Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 1 am 05 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 5 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: Saturday 5 Sep, 11AM (local time) - 7ft (2.2m), 14s period, ENE swell with 1,705 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 2.2m 14s and forecast to arrive on Saturday (Sep 05) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 12s 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 (Sat 5th Sep)7ft (2.2m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s break down the next 16 days for Kailua Beach. I’m not gonna sugarcoat it – this is a tough stretch. Every single session in the forecast is marked as poor surf conditions. There’s no window of clean, rideable waves to get excited about.

The first day, Saturday the 5th, is a total loss. The wind is a stiff ENE breeze at 16 mph, blowing straight onshore, and it’s just wrecking a 7ft swell from the ENE. That’s a ton of energy (1725 combined energy), but it’s all messy and blown out. The water temp is a warm 81°, which is right on average for this time of year, so that’s not the issue.

Moving into Sunday the 6th and Monday the 7th, it’s more of the same story. The wind swings a bit more easterly, still cross-onshore, and the swell hangs around 5ft to 7ft, with a moderate period (12-13 seconds). The energy is still high, but the conditions are just too choppy and lumpy for a decent paddle. Those risk of thunderstorms on Monday don’t help the mood either.

Tuesday the 8th is the only day that even looks remotely possible. The wind shifts to a light SSE, giving us a clean, cross-off breeze. The swell drops to 6ft in the morning and 6ft in the afternoon from the ENE, with a period of 11 seconds. The energy is still moderate to strong (885 to 789), but the notes say it’s only marginal due to questionable tide. If you know the sandbar like the back of your hand, it might be a brief window, but it’s not worth planning around.

From Wednesday the 9th all the way through to Sunday the 20th, it’s a long, grim grind. The swell loses its period (7-8 seconds) and the wind just won’t let up – mostly onshore or cross-onshore from the ENE, blowing at 10 to 19 mph. The wave energy fades from moderate down to weak (around 170 to 615), but the quality never improves. Those short-period, wind-driven waves will make paddling out hard work.

So what’s the bottom line? There’s absolutely nothing for a surfer here. The constant onshore wind and poor surf quality means this is a total blank run. If you’re into kiting, maybe you look at the bigger energy days, but for a paddle surfer, save your energy. This is more normal for the area when the trade winds lock in like this. Forecasts can change, but for now, I’d leave the board in the garage.

Rusty.

Short Range Forecast

Heavy rain (total 29mm), heaviest during Sun night. Warm (max 27°C on Mon night, min 25°C on Sat morning). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Tue night. Warm (max 28°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
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
1
0
0
1
0
0
2
1
2
3
0
0
0
0
0
0
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)
2.2
ENE
14
2.2
ENE
13
2
ENE
13
1.9
ENE
12
2
ENE
12
2.1
E
12
1.5
E
13
2.2
ENE
12
2.1
ENE
12
1.9
ENE
11
1.7
ENE
11
1.4
ENE
9
1.2
ENE
8
1.3
ENE
8
1.2
ENE
8
1.6
ENE
7
1.5
ENE
7
1.7
ENE
7
1.5
ENE
7
1.4
ENE
7
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
1705
1679
1299
1118
1072
1290
724
1428
1141
885
649
334
197
196
151
258
212
262
236
214
301
Wind (km/h)
25
ENE
25
ENE
20
ENE
25
E
20
E
15
E
25
E
25
ESE
30
SSE
25
SSE
20
SSE
10
SSE
15
E
20
ENE
25
E
25
ENE
25
ENE
20
ENE
20
E
25
ENE
25
ENE
Wind State
on
on
cross-on
cross-on
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
High Tide
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
2:20PM0.82m
2:33AM0.67m
2:42PM0.77m
3:12AM0.71m
Low Tide
4:01AM0.16m
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
part cloud
rain showers
rain showers
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
thunderstorm
rain showers
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:15
6:15
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:42
6:40
6:39
6:38
6:37
6:37
 mm
1
2
1
16
5
3
1
1
2
2
Temp °C
26
26
26
26
26
25
26
26
27
27
28
27
26
27
26
26
25
25
25
26
25
Feels °C
26
26
26
26
26
26
26
26
27
27
29
30
29
29
27
25
24
23
26
25
24
  • 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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