Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 pm 27 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.5° C
0.2° 

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


Waimanalo surf forecast from 28 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 11AM (local time) - 7ft (2.1m), 10s period, ENE swell with glassy winds.
  • Most powerful swell: Tuesday 28 Jul, 2PM (local time) - 7ft (2.2m), 13s period, E swell with 1,667 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 11AM (local time) - 7ft (2.1m), 10s period with ENE swell.

Best Forecast Surf Conditions for Waimanalo this week:

The surf forecast for Waimanalo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 11AM. The primary swell is predicted to be 2.1m and 10s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Waimanalo in the next 16 days are 2.2m 13s and forecast to arrive on Tuesday (Jul 28) 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 0.4m 14s period and expected on Monday (Jul 27) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Wed 29th Jul)7ft (2.1m) 10s
Best Surf11AM (Wed 29th Jul)7ft (2.1m) 10s
Most Powerful 2PM (Tue 28th Jul)7ft (2.2m) 13s

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


The Lowdown

Yo, it’s Rusty.

Alright, let’s be straight up: the next 16 days at Waimanalo are a tough watch. The forecast is pretty much a long stretch of poor surf conditions, with only one real window that looks worth paddling out for. You’ll have to wait through a lot of choppy, wind-affected days to get to it.

The swell hangs around in the 5ft to 8ft range for most of the period, but the problem is the wind. From the get-go on Monday 27 July, it’s a strong onshore NE breeze at 19 mph, and that sets the tone for the whole run. The combined swell energy is moderate to strong (967 to 983), but with that wind, it’s just messy.

The standout is Wednesday morning, 29 July. That’s your window. The wind goes glassy, swinging to a light southerly at 3 mph, and the swell is a solid 7ft from the ENE with a 10-second period. The combined energy is moderate (821), and the water temp is a comfortable 80°F, which is about average for late July. The waves should be clean and well-shaped, with that long period pushing in some proper groundswell. It’s a fairly consistent spot, but crowds are possible here, so get there early. This is your best session in the whole outlook.

After that, it’s back to the grind. From Wednesday afternoon through to the end of the first week, the wind picks up again, cross-onshore and onshore, with gusts up to 28 mph by Saturday 1 August. The swell gets bigger, hitting 8ft, but with the wind howling and the period dropping to 7-8 seconds, it’s just a lumpy, choppy mess. The combined energy stays in the moderate range, but it’s not surfable.

The second week, from 3 August onward, is more of the same. The wind stays strong from the ENE, mostly cross-onshore, and the swell fluctuates between 3ft and 8ft. The periods are short, mostly 7-9 seconds, so the waves are weak and wobbly. The combined energy drops to 280-463, which is weak to moderate. There’s nothing to get excited about there.

On Tuesday 11 August, the wind finally eases to a light ESE breeze at 6 mph, and the swell drops to 5ft from the NE with a 9-second period. The combined energy is weak (294), and the conditions are only marginal. It’s a small, cleanish day, but nothing special.

So, to sum it up: Wednesday morning, 29 July, is your one and only standout. Glassy, clean, and a solid 7ft. Everything else is a long, frustrating gap of onshore wind and poor surf. Hang tight, check the charts, and hope something changes.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Mon night. Warm (max 27°C on Wed morning, min 25°C on Mon afternoon). Winds decreasing (fresh winds from the NE on Mon night, calm by Wed morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Thu afternoon, min 24°C on Sat night). Winds increasing (moderate winds from the E on Thu afternoon, strong winds from the ENE by Sat morning).

Mon
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
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
1
3
1
2
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)
1.4
E
13
1.8
E
13
2.1
E
13
2.2
E
13
2.2
ENE
11
2.1
ENE
10
1.7
ENE
9
1.7
ENE
8
1.5
E
8
1.3
E
8
1.8
E
7
1.9
E
7
2.1
E
7
2.4
E
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.3
ENE
8
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
690
1144
1510
1584
1111
821
449
361
272
201
333
397
465
670
735
787
827
745
705
569
Wind (km/h)
30
NE
30
NE
25
NNE
30
NNE
15
N
5
S
5
SE
15
SE
20
ENE
25
E
25
ENE
35
ENE
40
ENE
40
ENE
45
ENE
40
ENE
40
ENE
40
ENE
35
ENE
35
ENE
Wind State
on
on
on
cross-on
cross-on
glassy
cross
cross-off
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
on
on
cross-on
High Tide
2:52PM0.65m
00:49AM0.31m
3:19PM0.66m
1:31AM0.33m
3:44PM0.66m
2:12AM0.34m
4:07PM0.66m
2:57AM0.35m
4:27PM0.64m
3:46AM0.36m
4:44PM0.61m
4:42AM0.37m
4:58PM0.57m
Low Tide
9:22PM0.23m
7:26AM-0.05m
9:42PM0.21m
7:59AM-0.05m
10:06PM0.20m
8:32AM-0.04m
10:31PM0.18m
9:04AM-0.01m
10:57PM0.16m
9:37AM0.05m
11:22PM0.13m
10:12AM0.11m
11:50PM0.10m
clear
thunderstorm
thunderstorm
clear
rain showers
part cloud
clear
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:03
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:12
7:10
7:10
7:09
7:09
7:08
7:08
 mm
1
1
1
1
Temp °C
25
25
25
26
25
27
27
26
26
27
26
26
25
25
25
25
25
25
25
25
Feels °C
24
24
26
26
25
31
30
29
26
26
26
23
22
22
21
21
22
21
22
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 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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