
Surf Forecasts:
Kailua Beach surf forecast from 3 Sep 2026:
- Most powerful swell: Monday 7 Sep, 8PM (local time) - 8ft (2.5m), 13s period, ENE swell with 2,008 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 13s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Tuesday (Sep 08) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Mon 7th Sep) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let’s be blunt: the next 16 days at Kailua Beach are a real heartbreaker for a surfer. The raw ingredients of swell are there, but the wind is utterly relentless, and it’s coming from the worst possible direction. This is a point break that’s exposed to the NE, and it’s getting hammered by a constant NE to E trade wind flow. That means nearly every session is cross-onshore, onshore, or just plain lumpy and choppy. The forecast is a long, frustrating stretch of poor surf conditions, with barely a window of hope.
We kick off right now, on Wednesday the 2nd. The morning has a 7ft ENE swell with a short, weak 8-second period, but it’s completely ruined by a 19 mph cross-onshore wind. The water is a warm 81°, which is about average for this time of year. The wave energy is moderate, sitting at 635, but it’s all just wind-blown mess. Poor surf is the only way to describe it.
This pattern locks in. Thursday the 3rd is more of the same: 7ft to 7ft ENE swell, but the wind picks up to 22 mph, straight onshore, with a period dropping to 7 seconds. The wave energy bumps up to 551, but it’s unsurfable. Friday the 4th gets a little interesting in the afternoon, with a 4ft E swell but a long 14-second period, pushing the energy to 886. The wind is still onshore though, so it’s just a pulsing, lumpy mess. Saturday the 5th morning sees the energy climb to 968 with a 4ft E swell at 14 seconds, but the wind is still 16 mph cross-onshore. This is a prime example of a long-period groundswell that would be epic at a reef or point, but here it’s just getting chopped up.
The real gut punch comes Saturday afternoon: a 7ft ENE swell at 13 seconds, with a combined energy of 1706—that’s strong wave energy. But the wind is onshore at 16 mph. For a point break, that’s a total write-off. Sunday the 6th through Monday the 7th keep the energy high (over 1000) but the wind stays onshore, making it all a frustrating exercise in watching from the beach.
Then, a tiny flicker of hope. On Tuesday the 8th, the wind swings to the SSE, blowing 28 mph in the morning and 22 mph in the afternoon. This is actually a cross-offshore wind for this break. The morning has a 7ft E swell (7 seconds) and the afternoon a 6ft ENE swell (11 seconds). The water is still clean. The score is a 1 out of 10, which is “marginal.” It’s not good, but it’s the only day in the entire 16-day window where the wind isn’t ruining everything. A 7ft wave at a point break is solid, but it’s a big one—over 8ft is expert-only, so this is on the edge of being too much for intermediates. The real issue is the swell direction is E, not the optimum NE. Still, if you’re desperate, this is the only shot.
The rest of the forecast is a slow, sad decline. From Wednesday the 9th to Thursday the 17th, the swell drops off, the energy falls to the 150-550 range, and the wind stays stubbornly cross-onshore from the ENE. There are a few days from the 12th to the 14th with light 6 mph winds, but they’re still cross-onshore, and the swell is small (3ft to 6ft) and short-period. The break is described as “fairly consistent,” which is true—there’s nearly always some swell—but it doesn’t matter when the wind is this bad.
