Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 7 pm 08 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
26.1° 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 9 Jul 2026:

  • Most powerful swell: Thursday 9 Jul, 2AM (local time) - 8ft (2.5m), 8s period, ENE swell with 725 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 2.5m 8s and forecast to arrive on Thursday (Jul 09) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 16s period and expected on Sunday (Jul 12) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Thu 9th Jul)8ft (2.5m) 8s

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


Alright, Rusty here. Let’s be straight about Kailua Beach. I’ve looked at the next 16 days, and it’s a tough stretch. The forecast is a long run of onshore or cross-onshore winds, mostly from the ENE, and the swell is coming from the same direction. That’s not the recipe for clean, lined-up waves. The water temp is sitting right around average for this time of year, which is fine, but the wind is the problem.

The first recommendation we get is for Thursday, July 9th. We’re looking at 7 ft of swell from the ENE, but the period is short at 8 seconds, and with a fresh 19 mph cross-onshore wind, it’s going to be lumpy and messy. The combined energy is moderate (477), but it’s wasted. That’s the story for the next week and a half. From Thursday the 9th right through to the end of Sunday the 19th, every single session is marked as poor surf conditions. The swell stays between 6 ft and 10 ft, but the wind is relentless. It’s a fresh breeze from the ENE, either directly onshore or cross-onshore, and the wave comment is always “poor surf conditions.” The energy builds up, like on the 18th when it hits 1050, but that size at 10 ft with a 19 mph onshore wind is just a washing machine. That’s not for paddling; that’s a kiteboarding zone if you’re into that.

There’s a little shift starting Monday, July 20th. The swell drops to 3 ft and the period jumps to 16 seconds – that’s a proper long-period groundswell. The energy is strong (886), but the direction is still from the E, and the wind is still onshore from the ENE at 19 mph. A long-period swell like that at a beach break like Kailua with onshore wind will just make it break straight and close out. Not a good look.

The only flicker of hope comes mid-week, July 21st through the 23rd, but it’s still the same story. The swell is small, 3 ft to 4 ft, with long periods from the E, but the wind just won’t let up. The combined energy drops off into the low hundreds by the 24th, and it’s a real fade-out.

So, what’s the best on offer? It’s a tough call. If I had to pick one, it’d be the morning of Wednesday, July 22nd. It’s clear, the swell is only 3 ft from the E with a period of 13 seconds, and the wind is a moderate 16 mph cross-onshore from the ENE. The energy is low (362), but the conditions are about as “least bad” as they get. It’s a small, cleanish day for a longboard, but it’s not a standout. The whole stretch is a dud.

The long gap here is real. There’s no good surf on offer for the entire 16-day window. The wind is the enemy, and the swell direction never matches up with what the break wants. It’s one of those spells where you just have to wait for a change in the weather pattern.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed night. Warm (max 25°C on Thu morning, min 24°C on Wed night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Sat night. Warm (max 25°C on Sun afternoon, min 24°C on Sat night). Mainly fresh winds.

Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wed
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
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
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
ENE
8
2
ENE
8
1.9
ENE
7
2.1
ENE
7
1.8
ENE
7
1.8
ENE
7
2
ENE
7
2
ENE
7
2
ENE
7
2.1
ENE
7
2.2
ENE
7
2.3
ENE
8
2.2
ENE
8
1.9
ENE
8
1.9
ENE
8
2
ENE
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
1.8
ENE
7
1.9
ENE
7
Wave Graph
Metric surfscale
Energy kJ
725
477
400
456
334
316
394
423
412
449
516
597
612
410
389
392
353
294
276
312
338
Wind (km/h)
35
E
30
ENE
35
ENE
35
ENE
30
ENE
30
NE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
E
30
ENE
30
ENE
Wind State
cross-on
cross-on
on
cross-on
on
on
on
on
on
on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
11:56AM0.74m
12:47PM0.83m
9:36PM0.45m
1:33PM0.91m
11:18PM0.44m
2:16PM0.96m
00:30AM0.44m
2:56PM0.98m
1:30AM0.45m
3:34PM0.98m
2:26AM0.47m
4:09PM0.95m
Low Tide
3:32AM0.13m
4:28AM0.08m
8:34PM0.45m
5:24AM0.03m
8:53PM0.41m
6:18AM-0.01m
9:22PM0.38m
7:09AM-0.04m
9:53PM0.36m
7:56AM-0.04m
10:25PM0.34m
8:40AM-0.00m
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
clear
clear
part cloud
rain showers
rain showers
rain showers
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
5:56
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:16
7:16
7:16
7:15
7:15
7:15
7:15
7:15
 mm
3
1
2
1
2
1
Temp °C
24
25
25
24
24
25
25
24
24
24
24
25
25
25
25
24
24
25
25
25
25
Feels °C
21
24
23
21
22
23
24
21
21
21
21
23
23
22
23
21
22
23
23
24
23
  • 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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