onshore wind, it’s going to be a washing machine. At 10ft, that’s expert territory, and with the fresh breeze tearing it up, this setup looks more interesting for kite surfing than paddle surfing. No standouts here. The crowds are noted as “sometimes,” but with this quality, it’ll be quiet.
The gap of good surf is the entire 16 days. It’s a dry spell. Sometimes that’s just how it goes in this area. Forecasts can change, but for now, I’d leave the boards at home.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Thu morning. Warm (max 25°C on Wed morning, min 24°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun afternoon. Warm (max 26°C on Mon afternoon, min 25°C on Sat morning). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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 | ENE 9 | ENE 9 | ENE 6 | ENE 6 | ENE 8 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 312 | 203 | 238 | 104 | 69 | 128 | 50 | 66 | 131 | 165 | 181 | 326 | 366 | 376 | 362 | 284 | 261 | 293 | 215 | 219 | 219 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | on | on | on | cross-on | on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on |
High Tide | 8:35AM0.61m | 5:05PM0.58m | 10:38AM0.68m | 11:52AM0.77m | 12:41PM0.84m | 9:57PM0.40m | 1:22PM0.90m | 11:49PM0.42m | 1:59PM0.94m | 00:53AM0.47m | 2:32PM0.94m | 1:46AM0.51m | |||||||||
Low Tide | 1:20PM0.54m | 1:33AM0.15m | 2:46AM0.13m | 4:07AM0.10m | 8:55PM0.40m | 5:18AM0.06m | 8:36PM0.37m | 6:16AM0.03m | 8:52PM0.34m | 7:06AM0.01m | 9:13PM0.30m | ||||||||||
 | |  |  | | | | | | | | | |  |  | | |  |  | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — |
mm | — | — | — | 2 | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 26 | 25 | 26 | 27 | 25 | 25 | 24 | 24 | 25 | 24 | 23 | 23 | 24 | 24 | 24 | 25 | 27 | 25 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NNE 8 | S 12 | NNW 8 | ENE 8 | NNW 7 | ENE 7 | NNW 7 | NE 11 | NE 10 | NE 10 | SSW 13 | SSW 13 | N 11 | NNW 10 | NNW 9 | NNW 8 | SSW 15 | SSW 15 | SSW 14 | S 20 |
| kJ | 8 | 7 | 11 | 13 | 42 | 10 | 21 | 9 | 41 | 37 | 34 | 17 | 17 | 9 | 19 | 16 | 14 | 45 | 42 | 41 | 119 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 12 | NNE 8 | S 12 | NNW 8 | ENE 10 | NE 10 | NE 12 | N 7 | N 6 | N 6 | SSW 18 | S 18 | S 18 | S 16 | SSW 16 | SSW 15 | NNW 8 | NNW 8 | NNW 8 | SSW 14 |
| kJ | 13 | 12 | 6 | 10 | 12 | 11 | 14 | 23 | 8 | 3 | 3 | 30 | 24 | 24 | 20 | 50 | 45 | 13 | 11 | 6 | 61 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SSW 11 | S 11 | NNE 8 | S 11 | S 11 | NNW 7 | S 11 | S 11 | SSW 14 | SSW 14 | S 10 | S 10 | SSW 12 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | NNW 7 |
| kJ | 11 | 11 | 9 | 6 | 10 | 10 | 10 | 9 | 9 | 20 | 19 | 8 | 8 | 15 | 9 | 9 | 9 | 8 | 8 | 8 | 5 |
Wind waves Height (m) Direction Period (s) | ENE 10 | ENE 9 | ENE 9 | ENE 6 | ENE 6 | ENE 8 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 312 | 203 | 238 | 104 | 69 | 128 | 50 | 66 | 131 | 165 | 181 | 326 | 366 | 376 | 362 | 284 | 261 | 293 | 215 | 219 | 219 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 17 | 17 | 18 | 17 | 41 | 18 | 41 | 46 | 46 | 41 | 41 | 43 | 41 | 41 | 41 | 41 | 41 | 46 |
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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