Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 7 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.7° C
0.0° 

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


Waimanalo surf forecast from 19 Aug 2026:

  • Most powerful swell: Tuesday 25 Aug, 2PM (local time) - 5.5ft (1.7m), 8s period, ENE swell with 383 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 1.7m 8s and forecast to arrive on Tuesday (Aug 25) at 2PM. 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 16s period and expected on Saturday (Aug 22) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Tue 25th Aug)5.5ft (1.7m) 8s

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


The Lowdown

Alright, let’s talk about what’s happening at Waimanalo, folks. This is a tough one, I gotta be straight with you. The next couple of weeks are looking pretty grim for surf out here. We've got a long stretch of poor conditions ahead, so if you're itching to paddle out, you might need to find something else to do for a while.

Starting now and running through the end of August, it’s a write-off. The winds are mostly onshore or cross-onshore, blowing from the ENE and NE, kicking up chop and messing up the waves. The swell is small and weak, with combined energy readings mostly in the low hundreds (132–303) – that’s weak energy, not enough to get excited about. Swell heights are hovering around 2 ft to 6 ft, but with short periods of 6 to 8 seconds, it’s just windswell, lacking any real punch. The water temperature is pretty average for this time of year, so no surprises there.

We hit a real low point on the 24th of August, with a near-gale wind from the ENE at 31 mph and a swell of 8 ft, but the energy reading of 488 tells you it’s all messy, blown-out junk. This is kite-surfing weather, not paddle surfing.

Then, right at the very end of the forecast window, there’s a glimmer of something on the 1st and 2nd of September. The swell picks up significantly, with heights hitting 7 ft to 8 ft, and the period jumps to 11–13 seconds, which is proper groundswell energy. The combined energy readings go through the roof – 1391, 2447, 2489 – that’s strong to very strong energy. But don’t get too excited yet. The wind is still onshore, blowing from the ENE and NE at 16 to 25 mph, so the quality will be poor. The swell direction is also from the ENE and E, which is a bit off the optimum NE direction for Waimanalo, so it won’t be breaking its best. This is a long-range standout, promising but uncertain. For a beginner-friendly spot like Waimanalo, a 8 ft swell is already too big for newer surfers, pushing it into expert-only territory.

So, to sum it up: we’ve got a solid two-week gap with no good surf. The first week is a total bust, and the second week isn’t looking much better. The only potential is that distant swell in early September, but it’s a long way off and the winds will likely ruin it. Hang tight, and maybe the forecasts will change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Thu night, min 24°C on Wed morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Mon afternoon. Warm (max 26°C on Sat morning, min 25°C on Sat night). Mainly strong winds.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
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)
0.8
E
8
1
NE
6
0.9
E
8
0.7
E
8
1.2
ENE
7
0.8
ENE
7
0.8
NE
7
1.2
ENE
7
1.3
ENE
7
1.4
ENE
6
1.6
E
6
1.7
E
7
1.9
ENE
6
1.7
ENE
6
1.6
ENE
6
1.6
ENE
6
1.7
ENE
6
1.6
ENE
6
1.7
E
8
1.6
ENE
8
1.5
ENE
7
Wave Graph
Metric surfscale
Energy kJ
89
75
102
55
138
69
54
136
141
170
209
262
289
230
176
179
208
194
374
341
192
Wind (km/h)
15
ENE
25
ENE
20
NE
15
NE
15
NNE
5
ENE
10
E
15
ENE
15
E
30
ENE
35
ENE
40
ENE
40
ENE
40
ENE
40
ENE
35
ENE
25
ENE
30
ENE
30
ENE
25
ENE
30
ENE
Wind State
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
10:23AM0.47m
11:48AM0.51m
12:32PM0.55m
1:04PM0.58m
10:27PM0.27m
1:31PM0.61m
11:46PM0.30m
1:55PM0.63m
00:27AM0.33m
2:17PM0.65m
1:04AM0.37m
Low Tide
1:15AM0.09m
2:41AM0.09m
4:16AM0.08m
9:18PM0.23m
5:19AM0.05m
8:24PM0.22m
6:03AM0.02m
8:21PM0.21m
6:39AM-0.00m
8:32PM0.20m
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:11
6:11
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:57
6:55
6:54
6:53
6:53
6:52
 mm
1
2
1
Temp °C
25
25
25
25
26
27
26
27
26
26
26
25
25
26
25
26
26
25
26
26
25
Feels °C
26
25
25
27
28
30
30
29
28
26
24
24
22
23
22
25
26
25
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)
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