Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 7 pm 23 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 24 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 11AM (local time) - 11ft (3.5m), 11s period, ENE swell with onshore winds.
  • Most powerful swell: Wednesday 29 Jul, 8AM (local time) - 13ft (4.0m), 11s period, ENE swell with 3,565 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 11AM (local time) - 11ft (3.5m), 11s 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 3.5m and 11s period. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Waimanalo in the next 16 days are 4.0m 11s and forecast to arrive on Wednesday (Jul 29) 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 0.4m 19s period and expected on Thursday (Jul 23) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Wed 29th Jul)11ft (3.5m) 11s
Best Surf11AM (Wed 29th Jul)11ft (3.5m) 11s
Most Powerful 8AM (Wed 29th Jul)13ft (4.0m) 11s

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


The Lowdown

Alright folks, Rusty here. Let’s break down the surf outlook for Waimanalo. I gotta be honest—this is a tough stretch. The first week and a half looks pretty bleak. The wind is howling from the ENE, blowing straight onshore, and it’s making a mess of the waves. There’s some solid swell in the water, but it’s getting thrashed by these strong winds, so the surf quality is poor for days on end. You’re looking at a big gap of about 10 days where there’s nothing worth paddling out for.

The water temperature is sitting at 80°F, which is pretty normal for this time of year—no big surprise there.

The one real glimmer of hope comes on Wednesday the 29th of July. That afternoon, the wind finally swings around to a light SSW offshore breeze, just 3 mph, glassing things up. The swell drops to 8 ft from the ENE, with a combined wave energy of 949 (moderate energy). The wind is light and offshore, so the sets should be clean. This is the standout window in the whole 16-day forecast. Waimanalo is an exposed beach break, so that long-period energy isn’t ideal for it, but with the wind off and the swell size manageable, it’ll be the best you’ll see.

After that, it’s back into the onshore wind pattern for the rest of the run. The second week sees the swell dropping a bit and the winds staying stubbornly onshore. A few days around the 6th and 7th of August have lighter winds (9 mph from the ENE), and the swell is around 5 ft to 6 ft with periods of 9 to 10 seconds, but the surf condition is still marginal or poor. Nothing to get excited about. The breaks are likely to be a bit of a mess.

So here’s the takeaway: if you’re waiting for a session, circle Wednesday the 29th of July. That’s your day. The rest of the window is a write-off for clean surf at Waimanalo. It’s a tough run for this area, but forecasts can change, and it’s not the end of the world.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly strong winds.

Days 5-7 Weather Summary

Moderate rain (total 13mm), heaviest on Wed morning. Warm (max 26°C on Tue afternoon, min 24°C on Sun night). Mainly fresh winds.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
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
!
!
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
ENE
7
2.2
ENE
7
2
ENE
7
2.2
ENE
7
1.9
ENE
8
2.2
NE
8
2.1
ENE
8
1.9
ENE
8
1
E
14
1.1
E
14
1.2
E
14
1.2
E
13
2
ENE
13
1.7
E
12
1.8
E
13
3
ENE
12
3.5
ENE
11
3
ENE
9
2.4
ENE
8
Wave Graph
Metric surfscale
Energy kJ
316
513
394
485
425
573
504
393
412
472
522
485
1295
869
1021
2139
3034
1297
727
Wind (km/h)
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
25
ENE
30
NE
25
NE
30
NE
35
NNE
30
NE
20
NE
25
SE
15
E
Wind State
cross-on
on
on
cross-on
on
on
on
on
on
on
on
on
on
on
on
on
on
cross
cross-on
High Tide
1:29PM0.59m
1:57PM0.62m
10:51PM0.28m
2:25PM0.63m
00:03AM0.30m
2:52PM0.65m
00:49AM0.31m
3:19PM0.66m
1:31AM0.33m
3:44PM0.66m
2:12AM0.34m
Low Tide
4:39AM0.02m
5:29AM-0.00m
9:26PM0.24m
6:12AM-0.02m
9:10PM0.23m
6:51AM-0.04m
9:22PM0.23m
7:26AM-0.05m
9:42PM0.21m
7:59AM-0.05m
10:06PM0.20m
clear
clear
clear
clear
clear
part cloud
rain showers
clear
clear
part cloud
clear
clear
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
6:01
6:01
6:01
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:13
7:13
7:13
7:12
7:12
7:10
7:10
 mm
1
1
1
2
5
4
6
Temp °C
25
25
25
25
25
25
25
25
25
25
25
25
25
25
26
25
26
26
26
Feels °C
22
21
21
21
22
22
22
22
22
22
23
23
22
25
25
24
28
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)
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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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