Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
27.2°C
0.4° 

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


Waimanalo surf forecast from 26 Aug 2026:

  • Most powerful swell: Wednesday 2 Sep, 8AM (local time) - 6ft (1.9m), 8s period, ENE swell with 464 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 1.9m 8s and forecast to arrive on Wednesday (Sep 02) at 8AM. Winds are predicted to be 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 8AM (Wed 2nd Sep)6ft (1.9m) 8s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on offer for Waimanalo over the next couple of weeks.

Right off the bat, I gotta be straight with you – this stretch is looking pretty grim. The first week is a write-off. We’ve got onshore or cross-onshore winds blowing from the ENE, mostly in that 18 mph range, and it’s making a mess of things. The combined swell energy is moderate to strong, hitting values like 327 and 375 towards the weekend, but it’s all short-period windswell at 6 to 7 seconds. The wave comment says it all: “poor surf conditions.” The water temp is sitting around 81° with a tiny anomaly of +0.7°, so that’s just about average for the time of year.

That poor run keeps going right through the first week and into the start of the second. We’re looking at nearly a full week of dud surf. The wind does ease slightly into the first days of September, dropping to a moderate breeze around 12-15 mph, but the swell is still onshore and messy. The combined energy peaks at 533 on Wednesday, 2nd September, but it’s all onshore junk. Honestly, this setup looks more interesting for kite surfing than paddle surfing.

Now, hang in there, because there’s a glimpse of hope right at the end of the forecast. On Wednesday, 9th September, things change. We’ve got a 4 ft to 5 ft swell coming from the east, swinging to the ESE, with a period jumping to 12 seconds. That’s a proper groundswell folks. The combined energy is strong at 469 and 539, and the wind shifts to a gentle breeze from the ENE, going light and even offshore-ish from the NE. The water’s still clean. This is the standout. The swell is modest, but that long period and cleaner wind will make for some lined-up waves, ideal for a point break or reef. Keep in mind, with a period over 11 seconds, it’s a groundswell and can be very straight at a beach break, but this spot is exposed to the NE. It’s not a big swell, so it’s fine for most levels, but crowds are possible here.

The following morning, Thursday 10th September, still looks promising with a 3 ft to 4 ft easterly swell, 12-second period, and a light breeze from the E or ENE. The combined energy is 384 to 415. It’s smaller, but clean. So, the best bet is this Wednesday-Thursday window next week. Long range, so not 100% locked in, but it’s the only real chance we’ve got.

Rusty, signing off.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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)
1.5
E
6
1.4
ENE
6
1.5
E
6
1.5
ENE
6
1.5
ENE
6
1.4
ENE
6
1.4
ENE
6
1.4
ENE
6
1.6
ENE
6
1.6
ENE
6
1.9
ENE
7
1.7
ENE
7
1.7
ENE
7
1.7
ENE
7
1.7
ENE
7
1.8
ENE
7
1.7
ENE
7
1.7
ENE
8
1.7
ENE
8
1.7
ENE
8
1.4
NE
8
Wave Graph
Metric surfscale
Energy kJ
190
165
176
151
160
145
122
135
182
201
298
265
277
241
234
290
278
374
433
392
274
Wind (km/h)
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
35
ENE
30
ENE
25
ENE
30
ENE
30
ENE
25
ENE
20
ENE
25
ENE
20
ENE
Wind State
cross-on
on
cross-on
on
on
cross-on
on
on
cross-on
on
on
on
cross-on
on
cross-on
cross-on
on
on
on
on
cross-on
High Tide
2:38PM0.65m
1:42AM0.40m
2:57PM0.65m
2:22AM0.43m
3:14PM0.63m
3:05AM0.46m
3:30PM0.60m
3:52AM0.48m
3:45PM0.56m
4:44AM0.51m
3:57PM0.51m
5:44AM0.52m
4:04PM0.47m
Low Tide
8:49PM0.18m
7:45AM-0.00m
9:08PM0.15m
8:18AM0.02m
9:29PM0.12m
8:54AM0.07m
9:52PM0.09m
9:33AM0.13m
10:17PM0.05m
10:16AM0.20m
10:46PM0.03m
11:06AM0.27m
11:19PM0.02m
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
rain showers
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:13
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:50
6:49
6:47
6:47
6:46
 mm
1
Temp °C
26
25
25
25
26
26
26
26
25
25
25
26
26
26
25
26
26
26
26
26
26
Feels °C
23
22
22
22
23
24
23
23
23
22
22
23
24
24
23
24
24
25
27
26
26
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Waimanalo:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waimanalo surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest