Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 1 pm 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
26.9°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 1 Sep 2026:

  • Most powerful swell: Saturday 5 Sep, 2PM (local time) - 8ft (2.4m), 13s period, ENE swell with 1,945 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 2.4m 13s and forecast to arrive on Saturday (Sep 05) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 12s period and expected on Friday (Sep 04) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Sat 5th Sep)8ft (2.4m) 13s

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


The Lowdown

Alright, Rusty here, let's get into it.

Lookin' at the 16-day window for Kailua Beach, and honestly, it is a tough stretch. The forecast is plastered with onshore and cross-onshore ENE winds that just wreck the surface. For the first nine or ten days, it's a write-off. We see howling winds and messy conditions with poor surf ratings across the board. There is a big run of energy mid-period, with combined swell energy hitting 1950 (strong) on Saturday, September 5th, but it’s all blowing out with that wind. It’s a real bummer.

The water temp is sitting at 80°F, which is bang on average for this time of year, nothing unusual there.

The only glimmer in this whole outlook comes on Tuesday, September 8th. Afternoon kicks in with a glassy surface, light ESE breeze at just 3 mph. That’s what you’ve been waiting for. The swell is small, around 5ft from the E with a short, unexciting period of 6 seconds, so not much power behind it (combined energy of 411 – moderate). But the glassy conditions mean at least you’ll get a clean, rideable wave. For the sheer lack of anything else, that's your standout window. However, mixed with the short period and small size, the quality is marginal.

After that brief reprieve, it’s right back into the onshore chop. The whole second week from the 9th onward looks pretty grim again with persistent cross-onshore winds and steadily dropping swell heights, fading down to under 3ft by the 13th.

So, if you’re set on getting wet, keep your eyes locked on that afternoon window on September 8th. Otherwise, it’s a long stretch of blown-out conditions ahead.

Keep it salty,
Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Tue night. Warm (max 26°C on Mon afternoon, min 25°C on Mon afternoon). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 7mm), mostly falling on Sun morning. Warm (max 26°C on Sat morning, min 25°C on Thu afternoon). Winds decreasing (strong winds from the ENE on Fri morning, moderate winds from the E by Sat night).

Mon
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
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)
1.9
ENE
8
2
ENE
8
1.9
ENE
8
2.1
ENE
8
2.1
ENE
8
2.1
ENE
8
2.1
ENE
8
2.5
ENE
8
2.4
ENE
7
2.3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.1
ENE
7
2.2
ENE
13
2.4
ENE
13
2.3
ENE
13
2.3
ENE
13
2.3
ENE
13
2.2
ENE
13
2.2
ENE
12
Wave Graph
Metric surfscale
Energy kJ
419
459
421
493
527
494
522
681
595
574
785
693
482
1630
1930
1766
1723
1723
1451
1369
Wind (km/h)
35
ENE
30
ENE
30
NE
30
ENE
30
ENE
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
40
ENE
40
ENE
35
ENE
30
ENE
25
ENE
25
ENE
20
E
25
ENE
30
ENE
25
ENE
Wind State
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
on
on
cross-on
cross-on
on
on
High Tide
3:51PM0.67m
5:22AM0.68m
4:02PM0.61m
6:31AM0.67m
3:59PM0.56m
8:17AM0.68m
10:21AM0.72m
11:33AM0.78m
12:19PM0.83m
11:14PM0.40m
Low Tide
10:30PM0.13m
10:57AM0.42m
11:01PM0.13m
12:04PM0.50m
11:40PM0.13m
00:39AM0.15m
2:15AM0.17m
4:01AM0.16m
7:47PM0.35m
clear
part cloud
clear
part cloud
rain showers
rain showers
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
rain showers
thunderstorm
thunderstorm
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:15
6:15
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:46
6:45
6:45
6:44
6:43
6:42
 mm
1
1
1
3
3
2
Temp °C
26
26
25
26
25
26
26
26
25
25
25
25
25
25
26
26
26
26
26
26
Feels °C
24
24
22
25
23
24
24
24
22
21
21
21
21
21
26
26
26
26
26
26
  • 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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