Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 1 am 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
26.9°C
0.0° 

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 3 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 5PM (local time) - 4.5ft (1.3m), 9s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 8AM (local time) - 8ft (2.5m), 13s period, E swell with 2,252 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 5PM (local time) - 4.5ft (1.3m), 9s 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 5PM. The primary swell is predicted to be 1.3m and 9s 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 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 3.5m 12s period and expected on Monday (Sep 07) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 8th Sep)4.5ft (1.3m) 9s
Best Surf 5PM (Tue 8th Sep)4.5ft (1.3m) 9s
Most Powerful 8AM (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 again, switching to feet and miles for you. Let’s break down Kailua Beach.

It’s a tough start. We’re looking at a solid week of blown-out junk before we finally get a clean window. The first real chance isn’t until Tuesday the 8th, and even then, it’s a marginal call.

From Thursday the 3rd through Monday the 7th, it’s all poor surf. The wind is hammering from the ENE at 20-22 mph, making everything lumpy and ugly. The swell is there, but it’s trash. Monday the 7th sees a big spike in energy, with a combined swell energy of 2560, but with a cross-onshore wind and 10-foot stormy swell, that’s for experts only, and it’s messy. That’s more of a kite-surfing day than a paddling one.

We get a break on Tuesday the 8th. The wind swings to a light SSW cross-offshore at 9 mph in the afternoon, cleaning things up. The waves are small, around 4 feet, but the clean conditions are a relief. Combined energy is a modest 364, so it’s gentle, but it’s rideable.

Then we get the real standout. Wednesday morning, the 9th of September. That’s the one to mark. The wind drops to nothing – glassy, at 3 mph from the NNE. The swell is only 2 feet, but it’s pure, long-period groundswell from the east with a period of 14 seconds. The combined energy is 467, and with the glassy conditions, Kailua Beach will be offering up some clean, fun little waves. The water temp is about average for the time of year. This is the best on offer, but it’s a short window, as the wind kicks back onshore by the afternoon.

After that, it’s back to the grind. From Thursday the 10th onward, the wind turns onshore again, and the surf quality drops. The swell gets bigger, with some serious energy pumping in around the 14th and 15th (combined energy hitting 2935 and 4855), but it’s all blown out. Those 15-foot waves on the 15th are huge and dangerous, with a fresh onshore wind. For the rest of the 16-day outlook, it’s the same story: waves, but bad conditions. The long-range stuff is too uncertain to get excited about.

So, the takeaway: if you want a clean wave, you’ve got to wait for that glassy Wednesday morning. Otherwise, it’s a long, frustrating wait for the onshore wind to ease up.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sat afternoon. Warm (max 26°C on Sat afternoon, min 25°C on Thu morning). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 37mm), heaviest during Sun afternoon. Warm (max 28°C on Tue morning, min 24°C on Sun night). Winds decreasing (near gales from the SSE on Mon night, calm by Tue night).

Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
2
0
0
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
7
2.1
ENE
7
2
ENE
7
1
E
14
1.1
E
14
2.3
ENE
14
1.4
E
13
2.2
ENE
13
2.4
ENE
13
2.4
ENE
12
2.4
ENE
12
2.4
ENE
12
3
E
7
3
ESE
8
1.9
ENE
12
1.5
ENE
11
1.3
ENE
9
0.7
E
14
0.7
E
14
1.3
ENE
8
1.4
ENE
7
Wave Graph
Metric surfscale
Energy kJ
440
456
392
392
485
2012
690
1679
1930
1703
1676
1676
856
1008
966
511
272
195
184
196
193
Wind (km/h)
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
25
ENE
20
E
20
E
30
ENE
30
E
40
SE
45
S
25
S
15
S
5
SSE
20
E
25
ENE
30
ENE
Wind State
on
cross-on
on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
on
High Tide
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
1:55PM0.86m
1:52AM0.61m
Low Tide
00:39AM0.15m
2:15AM0.17m
4:01AM0.16m
7:47PM0.35m
5:17AM0.13m
7:50PM0.31m
6:14AM0.11m
8:04PM0.27m
7:02AM0.11m
8:22PM0.23m
part cloud
part cloud
clear
clear
clear
clear
part cloud
rain showers
rain showers
thunderstorm
thunderstorm
heavy rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
thunderstorm
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:15
6:15
6:15
6:15
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:44
6:43
6:42
6:40
6:39
6:38
 mm
2
2
3
8
12
2
3
8
1
2
Temp °C
25
25
25
25
25
25
25
26
26
26
26
25
26
27
27
28
28
27
26
26
26
Feels °C
23
22
21
21
21
21
23
25
27
27
27
24
25
26
23
29
30
30
29
27
25
  • Map Icons:
  • Break
  • 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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