Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 7 am 29 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 29 Jul 2026:

  • Most powerful swell: Sunday 2 Aug, 2AM (local time) - 8ft (2.5m), 8s period, ENE swell with 979 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 0.4m 15s period and expected on Wednesday (Jul 29) at 2PM.

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

Alright, this is Rusty. Let's have a look at what's on the table for Waimanalo over the next couple of weeks.

To be straight with you, the entire 16-day window is a bit of a bust. There isn't a single standout session in the whole run. The forecast is dominated by strong, onshore to cross-onshore trade winds mushing up anything that tries to form. You'll see a lot of "poor surf conditions" in the notes, and that's the reality here. The water temp is sitting at 80°F, which is pretty much bang on average for this time of year, so no surprises there.

The first sniff of anything rideable is on Wednesday, July 29th. Waimanalo is an exposed beach break, and this NE swell is hitting it. Wednesday morning we've got a 7ft swell from the ENE, period around 10 seconds. That's a moderate groundswell, with a combined energy of 733 (moderate wave energy). The problem is the wind is a light cross-onshore from the N at 6 mph, which is that "light cross-onshore with small wind ripples" look. It's not clean, and the rating is a 1/10, so it's really just a marginal, choppy option. The afternoon cleans up a touch with a NE wind switching to onshore, but the swell drops to 6ft and the period shortens to 9 seconds. Not great.

Thursday the 30th through to the end of the first week is a write-off. The wind cranks up from the E and ENE, hitting 19 to 25 mph, turning the surface into a lumpy, choppy mess. Swell sticks around the 5ft to 8ft range, but with periods as short as 7 seconds and those strong winds, it's just blown-out slop. The combined energy climbs to over 1000 (strong wave energy) on August 1st, but with 28 mph cross-onshore winds, it's more of a kite-surfing setup than a paddle-surfing one. For a beginner spot, anything over 5ft can be tricky, and when it's over 8ft and messy, it's only for the experts who don't mind a beating.

The second week doesn't offer any relief. From August 4th onwards, the trades keep blowing, the swell drops into the 3ft to 6ft range, and the period stays short. There's a brief moment on the morning of Tuesday, August 4th, where the swell period jumps to 11 seconds, giving a bit more energy (524 combined, moderate wave energy), but the wind is still a cross-onshore from the E, and the whole thing is rated marginal at best. The rest of the week is a mix of "poor" and "marginal" with fresh to moderate breezes ruining any chance of a clean face.

So, what's the best on offer? It's a really low bar, but if you're desperate, Wednesday morning, July 29th is your only shot. The swell is 7ft from the ENE at 10 seconds, and the wind is the lightest it will be all week. It's not good, but it's the least bad. After that, you're looking at a solid 13-day gap right through to the end of the forecast on August 13th with nothing worth paddling out for.

This is one of those stretches where the forecast is consistently poor, and it's pretty normal for the area when the trades lock in. It won't stay this way forever, but for now, I'd give the board a rest and wait for a change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Wed afternoon, min 24°C on Fri night). Winds increasing (light winds from the NE on Wed afternoon, strong winds from the ENE by Fri night).

Days 4-6 Weather Summary

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

Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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
ENE
10
1.7
NE
9
1.6
ENE
8
1.7
ENE
8
1.4
ENE
8
1.7
E
7
1.9
E
7
2
E
7
2.5
E
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2.2
ENE
8
2.1
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.5
ENE
11
1.4
ENE
11
1.4
ENE
10
Wave Graph
Metric surfscale
Energy kJ
733
470
344
310
226
303
397
435
745
850
893
979
758
642
574
404
379
370
524
452
388
Wind (km/h)
10
N
10
NE
15
E
15
E
30
ENE
25
ENE
30
ENE
40
ENE
40
ENE
45
ENE
40
ENE
40
ENE
40
ENE
35
ENE
30
ENE
25
ENE
25
NE
20
ENE
10
E
15
ENE
15
ENE
Wind State
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
on
on
on
on
on
cross-on
cross-on
on
on
High Tide
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
5:48AM0.38m
5:09PM0.52m
7:16AM0.41m
5:14PM0.48m
Low Tide
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
10:52AM0.19m
00:22AM0.07m
11:44AM0.27m
1:03AM0.04m
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:03
6:03
6:03
6:03
6:03
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:10
7:09
7:09
7:08
7:08
7:07
7:07
 mm
Temp °C
26
27
27
26
26
26
26
25
25
25
25
25
25
25
25
25
25
25
25
26
25
Feels °C
28
30
30
27
26
26
24
22
22
21
21
21
21
21
22
24
23
24
26
28
27
  • 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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