
Surf Forecasts:
Kailua Beach surf forecast from 12 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 5PM (local time) - 7ft (2.1m), 10s period, ENE swell with 772 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 10s and forecast to arrive on Thursday (Sep 17) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 18s period and expected on Wednesday (Sep 16) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Thu 17th Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright, grab your coffee and come over here. It's been a rough stretch for us at Kailua Beach, I gotta be straight with you. This 16-day window is looking flat and frustrating, with hardly a moment worth paddling out. We’re stuck in a loop of onshore and cross-onshore ENE winds, and that combo is just trashing any chance of clean waves.
The water is sitting around 81°, which is bang on average for this time of year – so at least you won’t be freezing while you’re getting disappointed.
The outlook starts now, on Saturday the 12th, but don’t get excited. The first real sniff of anything different doesn't show up until Wednesday the 23rd, and even that is a long shot. We’re talking about a solid 10-day stretch of junk. From Saturday the 12th right through to Tuesday the 22nd, it’s all poor surf conditions, with wave energy ranging from weak to moderate (between 100 and 736). The swell is tiny, mostly around 3ft to 5ft, but coming from the ENE and NE with short, weak periods between 5 and 10 seconds. The wind is a constant problem – it’s onshore or cross-onshore, 9 to 19 mph, making everything choppy and lumpy. Honestly, it’s a kite surfer’s dream, but for us paddle surfers? It’s a write-off.
Then on Wednesday the 23rd, we finally see a pulse of energy. The combined energy jumps to a strong 1004, and the swell picks up to 7ft from the east, with a 10-second period. The morning gets a score of 2 out of 10 – which is better than the zeros we’ve been seeing – but it’s still labeled as marginal due to questionable tide conditions. The wind eases to a gentle 9 mph from the ENE, but it's still cross-onshore, so expect it to be fairly choppy. This one is a maybe, but I wouldn't call it a standout by any stretch.
The rest of that week and into the next is more of the same: moderate to fresh cross-onshore winds and poor conditions. By the time we get to Sunday the 27th, the swell direction swings to the north with a longer 11-second period, and the energy is still strong (546-652), but the wind is a fresh 19 mph from the ENE again, ruining any chance of quality.
I’ll be honest with you, brother. There’s no standout session in this forecast. The only day that even flickers with potential is the morning of Wednesday the 23rd, but it’s a gamble with the tide and the wind. For the rest of it, leave the boards in the car and save your energy. It won’t stay poor forever, but this run is a solid dud. The October swells can’t get here soon enough.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sat afternoon, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Warm (max 26°C on Tue morning, min 25°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 | NNE 9 | NNE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NNE 8 | E 12 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | E 8 |
Wave Graph | |||||||||||||||||||||
128 | 115 | 135 | 138 | 112 | 123 | 82 | 69 | 53 | 48 | 44 | 77 | 143 | 203 | 277 | 469 | 772 | 690 | 516 | 432 | 349 | |
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 | cross-on | on | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:01PM0.71m | 3:52AM0.73m | 3:16PM0.65m | 4:32AM0.72m | 3:26PM0.60m | 5:15AM0.70m | 3:27PM0.55m | 6:09AM0.67m | 3:00PM0.53m | 7:35AM0.64m | 9:58AM0.64m | ||||||||||
Low Tide | 9:06AM0.25m | 9:22PM0.14m | 9:44AM0.32m | 9:43PM0.13m | 10:23AM0.39m | 10:04PM0.13m | 11:06AM0.45m | 10:26PM0.15m | 12:06PM0.50m | 10:52PM0.18m | 11:26PM0.21m | 00:33AM0.25m | |||||||||
6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
— | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | 2 | — | — |
Temp °C | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | NE 9 | NNE 9 | NNE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NNE 8 | NNE 8 | NNE 8 | SW 18 | E 10 | E 10 | SSW 16 | SSW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 |
128 | 115 | 135 | 138 | 112 | 123 | 82 | 69 | 53 | 39 | 39 | 37 | 80 | 48 | 47 | 25 | 25 | 124 | 116 | 108 | 49 | |
Swell 2 Height (m) Direction Period (s) | NNE 9 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | SSW 14 | SW 14 | SSW 22 | E 13 | E 12 | E 12 | E 11 | N 10 | SW 18 | SW 17 | SSW 19 | SSW 19 | S 10 | NW 11 | NW 10 | SSW 16 |
94 | 98 | 46 | 26 | 25 | 20 | 8 | 45 | 14 | 26 | 44 | 37 | 7 | 79 | 76 | 37 | 36 | 2 | 5 | 4 | 26 | |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SW 16 | SSW 13 | SSW 15 | SW 15 | NW 12 | SE 8 | SW 14 | NNE 10 | SW 20 | SSW 20 | SW 19 | SW 12 | S 12 | S 11 | S 11 | S 10 | W 9 | S 10 | SE 9 | NW 9 |
24 | 10 | 17 | 21 | 8 | 6 | 2 | 8 | 10 | 61 | 37 | 95 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | E 4 | E 5 | E 4 | ENE 4 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | E 8 |
— | — | 8 | 23 | 13 | 13 | 44 | 31 | 27 | 48 | 39 | 77 | 143 | 203 | 277 | 469 | 772 | 690 | 516 | 432 | 349 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 17 | 18 | 41 | 17 | 17 | 41 | 17 | 17 | 17 | 17 | 41 | 46 | 48 | 41 | 48 | 52 | 41 | 42 | 41 | 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.










