Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 7 am 21 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 21 Jul 2026:

  • Most powerful swell: Monday 27 Jul, 11PM (local time) - 5.5ft (1.7m), 14s period, E swell with 1,147 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 1.7m 14s and forecast to arrive on Monday (Jul 27) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 14s period and expected on Tuesday (Jul 21) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Mon 27th Jul)5.5ft (1.7m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the menu for Kailua Beach over the next couple of weeks.

Straight up, I’ve got to be honest with you – this is a tough stretch. For the first seven days, the conditions are just plain ugly. That ENE wind is blowing fresh and cross-onshore, making a mess of things. The swell is mostly short-period windswell, around 7-8 seconds, and the energy numbers are low to moderate, with the combined energy reading between 206 and 595. Combine that with a "poor surf conditions" tag on every single session, and you’ve got a classic wait-and-see period. The water temperature is sitting around 80° – that’s pretty much normal for this time of year, so no complaints there.

Now, the real story starts to shift around the 26th of July. Sunday morning, the wind swings NE and goes offshore, but more importantly, the period jumps to a massive 16 seconds. That’s a long-period groundswell, and it’s coming from the east. The combined energy hits 1119 – that’s moderate to strong energy, which is a big step up. But here’s the kicker: despite this, the reports still say "poor surf conditions". That’s because with a long-period swell like that, at a point break like Kailua Beach, it can get a bit too straight and fat. Still, it’s the best-looking wave energy in the whole forecast.

The quality actually gets a little more interesting around the 28th of July into the 30th. The swell holds around 6 ft to 6 ft, with periods between 12 and 13 seconds, and the wind is light and offshore (NE to ENE at 6-12 mph). The combined energy is strong, ranging from 1103 to 1300. The reports shift from "poor" to "marginal" – a clear sign that the combination of good wind and real swell is starting to line up. The 30th of July, Thursday morning, looks like the pick of the bunch: 6 ft from the ENE, 10-second period, light offshore breeze, and a combined energy of 755. That’s the kind of session you want to be there for, even if the consistency might be a little tricky.

After that, it’s back to the same old story. The wind picks up again, the period drops, and the conditions go sour. So, if you’re looking for a window, keep your eyes on the 28th through the 30th of July. It’s not a perfect run, but it’s the best we’ve got.

Stay safe out there, and don’t fight the wind.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Fri morning. Warm (max 25°C on Fri morning, min 24°C on Fri morning). Mainly fresh winds.

Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
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
1
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)
1.3
ENE
7
1.1
NE
7
1.3
ENE
7
1.6
ENE
7
1.5
ENE
6
1.5
ENE
6
2
ENE
7
1.8
ENE
7
2.1
ENE
7
1.9
ENE
7
2
ENE
7
2
ENE
7
2
ENE
8
1.9
NE
8
2.1
ENE
8
1.1
E
15
1.3
E
16
1.5
E
16
1.5
E
14
1.5
E
14
1.7
E
14
Wave Graph
Metric surfscale
Energy kJ
158
118
162
232
183
145
330
268
385
358
412
440
452
423
531
563
827
1060
928
915
1130
Wind (km/h)
20
ENE
20
ENE
20
E
35
ENE
30
ENE
30
E
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
25
NE
25
ENE
30
ENE
20
ENE
25
ENE
25
ENE
Wind State
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
on
on
High Tide
10:10AM0.59m
5:15PM0.56m
11:42AM0.65m
12:30PM0.71m
1:05PM0.75m
1:36PM0.79m
11:19PM0.41m
2:05PM0.83m
00:19AM0.43m
2:32PM0.85m
1:04AM0.45m
Low Tide
2:38PM0.55m
2:27AM0.21m
3:25AM0.19m
4:27AM0.17m
5:23AM0.14m
9:11PM0.40m
6:10AM0.11m
9:11PM0.38m
6:50AM0.08m
9:23PM0.37m
clear
clear
clear
rain showers
part cloud
rain showers
rain showers
clear
clear
rain showers
clear
part cloud
part cloud
part cloud
light rain
part cloud
part cloud
rain showers
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
6:00
6:00
6:01
6:01
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:14
7:14
7:14
7:13
7:13
7:12
7:12
 mm
1
1
1
2
2
2
Temp °C
25
25
25
25
25
24
25
25
24
25
25
24
25
25
24
24
25
24
24
25
24
Feels °C
26
25
25
24
23
23
23
22
21
23
23
21
24
23
22
22
24
22
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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