Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 7 am 07 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
27.0°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 7 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 5PM (local time) - 5.5ft (1.7m), 11s period, ENE swell with offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 7.5ft (2.3m), 12s period, ENE swell with 1,420 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 5PM (local time) - 5.5ft (1.7m), 11s period with ENE swell.

Best Forecast Surf Conditions for Kailua Beach this week:

The surf forecast for Kailua Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 08) at 5PM. The primary swell is predicted to be 1.7m and 11s period with a secondary swell of 0.5m and 14s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Kailua Beach in the next 16 days are 2.3m 12s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Tuesday (Sep 08) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 8th Sep)5.5ft (1.7m) 11s
Best Surf 5PM (Tue 8th Sep)5.5ft (1.7m) 11s
Most Powerful 2AM (Tue 8th Sep)7.5ft (2.3m) 12s

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


The Lowdown

G’day, Rusty here. Look, I’ll be straight with you – this outlook for Kailua Beach is a tough one. We’re looking at a long stretch of poor conditions, and there’s actually no surf worth paddling out for in the first week. The first real chance of anything decent doesn’t show up until Tuesday, the 8th of September, and even then, it’s a one-off window.

The overall pattern is dominated by a lot of cross-onshore and onshore wind, especially from the east and east-northeast, which is just trashing the surface. The water temp is sitting at 81°, which is bang on average for this time of year, so at least you won’t need a steamer.

Now, the only time this place looks even close to working is on Tuesday, the 8th of September. The morning session is a bit of a gamble – you’ve got a 6 ft swell from the east-northeast with an 11-second period, which is a nice groundswell, but the wind is a cross-offshore from the SSW at 19 mph. It’s cleaning it up, but the energy is moderate (884). The real standout is Tuesday afternoon: the wind swings offshore from the SSW at 12 mph, and that’s a major positive. The swell drops slightly to 6 ft from the east-northeast, still with that 11-second period, and the energy is moderate (808). This is a point break, so that longer-period groundswell should wrap in nicely, and with offshore wind, it’ll be clean. It’s expecting very good surf conditions. If you can get out there, that’s the one session. The break is fairly consistent, but crowds are possible.

After that, it’s back to the doldrums. From Wednesday the 9th right through to the end of the 16-day window, every single session is rated as poor. The swell drops to between 2 ft and 5 ft, but it’s constantly hammered by cross-onshore or onshore winds, making it lumpy, choppy, or just messy. The swell energy drops off to weak (97) by the 14th, and even when a new NNW swell shows up around the 20th of September, the wind is still blowing straight onshore or cross-onshore, so it’s all just junk. The energy picks up a bit (398) but it’s wasted with that wind.

There’s nothing here for beginners or experts – the swell never gets over 8 ft, but the quality is so bad it doesn’t matter. For the most part, this setup looks more interesting for kite surfing than paddle surfing, given the strong cross-onshore winds and lumpy conditions.

So, bottom line: your best bet, and really your only bet, is Tuesday afternoon the 8th of September. Get it while it’s clean. The rest of the 16 days is a write-off.

Rusty.

Short Range Forecast

Heavy rain (total 23mm), heaviest during Mon morning. Warm (max 28°C on Tue morning, min 26°C on Mon morning). Winds decreasing (strong winds from the SSE on Mon night, calm by Wed morning).

Days 4-6 Weather Summary

Some drizzle, heaviest during Sat night. Warm (max 26°C on Thu morning, min 25°C on Thu afternoon). Wind will be generally light.

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
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
1
3
3
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)
1.4
E
13
2.1
E
8
2.3
ENE
12
1.9
ENE
11
1.7
ENE
11
1.4
ENE
10
1.2
ENE
9
0.7
E
13
1.6
ENE
7
1.5
ENE
7
1.5
ENE
7
1.3
ENE
7
1.1
ENE
7
1.2
ENE
11
1.1
ENE
10
0.9
ENE
10
0.9
NE
9
0.8
ENE
9
0.7
NE
8
0.8
NE
8
0.8
NE
8
Wave Graph
Metric surfscale
Energy kJ
633
598
1420
870
711
378
211
168
245
231
229
162
127
313
260
163
128
113
72
84
84
Wind (km/h)
35
ESE
35
ESE
45
SSE
30
SSW
20
SSW
10
SSW
10
E
15
E
20
E
25
E
20
ENE
20
ENE
15
ENE
15
ENE
15
E
15
E
20
ENE
20
E
20
E
15
NE
15
NE
Wind State
cross-on
cross
cross-off
cross-off
off
cross-off
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
on
on
High Tide
12:55PM0.86m
00:19AM0.47m
1:27PM0.87m
1:08AM0.54m
1:55PM0.86m
1:52AM0.61m
2:20PM0.82m
2:33AM0.67m
2:42PM0.77m
3:12AM0.71m
3:01PM0.71m
3:52AM0.73m
3:16PM0.65m
4:32AM0.72m
Low Tide
7:50PM0.31m
6:14AM0.11m
8:04PM0.27m
7:02AM0.11m
8:22PM0.23m
7:46AM0.14m
8:42PM0.19m
8:26AM0.19m
9:02PM0.16m
9:06AM0.25m
9:22PM0.14m
9:44AM0.32m
9:43PM0.13m
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
clear
rain showers
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:40
6:39
6:38
6:37
6:37
6:37
6:36
 mm
5
6
9
3
1
Temp °C
26
26
27
28
28
27
27
27
26
26
25
25
25
25
25
25
25
25
25
25
25
Feels °C
24
24
24
28
27
30
30
30
28
26
25
25
25
26
26
26
26
26
25
25
25
  • 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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