Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 7 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
27.3°C
0.5° 

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 24 Aug 2026:

  • Most powerful swell: Tuesday 25 Aug, 2PM (local time) - 6.5ft (2.0m), 7s period, E swell with 388 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 2.0m 7s and forecast to arrive on Tuesday (Aug 25) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 17s period and expected on Thursday (Aug 27) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Tue 25th Aug)6.5ft (2.0m) 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’s on offer for the next couple of weeks.

First off, if you’re thinking about getting wet at Kailua Beach (Oahu), I’ve got to be straight with you – it’s a rough stretch ahead. The pattern for the entire 16-day window is pretty ugly. There’s no standout window of clean surf. It’s a long, long run of poor conditions, and the only hint of something rideable doesn’t show up until the second week.

We start from Monday the 24th of August with a persistent easterly trade wind blowing at 19 mph or more. That’s a fresh cross-onshore breeze chopping up the water and making everything lumpy. The swell sits around 4 ft to 6 ft from the east with a short, weak period of just 6 to 7 seconds. The wave energy is moderate – values in the 100s to low 400s – but it’s all junk. This rubbish continues day after day through the rest of August and into early September.

There is actually a massive spike in swell energy on the 5th and 6th of September. Swell hits 7 ft from the east-northeast with a very long period of 13 seconds on the 5th, and the combined energy rockets up over 1400! That’s strong to very strong wave energy. But the wind still blows 12 to 19 mph cross-onshore. That much long-period groundswell with wind chop is gonna be a washing machine. At a beach break, that long period will make it break too straight and messy. Not your day.

The first hint of something a bit better comes on Monday the 7th of September. The wind drops to a gentle breeze at 9 mph, still cross-onshore, but the swell is a solid 7 ft from the northeast with a period of 11 seconds and the energy is over 1000. The forecast calls it marginal, but for a surfer, this is the closest we get. It’s still a bit lumpy, but it’s the only period where the wind isn’t ruining everything. The following morning on Tuesday the 8th looks similar, but with a shorter period.

So, if I have to call one thing the best on offer, it’s that Monday the 7th of September. It’s not clean, but it’s the least dirty of the lot. The rest of the time? Just forget it. There’s a big gap of nothing good from the start until that Monday. Kailua Beach is pretty consistent in that it usually has some swell, but with this wind pattern, it’s a total write-off. Honestly, if you’re keen on getting out, this setup looks more interesting for kite surfing than paddling a surfboard for most of it.

Stay patient. Rusty.

Short Range Forecast

Some drizzle, heaviest during Sun night. Warm (max 26°C on Sun night, min 25°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Fri morning, min 25°C on Wed night). Mainly fresh winds.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
ENE
7
1.8
E
7
1.7
E
7
1.6
E
7
1.9
E
7
1.9
E
7
1.7
E
7
1.6
ENE
6
1.5
ENE
6
1.4
ENE
6
1.3
ENE
6
1.4
ENE
6
1.5
E
6
1.5
ENE
6
1.8
ENE
6
1.7
ENE
7
1.8
ENE
7
1.8
ENE
7
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
385
293
266
247
335
345
266
225
170
165
139
135
171
170
244
268
276
295
277
Wind (km/h)
35
ENE
30
ENE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
30
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
High Tide
11:42PM0.41m
1:34PM0.81m
00:29AM0.45m
1:57PM0.83m
1:09AM0.50m
2:18PM0.84m
1:46AM0.54m
2:39PM0.83m
2:24AM0.59m
2:58PM0.81m
3:03AM0.63m
3:17PM0.77m
3:44AM0.66m
Low Tide
8:28PM0.36m
5:55AM0.14m
8:26PM0.35m
6:35AM0.11m
8:34PM0.32m
7:11AM0.10m
8:47PM0.29m
7:45AM0.11m
9:03PM0.26m
8:19AM0.14m
9:21PM0.22m
8:54AM0.19m
9:41PM0.18m
thunderstorm
part cloud
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
6:11
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:53
6:52
6:52
6:51
6:50
6:50
 mm
1
1
Temp °C
26
26
26
26
26
26
26
25
25
25
25
25
25
26
25
25
25
25
25
Feels °C
25
26
26
27
24
24
24
22
22
23
23
24
23
24
23
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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