Honestly, the only thing that stands out over the entire 16 days is that Tuesday the 8th. It’s the only day with clean, cross-offshore wind. But it’s a one-day wonder, and the swell direction isn’t ideal. If you’re a kite surfer, this entire period looks like a playground with that consistent cross-onshore wind and decent wave energy. For paddling? It’s a tough stretch. Keep your eyes on the forecasts, because it tends not to stay this poor for long. But for now, I’d say sit this one out.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Wed morning. Warm (max 26°C on Wed afternoon, min 25°C on Wed morning). Mainly strong winds. | Days 4-6 Weather SummaryHeavy rain (total 26mm), heaviest during Sun night. Warm (max 27°C on Mon night, min 24°C on Sun night). Winds increasing (light winds from the E on Mon morning, strong winds from the SE by Mon night). | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | E 14 | E 14 | E 13 | E 14 | ENE 13 | ENE 13 | ENE 12 | E 12 | ENE 12 | E 13 | ENE 13 | ENE 12 | E 7 | ENE 11 | NE 10 |
Wave Graph | |||||||||||||||||||||
602 | 549 | 542 | 417 | 444 | 443 | 428 | 478 | 507 | 622 | 1674 | 1467 | 1183 | 942 | 1072 | 1018 | 1144 | 901 | 507 | 685 | 220 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | cross-on | cross-on | on | on | on | cross-on | on | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-off | cross-off | cross-off |
High Tide | 3:59PM0.56m | 8:17AM0.68m | 10:21AM0.72m | 11:33AM0.78m | 12:19PM0.83m | 11:14PM0.40m | 12:55PM0.86m | 00:19AM0.47m | 1:27PM0.87m | 1:08AM0.54m | |||||||||||
Low Tide | 12:04PM0.50m | 11:40PM0.13m | 00:39AM0.15m | 2:15AM0.17m | 4:01AM0.16m | 7:47PM0.35m | 5:17AM0.13m | 7:50PM0.31m | 6:14AM0.11m | 8:04PM0.27m | |||||||||||
6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | |
— | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | |
mm | 2 | — | 1 | 2 | 1 | — | — | — | — | — | 2 | 2 | — | — | 5 | 5 | 6 | 6 | 4 | 3 | 4 |
Temp °C | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 24 | 24 | 27 | 27 | 28 | 27 |
Feels °C | 24 | 25 | 23 | 23 | 22 | 21 | 21 | 21 | 22 | 23 | 24 | 24 | 26 | 26 | 27 | 26 | 24 | 25 | 23 | 26 | 28 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | E 13 | E 13 | SSE 12 | E 14 | E 14 | E 14 | E 13 | E 14 | S 12 | SSW 12 | SSW 12 | E 12 | SSW 11 | E 13 | ENE 13 | ENE 12 | ENE 11 | ENE 11 | E 9 |
130 | 79 | 123 | 121 | 133 | 264 | 357 | 478 | 507 | 622 | 180 | 152 | 83 | 942 | 102 | 1018 | 1144 | 901 | 469 | 685 | 220 | |
Swell 2 Height (m) Direction Period (s) | E 14 | E 14 | S 15 | SSE 13 | E 12 | SSE 12 | SSE 12 | S 12 | S 13 | S 12 | NNE 10 | SSE 10 | SSE 10 | SSW 12 | SSW 18 | SW 12 | SW 14 | SW 14 | SW 16 | SW 14 | NE 10 |
33 | 66 | 68 | 109 | 107 | 155 | 107 | 137 | 206 | 172 | 32 | 19 | 19 | 115 | 110 | 72 | 153 | 248 | 773 | 532 | 217 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | S 11 | SSE 15 | S 14 | SSW 14 | NW 9 | S 13 | N 12 | NNE 11 | NNE 10 | SSW 18 | N 11 | SW 16 | SSE 10 | N 9 | N 7 | SSW 17 | S 10 | S 15 | E 14 | SSW 10 |
9 | 23 | 23 | 65 | 38 | 3 | 56 | 3 | 12 | 20 | 30 | 9 | 64 | 10 | 14 | 25 | 92 | 47 | 109 | 138 | 173 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 13 | ENE 13 | ENE 12 | NNE 6 | ENE 12 | ENE 5 | ENE 6 | ENE 6 | E 7 | SSE 7 | SSE 6 |
602 | 549 | 542 | 417 | 444 | 443 | 428 | 405 | 405 | 326 | 1674 | 1467 | 1183 | 45 | 1072 | 84 | 140 | 218 | 507 | 419 | 80 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 46 | 52 | 123 | 125 | 46 | 46 | 122 | 42 | 41 | 122 | 18 | 18 | 41 | 16 | 17 | 17 | 119 | 120 | 108 | 42 |
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.










