Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 1 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
27.0°C
0.1° 

Kailua Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Kailua Beach surf forecast from 7 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 8PM (local time) - 5ft (1.6m), 10s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 11AM (local time) - 8ft (2.5m), 13s period, E swell with 2,056 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 8PM (local time) - 5ft (1.6m), 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 1.6m and 10s period. 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 13s and forecast to arrive on Monday (Sep 07) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 11s period and expected on Tuesday (Sep 08) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 8th Sep)5ft (1.6m) 10s
Best Surf 8PM (Tue 8th Sep)5ft (1.6m) 10s
Most Powerful11AM (Mon 7th Sep)8ft (2.5m) 13s

Table - best surf conditions forecast for Kailua Beach over the next 16 days.


The Lowdown

Alright, Rusty here. Let's talk about what's on the table for Kailua Beach.

It's a tough stretch of days ahead, I'm not gonna lie. Right now, the ocean is a messy, choppy beast. We've got a lot of cross-onshore wind and lumpy conditions making for nothing but poor surf. The first real chance to even paddle out with a smile is Tuesday, the 8th of September. The morning and afternoon will see a drop in the wind and cleaner conditions, but the swell is still a bit messy and the energy is moderate (around 915), so it's marginal at best. Not a standout, just a glimmer of hope.

We've got a long, long run of poor and marginal days after that. The wind stays onshore or cross-onshore, and the swell is small and weak. Honestly, from the 8th right through to the 19th of September, the surf quality is just not there. It's a real bummer.

But hold on. The end of the window is finally looking promising. The standout comes on Saturday the 19th of September. The morning is still light cross-onshore and average, but the afternoon is the one. The wind switches to a light S, and the ocean goes glassy. That's a major positive. We're looking at a clean, surfable 4 ft swell from the ENE, and the energy is picking up a little (177). It's not huge, but it's clean, and that's gold.

Then Sunday the 20th and Monday the 21st of September look even better for the early birds. The mornings are glassy, with a light wind from the ENE and ESE, and the swell holds steady at 4 ft from the E. The period stretches to 8-9 seconds, giving it a bit more shape. The energy is creeping up to around 241-285, which is nice. These are the best sessions on offer. But remember, this is a point break, and with that swell direction from the ENE, it's not the optimum for Kailua Beach. It'll be fun, but don't expect perfection.

The water temp is sitting at a nice 81°, which is totally normal for this time of year, so no wetsuit needed. Oh, and the crowds? Kailua is a popular spot, so expect some company when the conditions are good, especially on that glassy weekend.

So, to sum it up: the first two weeks are a write-off. If you're a kite surfer, the strong onshore winds might be your thing, but for paddle surfing, it's a no-go. Your best bet is to wait for the glassy conditions on the 19th and 20th of September. The afternoon of the 19th and the mornings of the 20th and 21st are the standouts. Don't hold your breath for anything before that.

Stay salty, Rusty.

Short Range Forecast

Heavy rain (total 35mm), heaviest during Sun night. Warm (max 28°C on Tue morning, min 24°C on Sun night). Winds decreasing (strong winds from the SSE on Mon night, calm by Tue night).

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Wed night. Warm (max 27°C on Wed afternoon, min 24°C on Fri night). Wind will be generally light.

Sun
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
0
1
1
2
3
0
0
0
0
0
0
0
0
0
0
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
ENE
12
2.2
ENE
12
2.5
E
13
1.5
E
12
2.3
E
12
1.9
ENE
11
1.7
ENE
11
1.5
ENE
10
1.2
ENE
9
1.4
ENE
8
1.6
ENE
7
1.7
ENE
7
1.5
ENE
7
1.3
ENE
7
1.4
ENE
7
1.2
ENE
11
1.4
ENE
11
1.1
E
10
1
E
10
0.9
ENE
10
Wave Graph
Metric surfscale
Energy kJ
1072
1338
2056
683
1488
901
638
411
217
238
261
286
229
173
197
363
452
245
200
157
Wind (km/h)
25
ENE
20
E
35
E
30
ESE
40
SSE
35
S
20
SSW
5
S
10
E
15
E
20
E
30
E
20
ENE
25
ENE
20
ENE
20
ENE
15
ENE
10
E
10
E
15
ESE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
High Tide
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
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
clear
clear
clear
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
clear
rain showers
rain showers
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:40
6:39
6:38
6:37
6:37
6:37
 mm
1
17
4
3
8
2
1
2
1
Temp °C
26
25
26
26
27
28
28
27
27
27
26
25
25
25
25
26
25
26
26
26
Feels °C
27
24
25
25
26
27
27
30
30
29
28
24
25
24
24
25
24
28
28
27
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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