Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 7 am 13 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
26.1° C
0.0° 

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 13 Jul 2026:

  • Most powerful swell: Sunday 19 Jul, 8AM (local time) - 6ft (1.9m), 7s period, E swell with 387 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 1.9m 7s and forecast to arrive on Sunday (Jul 19) at 8AM. 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 Monday (Jul 20) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Sun 19th Jul)6ft (1.9m) 7s

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


The Lowdown

Alright folks, it’s Rusty here. Let’s cut to the chase: we’re looking at a pretty grim run ahead for Kailua Beach. This is a classic case of the tradewinds ruining the party. We’ve got a solid 16-day window, but honestly, there’s not a single day in there that’s worth paddling out for a proper session.

The pattern is locked in: persistent onshore and cross-onshore winds cranking out of the ENE and E, blowing between 9 mph and 19 mph for the vast majority of the period. That’s going to chop up any wave that tries to form. The swell is there, bouncing between 3 ft and 6 ft, but it’s all short-period, weak windswell (periods of 6 to 8 seconds) with a combined energy that mostly sits in the low-to-mid 200s. That’s weak, messy energy. The water temperature is sitting at 79°, which is pretty average for this time of year, so nothing weird there.

There’s a real gap in quality here. It’s not until Monday, July 27th, that we see a glimmer of something different. That morning brings a long-period groundswell of 15 seconds, but it’s from the east at only 3 ft. The wind finally goes light and offshore from the NE. It’s a tease, really. The energy is moderate (611), but the size is just too small to get excited about. The afternoon of the 27th is even worse. Then Tuesday, July 28th, shows a bigger pulse of 6 ft from the east with a 12-second period and a strong energy reading of 1221, but the wind is back onshore and cross-onshore, so it’s going to be a bumpy, blown-out mess. Also, that long-period swell at a beach break like Kailua will likely close out and be hard to read.

The best bet? Don’t bother. The whole stretch is a write-off. It’s a blank run. For a point break, we need clean conditions, and we’re just not getting them. With the persistent onshore winds and the short-period, weak swell, this setup honestly looks more interesting for kite surfing than paddle surfing through the first week.

Rusty.

Short Range Forecast

Moderate rain (total 17mm), heaviest on Tue morning. Warm (max 25°C on Wed afternoon, min 24°C on Mon morning). Mainly fresh winds.

Days 4-6 Weather Summary

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

Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
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)
1.7
ENE
8
1.6
ENE
8
1.1
E
8
1.5
NE
7
1.5
NE
8
1.3
NE
7
1.2
ENE
7
1
ENE
7
1.3
NE
7
1.4
ENE
6
1.2
ENE
6
1.7
ENE
7
1.5
E
6
1.4
ENE
6
1.4
ENE
6
1.6
E
7
1.7
ENE
7
1.7
E
6
1.8
ENE
8
1.8
ENE
7
1.6
ENE
7
Wave Graph
Metric surfscale
Energy kJ
345
277
144
242
248
194
139
105
176
155
123
247
194
160
150
226
261
221
375
276
206
Wind (km/h)
25
ENE
25
ENE
20
ENE
20
ENE
25
ENE
20
ENE
15
E
20
E
20
E
25
E
20
ENE
25
E
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
20
NE
Wind State
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
on
High Tide
2:56PM0.98m
1:30AM0.45m
3:34PM0.98m
2:26AM0.47m
4:09PM0.95m
3:20AM0.49m
4:41PM0.89m
4:16AM0.50m
5:09PM0.83m
5:18AM0.51m
5:32PM0.75m
6:30AM0.52m
5:48PM0.68m
Low Tide
9:53PM0.36m
7:56AM-0.04m
10:25PM0.34m
8:40AM-0.00m
10:56PM0.31m
9:22AM0.06m
11:27PM0.29m
10:03AM0.16m
11:59PM0.27m
10:43AM0.26m
00:30AM0.24m
11:24AM0.37m
1:03AM0.23m
part cloud
clear
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
rain showers
clear
clear
part cloud
rain showers
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
5:56
5:58
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:15
7:15
7:15
 mm
1
3
2
4
4
2
1
1
2
1
Temp °C
24
24
24
24
24
24
24
25
25
25
25
25
25
25
25
25
25
24
24
25
24
Feels °C
21
22
23
24
23
23
24
26
25
25
25
25
24
24
25
24
23
22
21
23
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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