Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 7 am 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
26.4° C
0.2° 

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 18 Jul 2026:

  • Most powerful swell: Saturday 25 Jul, 2AM (local time) - 7.5ft (2.3m), 7s period, ENE swell with 557 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 2.3m 7s and forecast to arrive on Saturday (Jul 25) 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 0.5m 16s period and expected on Monday (Jul 20) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Sat 25th Jul)7.5ft (2.3m) 7s

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


The Lowdown

Alright, this is Rusty. Let's have a look at what the next couple of weeks have in store for us around Kailua Beach.

Right off the bat, I gotta be straight with you – the next week and a half is pretty grim for a proper paddle surf. For days on end, from Saturday the 18th right through to Wednesday the 29th of July, we’re looking at a constant, strong onshore or cross-onshore breeze from the ENE, blowing at 12 to 22 mph. That’s just going to tear the surface to pieces. The swell is there, but it’s messy, short-period stuff – mostly 4ft to 7ft, but with a period of just 7 to 8 seconds, so it’s all weak, choppy, and lumpy. The combined energy is moderate, hitting between 191 and 638, but it’s all for nothing with that wind. This is a stretch where you’d be better off on a kite than a paddle board, honestly. There’s a solid 11-day gap of no recommendations here.

Now, we do get a little glimmer of hope late in the period. The real standout, and the only one worth circling on your calendar, is the morning of Thursday, July 30th. That morning, the wind finally eases off, dropping to a light 6 mph cross-onshore breeze from the NNE. That’ll just be a light ruffle on the surface, so the waves will be clean. The swell size jumps to a solid 16ft from the East, but here’s the catch – that’s generated by a very long period groundswell of 11 seconds. The combined energy rockets up to 6259, which is very strong indeed. That’s a lot of water moving. For a point break like Kailua Beach, which is exposed to the NE, that long period can actually make it wall up and break with a lot of power. That’s expert territory at 16ft, so it’s not for the faint of heart. The water temp is a warm 80°, which is bang on average for this time of year, so no surprises there.

The next day, Friday the 31st, is still okay in the morning with 8ft from the ENE, but the period drops back to 8 seconds and the wind picks up to a gentle 9 mph cross-onshore, making it a bit choppy. It’s a consolation prize after the big day.

So, to wrap it up: the first week and a half is a write-off. The single best moment is the morning of Thursday, July 30th, when the stars briefly align for some big, powerful, clean surf at Kailua Beach. After that, it fades back into mediocrity. Keep your eyes on that Thursday morning window.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Some drizzle, heaviest during Thu night. Warm (max 25°C on Tue morning, min 24°C on Wed morning). Mainly fresh winds.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
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
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)
1.8
ENE
7
2
ENE
8
1.7
ENE
8
1.6
ENE
8
1.5
ENE
8
1.5
ENE
8
1.4
ENE
8
1.6
ENE
7
0.9
NE
7
1.3
ENE
7
1.3
ENE
7
1.6
ENE
7
1.4
ENE
7
1.3
ENE
7
1.8
ENE
6
1.7
ENE
7
1.8
ENE
6
1.9
ENE
7
1.9
ENE
7
2.1
ENE
7
2.3
ENE
7
Wave Graph
Metric surfscale
Energy kJ
327
426
353
310
266
270
226
256
87
149
158
220
171
144
261
240
282
332
336
432
557
Wind (km/h)
35
ENE
35
ENE
30
ENE
30
ENE
25
ENE
25
ENE
20
ENE
25
ENE
20
ENE
20
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
E
30
ENE
35
ENE
30
ENE
Wind State
cross-on
cross-on
on
cross-on
on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
High Tide
5:32PM0.75m
6:30AM0.52m
5:48PM0.68m
8:04AM0.54m
5:54PM0.61m
10:10AM0.59m
5:15PM0.56m
11:42AM0.65m
12:30PM0.71m
1:05PM0.75m
Low Tide
10:43AM0.26m
00:30AM0.24m
11:24AM0.37m
1:03AM0.23m
12:17PM0.48m
1:41AM0.22m
2:38PM0.55m
2:27AM0.21m
3:25AM0.19m
4:27AM0.17m
clear
clear
clear
clear
clear
clear
rain showers
part cloud
rain showers
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
rain showers
clear
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:58
5:58
6:00
6:00
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:14
7:14
7:14
7:13
 mm
1
2
1
1
Temp °C
25
25
24
25
25
25
24
25
25
25
25
25
25
25
25
25
25
25
24
25
25
Feels °C
23
23
22
23
23
24
23
24
25
25
24
24
23
24
23
23
22
22
22
22
22
  • 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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