
Surf Forecasts:
Kailua Beach surf forecast from 6 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 8PM (local time) - 5.5ft (1.7m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 8AM (local time) - 8ft (2.5m), 12s period, ENE swell with 1,754 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 8PM (local time) - 5.5ft (1.7m), 10s period with ENE swell.
Best Forecast Surf Conditions for Kailua Beach this week:
The surf forecast for Kailua Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 08) at 8PM. The primary swell is predicted to be 1.7m and 10s period with a secondary swell of 0.6m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kailua Beach in the next 16 days are 2.5m 12s and forecast to arrive on Monday (Sep 07) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Tuesday (Sep 08) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 8th Sep) | 5.5ft (1.7m) 10s |
| Best Surf | 8PM (Tue 8th Sep) | 5.5ft (1.7m) 10s |
| Most Powerful | 8AM (Mon 7th Sep) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ for the next couple of weeks.
Right off the bat, I gotta be honest with ya – we’re looking at a pretty rough run. The forecast starts with a bit of energy but the conditions are just not playing ball. The first swell we see comes in on Sunday, September 6th, with a 7 ft swell from the ENE, but that 12 mph easterly wind is smashing it sideways, making it a choppy, poor surf session. The combined energy is moderate (1266), but it’s just not worth paddling out for. That same pattern holds through Monday and Tuesday – the wind stays strong, mostly cross-onshore or onshore, and the waves stay messy.
Now, there is a glimmer of hope on Tuesday, September 8th. The wind shifts to a light S-SSE cross-offshore breeze, cleaning things up. The swell drops to 6 ft on the morning and 6 ft in the afternoon, both from the ENE with an 11-second period. The combined energy is still moderate (869 and 820), and the water temp is a pleasant 81°, which is normal for this time of year. This is the best we’ve got, and it’s still only a "marginal" call. The break is Kailua Beach, a point break that’s fairly consistent. It’s exposed to the NE, and the swell is coming from the ENE, which is close to the optimum direction. The wind is a major positive here – that cross-offshore breeze will make for clean, lined-up waves. But don’t expect a crowd-free session; it gets busy here sometimes.
After that, it’s a long, dry spell. From Wednesday, September 9th, all the way through to the end of the forecast on Monday, September 21st, every single session is rated "poor surf conditions." The winds go back to being onshore or cross-onshore, mostly from the ENE, and the swell period drops to a short, weak 6-8 seconds. The combined energy drops to the low hundreds, which is weak. There’s a little bit of size again from September 17th onwards, with 7 ft to 7 ft swell from the E and ENE, but with 12-19 mph onshore winds, it’s just a messy, blown-out wall of whitewater. For a beach-and-reef setup like this, with that much wind and size, it’s honestly looking more interesting for the kite surfers than the paddle crew.
So, to sum it up: your one real window is Tuesday, September 8th. Get out there early for the cleanest conditions. After that, we’re in for a solid 13-day stretch of nothing but poor surf. It’s a bummer, but sometimes the ocean just takes a nap.
Catch ya next time.
Rusty.
Short Range ForecastHeavy rain (total 33mm), heaviest during Sun night. Warm (max 28°C on Tue morning, min 25°C on Sun night). Winds decreasing (fresh winds from the ESE on Mon afternoon, light winds from the S by Tue night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu morning. Warm (max 27°C on Wed morning, min 25°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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 12 | ENE 12 | E 12 | E 7 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | E 13 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 10 | ENE 10 | ENE 6 |
Wave Graph | |||||||||||||||||||||
1261 | 1072 | 657 | 654 | 1590 | 1047 | 869 | 672 | 394 | 173 | 232 | 172 | 225 | 181 | 191 | 196 | 256 | 193 | 411 | 430 | 211 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | on | on | cross-on |
High Tide | 12:19PM0.83m | 11:14PM0.40m | 12:55PM0.86m | 00:19AM0.47m | 1:27PM0.87m | 1:08AM0.54m | 1:55PM0.86m | 1:52AM0.61m | 2:20PM0.82m | 2:33AM0.67m | 2:42PM0.77m | 3:12AM0.71m | 3:01PM0.71m | 3:52AM0.73m | |||||||
Low Tide | 7:47PM0.35m | 5:17AM0.13m | 7:50PM0.31m | 6:14AM0.11m | 8:04PM0.27m | 7:02AM0.11m | 8:22PM0.23m | 7:46AM0.14m | 8:42PM0.19m | 8:26AM0.19m | 9:02PM0.16m | 9:06AM0.25m | 9:22PM0.14m | ||||||||
6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | 3 | 15 | 5 | 4 | 4 | 1 | — | 1 | — | 1 | — | 2 | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 26 | 26 | 25 | 25 | 26 | 26 | 29 | 29 | 30 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 24 | 24 | 25 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | S 12 | SSW 12 | E 12 | SW 14 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 8 | E 13 | E 13 | E 12 | E 12 | E 11 | ENE 12 | SSW 15 | ENE 11 | SSW 16 | SW 16 | SSW 13 |
72 | 85 | 657 | 158 | 1590 | 1047 | 869 | 672 | 394 | 173 | 166 | 156 | 104 | 103 | 94 | 142 | 23 | 121 | 24 | 10 | 17 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | E 16 | SSW 14 | SSE 8 | SW 14 | SW 13 | SSW 15 | E 14 | E 14 | E 13 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | SSW 16 | S 12 | SW 17 | S 11 | SW 13 | SW 16 |
50 | 78 | 136 | 21 | 162 | 242 | 75 | 148 | 134 | 168 | 68 | 60 | 29 | 20 | 11 | 26 | 11 | 12 | 2 | 7 | 10 | |
Swell 3 Height (m) Direction Period (s) | N 8 | SSW 19 | SSW 18 | SSW 16 | S 9 | S 15 | WSW 11 | SSW 15 | S 8 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 12 | NW 8 | SW 15 | S 8 | S 11 | NW 15 |
5 | 35 | 65 | 91 | 54 | 118 | 23 | 72 | 32 | 65 | 36 | 34 | 33 | 32 | 26 | 14 | 2 | 8 | 1 | 2 | 8 | |
Wind waves Height (m) Direction Period (s) | ENE 12 | ENE 12 | ENE 7 | E 7 | — | SSE 8 | S 9 | S 8 | — | — | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 10 | ENE 10 | ENE 6 |
1261 | 1072 | 247 | 654 | — | 133 | 173 | 91 | — | — | 232 | 172 | 225 | 181 | 191 | 196 | 256 | 193 | 411 | 430 | 211 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 41 | 41 | 20 | 126 | 54 | 72 | 16 | 11 | 0 | 11 | 17 | 17 | 17 | 17 | 17 | 18 | 41 | 41 | 18 | 41 | 41 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










