Kailua Beach Surf Break

Lat Long: 21.41° N 157.74° W

Kailua Beach Surf Forecast and Surf Report

Issued: 1 pm 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kailua Beach sea temperature is
26.2° 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 18 Jul 2026:

  • Most powerful swell: Saturday 18 Jul, 8PM (local time) - 6ft (1.9m), 8s period, ENE swell with 395 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 8s and forecast to arrive on Saturday (Jul 18) at 8PM. 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 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 8PM (Sat 18th Jul)6ft (1.9m) 8s

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


The Lowdown

G'day, Rusty here, lookin' at the surf outlook for Kailua Beach. I gotta be straight with ya – it's a bit of a tough stretch ahead. The whole 16-day window is a mixed bag of onshore winds and lumpy conditions, and honestly, for a point break that really wants a clean NE swell, the wind is just not playin' ball. The water's sittin' at a warm 79°, which is dead average for this time of year, so no surprises there.

The first real sniff of anything worth paddling out for doesn't come until Monday, the 28th of July. Before that, from Friday the 17th right through to Sunday the 27th, it's a long, frustrating run of "poor surf conditions" and "moderate to fresh cross-onshore" wind. The swell is there, but it's messy and chopped up. The wind is mostly from the ENE, blowin' across the break, and the period is short, mostly 6 to 8 seconds. That's weak, wind-affected slop. The combined energy is moderate, often in the 200s or 300s (174 to 665), but the wind just kills it. There's a big spike of energy on the 26th and 27th (over 1400 to 2000) with a super long period of 16 to 17 seconds from the east, but with a fresh onshore breeze, it's still rated poor. That long period groundswell would be a dream if the wind was right, but it's not.

The only day that even gets a look-in is Tuesday, the 28th of July. The morning is "marginal surf forecast" with a score of 1 out of 10. The swell is a solid 7 ft from the east, with a period of 15 seconds, so that's a long-period groundswell with plenty of energy (combined energy is 1930 – very strong). The wind is from the NE at 9 mph, which is onshore. That's a problem. For a point break like Kailua Beach, that onshore wind will make it a bit bumpy, but that long period will hold the shape better than the short-period junk we've been seeing. The afternoon is similar, 7 ft from the east with a 14-second period, but the wind picks up to 12 mph, still onshore. It's not perfect, but it's the only day with a chance of a decent wave. The swell direction is east, which is not the ideal NE the spot wants, but it's close enough to work. For experts only, as 7 ft with onshore wind gets heavy. After that, the swell drops back down and the wind stays onshore, so that's your one shot.

So, here's the call: the whole run is a bit of a write-off until Tuesday the 28th. That's a full 11 days of waiting. If you're desperate, that Tuesday morning might offer a few clean-ish sets, but don't expect perfection. It's a long wait for a maybe. For the rest of the time, the setup looks more interesting for kite surfing than paddle surfing, with that strong, consistent onshore breeze.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon morning. Warm (max 26°C on Fri afternoon, min 24°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Mon night. Warm (max 25°C on Mon afternoon, min 24°C on Mon night). Mainly fresh winds.

Fri
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
ENE
7
1.7
ENE
6
1.9
ENE
7
1.9
ENE
8
1.8
ENE
8
1.6
ENE
8
1.5
ENE
8
1.3
E
8
1.4
ENE
8
1.4
ENE
7
1.3
ENE
7
1.1
ENE
7
1.2
ENE
7
1.2
ENE
7
1.4
ENE
7
1.2
ENE
7
1.4
ENE
6
0.7
E
12
1.6
ENE
6
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
192
226
335
385
394
310
284
213
220
214
162
117
140
136
171
121
131
150
198
261
Wind (km/h)
25
ENE
30
E
30
ENE
35
ENE
25
ENE
30
ENE
30
ENE
25
ENE
25
ENE
20
NE
20
NE
20
NE
25
ENE
20
E
25
ENE
25
ENE
25
ENE
30
ENE
35
ENE
25
E
Wind State
on
cross-on
cross-on
cross-on
on
on
on
cross-on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
5:09PM0.83m
5:18AM0.51m
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
Low Tide
11:59PM0.27m
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
part cloud
part cloud
clear
part cloud
clear
clear
clear
rain showers
clear
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
clear
clear
rain showers
<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
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:14
7:14
7:14
 mm
1
1
1
1
1
2
2
1
Temp °C
26
25
25
25
24
25
25
25
25
25
25
25
25
25
24
25
25
25
25
25
Feels °C
26
25
23
23
22
23
24
23
24
24
25
25
25
24
24
24
24
23
23
23
  • Map Icons:
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  • 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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