Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 am 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.9° C
0.5° 

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


Waimanalo surf forecast from 2 Aug 2026:

  • Most powerful swell: Sunday 2 Aug, 8AM (local time) - 7.5ft (2.3m), 8s period, ENE swell with 758 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 2.3m 8s and forecast to arrive on Sunday (Aug 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 0.2m 12s period and expected on Monday (Aug 03) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Sun 2nd Aug)7.5ft (2.3m) 8s

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


The Lowdown

Alright, let’s get straight into it. The outlook here is a long stretch of pretty ordinary conditions. From Sunday the 2nd of August right through to Monday the 17th, every single session is labelled as poor surf. There’s simply no standout, no hidden gem, no window where it all comes together. The wind is relentless from the ENE, mostly fresh breezes, keeping the surface messy. The swell is coming from the same ENE direction, which is exactly the opposite of what Waimanalo prefers – it likes a NE swell for best shape. So we’re dealing with onshore winds and onshore swell, which is a tough combo.

Water temperature is sitting at 80°F with a tiny anomaly of 0.9°F, so pretty much bang on average for the time of year, no surprises there.

Let’s talk about the waves. On Sunday morning the 2nd, we’ve got 7ft of swell, but it’s short period at 8 seconds and all onshore, so it’s going to be a bumpy, wind-affected mess with moderate energy (856). That’s the biggest size we see, but it’s not surfable quality. By Monday the 3rd, the swell drops to 6ft, still ENE, still onshore. The period stays short, mostly 7 to 8 seconds through the whole forecast, which means weak, disorganised waves. The energy levels bounce around between 88 and 515, so mostly weak to moderate, but it’s all wasted by the wind.

There’s a brief moment on Tuesday the 4th where the period lifts to 11 seconds, with swell around 5ft to 5ft, and the wind eases to a gentle breeze. That’s the closest we get to a clean-ish window. But the swell direction is still ENE, and the break is exposed to that direction, so it’s not offering the ideal shape. The energy is moderate (515 on Tuesday morning). For a beginner-friendly spot like Waimanalo, the size is okay, but the wind locks it out.

From the 7th onward, the swell drops under 5ft and the period gets short again, with winds building back to fresh breeze territory. The 8th and 9th see some cross-onshore wind and lumpy conditions, with swell around 6ft to 6ft, but the period is a whimpy 7 seconds. That’s just not going to produce any decent shape.

The whole second week, from the 10th to the 17th, is more of the same: ENE wind, ENE swell, short period, onshore conditions. The energy is weak to moderate (167 to 364), and the wave comment is always “poor surf conditions.” There’s no point picking a day – it’s a flat, frustrating run.

If you’re a kiter, the consistent wind and moderate swell might make this interesting, but for a surfer, it’s a write-off. The crowds are sometimes an issue at Waimanalo, but honestly, with this forecast, you won’t have to worry about that.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Wed morning, min 25°C on Wed morning). Winds increasing (light winds from the E on Thu morning, fresh winds from the ENE by Fri night).

Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
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)
2.2
ENE
8
2.2
ENE
8
2
ENE
8
1.7
ENE
8
1.6
ENE
8
1.4
ENE
9
1.5
ENE
11
1.4
ENE
11
1.4
ENE
10
1.2
ENE
10
1.1
ENE
9
1.1
ENE
9
1.2
ENE
8
1.2
ENE
8
1
E
5
1
ENE
5
1.4
ENE
6
1.8
E
7
1.9
ENE
7
1.8
ENE
7
1.8
E
7
Wave Graph
Metric surfscale
Energy kJ
642
650
499
361
331
297
515
436
411
275
207
194
181
192
55
56
135
284
342
293
320
Wind (km/h)
35
ENE
35
ENE
30
ENE
25
ENE
25
NE
20
ENE
15
ENE
20
NE
15
ENE
15
ENE
20
NE
15
E
20
ENE
25
ENE
25
ENE
30
ENE
25
ENE
35
ENE
35
ENE
35
ENE
35
ENE
Wind State
on
on
on
on
on
on
on
on
on
on
on
cross-on
cross-on
on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
4:58PM0.57m
5:48AM0.38m
5:09PM0.52m
7:16AM0.41m
5:14PM0.48m
9:27AM0.45m
4:57PM0.44m
11:19AM0.53m
12:18PM0.61m
1:01PM0.68m
Low Tide
10:12AM0.11m
11:50PM0.10m
10:52AM0.19m
00:22AM0.07m
11:44AM0.27m
1:03AM0.04m
1:35PM0.35m
1:59AM0.02m
3:11AM-0.00m
4:25AM-0.03m
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:05
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:08
7:07
7:07
7:07
7:07
7:06
7:05
 mm
Temp °C
25
25
25
25
25
25
25
25
25
26
26
25
26
26
25
25
26
25
26
25
25
Feels °C
22
22
22
25
23
24
26
25
26
27
26
25
27
26
25
24
25
24
23
22
23
  • 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
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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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