Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 pm 31 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.6° C
0.3° 

Waimanalo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Waimanalo surf forecast from 1 Aug 2026:

  • Most powerful swell: Sunday 2 Aug, 2AM (local time) - 8ft (2.5m), 8s period, ENE swell with 908 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 2.5m 8s and forecast to arrive on Sunday (Aug 02) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 12s period and expected on Thursday (Aug 06) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Sun 2nd Aug)8ft (2.5m) 8s

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


The Lowdown

Right, folks, Rusty here. I’ve had a look at what’s on offer for the next couple of weeks, and I gotta be straight with you – it’s a tough stretch. The whole 16-day window is looking pretty grim, with no real standouts to get excited about. The only spot with any solid data is Waimanalo, and even then, it’s a story of constant onshore winds, messy conditions, and poor surf quality. The pattern is pretty much set for the duration: persistent ENE winds, not letting up, keeping the ocean bumpy and uninviting.

The first real chance of anything surfable is from the very start, on Friday, July 31st. Waimanalo is showing a 7 ft swell from the east with a short period of 8 seconds, and combined wave energy is moderate at 747. But the wind is a strong onshore breeze from the ENE at 25 mph, which is just going to tear it up. The water temp is 80°, which is about normal for this time of year, so that’s one thing not to complain about. The conditions are just poor.

Moving into the weekend, Saturday the 1st and Sunday the 2nd of August, the swell bumps up a bit, hitting 8 ft on Saturday, but the energy climbs into the strong range (1107). That’s a lot of water moving, but with those same strong onshore winds, it’s going to be a messy, blown-out mess. This size is getting into the "experts only" territory, but honestly, with the wind, it’s not really surfable for anyone. The period stays short at 8 seconds, so no real shape to it.

The whole first week just repeats this pattern. The swell slowly drops from 8 ft down to 4 ft by the Wednesday the 5th, but the wind barely lets up. It shifts from a strong breeze to a moderate breeze, but it’s still onshore or cross-onshore the whole time. The energy drops from moderate to weak (213), but the commentary is consistently "poor surf conditions". There’s a moment on Tuesday the 4th where the period stretches to 11 seconds, which is a groundswell signal, but it’s still only 5 ft and with the wind on it, it’s just not going to be clean.

The second week, from the 7th of August onwards, is more of the same. The swell hovers around 4 ft to 6 ft, with short periods of 7 to 8 seconds, and the wind is a relentless fresh breeze from the ENE. The combined energy stays in the weak to low-moderate range (187 to 435). By the time we get to the 15th, the swell is down to 3 ft. There’s just no window of clean, light wind to make any of it worthwhile. The forecast is consistent, but it’s consistently bad for surf.

So, what’s the call? Honestly, there isn’t one. For the full 16 days, there are no good surf options. If you’re a paddle surfer, you’re better off finding something else to do. With that persistent onshore wind and the break being a beach setup, this whole stretch looks more interesting for kite surfing than catching a wave on a shortboard. The forecasts can always change, but as it stands, this is a blank run.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 25°C on Fri afternoon, min 24°C on Mon morning). Winds decreasing (strong winds from the ENE on Fri night, moderate winds from the ENE by Mon morning).

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Mon night. Warm (max 26°C on Tue night, min 25°C on Mon afternoon). Wind will be generally light.

Fri
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
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)
2.1
E
8
2.5
E
8
2.5
E
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2.2
ENE
8
2.2
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.5
ENE
11
1.4
ENE
11
1.3
ENE
10
1.3
ENE
9
1.1
ENE
9
1.4
E
8
1.3
ENE
8
1.2
ENE
7
1.3
E
6
Wave Graph
Metric surfscale
Energy kJ
504
756
902
804
908
740
650
604
402
370
361
515
436
314
271
206
266
223
160
126
Wind (km/h)
40
ENE
40
ENE
40
ENE
40
ENE
40
ENE
35
ENE
35
ENE
30
ENE
25
ENE
25
NE
25
ENE
20
ENE
20
NE
15
ENE
15
ENE
20
ENE
20
ENE
25
ENE
30
ENE
25
ENE
Wind State
on
cross-on
cross-on
on
cross-on
on
on
on
on
on
on
on
on
cross-on
on
on
cross-on
cross-on
on
cross-on
High Tide
4:27PM0.64m
3:46AM0.36m
4:44PM0.61m
4:42AM0.37m
4:58PM0.57m
5:48AM0.38m
5:09PM0.52m
7:16AM0.41m
5:14PM0.48m
9:27AM0.45m
4:57PM0.44m
11:19AM0.53m
Low Tide
10:57PM0.16m
9:37AM0.05m
11:22PM0.13m
10:12AM0.11m
11:50PM0.10m
10:52AM0.19m
00:22AM0.07m
11:44AM0.27m
1:03AM0.04m
1:35PM0.35m
1:59AM0.02m
3:11AM-0.00m
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
rain showers
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:08
7:08
7:07
7:07
7:07
7:07
 mm
2
Temp °C
25
25
25
25
25
25
25
25
25
25
25
25
25
26
26
26
26
26
26
25
Feels °C
21
21
20
21
21
21
21
22
24
23
24
26
25
28
28
27
27
26
25
24
  • 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 Waimanalo Surf forecast

The above surf forecast table for Waimanalo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waimanalo can be found by selecting the local surf guide option on the grey menu. Our Waimanalo 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 (Waimanalo) 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 Waimanalo 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.

Waimanalo is 7 km (4 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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