Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 pm 10 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.0° 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 11 Jul 2026:

  • Most powerful swell: Sunday 12 Jul, 2PM (local time) - 7ft (2.2m), 8s period, ENE swell with 545 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 2.2m 8s and forecast to arrive on Sunday (Jul 12) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 18s period and expected on Sunday (Jul 12) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Sun 12th Jul)7ft (2.2m) 8s

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


Alright, Rusty here. Let’s have a look at what’s on the table for this stretch.

Right off the bat, I gotta be straight with you – this 16-day run is a tough one. For Waimanalo, we’re looking at a pretty bleak stretch of surf. The first proper recommendation doesn’t even appear until July 10th, and even then, it’s a struggle. The whole period is dominated by onshore winds, mostly from the ENE, blowing straight into the beach and making a mess of things. The swell is not cooperating either, coming from the ENE and NE with short periods of 6 to 8 seconds, which means weak, choppy, and lumpy waves.

Starting Friday afternoon, July 10th, we’ve got poor surf conditions with a 6 ft swell from the ENE and a period of just 7 seconds. The combined energy is 348 (moderate), but that ENE wind is blowing at 22 mph right onshore, so it’s going to be a bumpy, blown-out mess. This vibe continues straight through Saturday and Sunday the 11th and 12th, with similar sized swell but winds cranking up to 25 mph on Sunday morning. The wave energy jumps up a bit (531) but with that wind, it’s all junk.

By Monday the 13th and Tuesday the 14th, the swell drops a touch to around 5 to 6 ft, but the onshore wind just won’t quit. It’s still poor quality. Mid-week, Wednesday the 15th, the swell dips to 4 ft, and we even get some rain showers. It’s just not worth paddling out.

Now, into the second week – from July 16th onward – the wind swings a bit more cross-onshore, but it’s still fresh and messy. The wave comment mentions “fresh cross-onshore and lumpy” or “strong cross-onshore and messy.” The swell stays between 5 ft and 7 ft, with periods still short (6 to 7 seconds), and combined energy hits 477 on July 18th. That’s moderate wave energy, but with the wind and short period, it’s a chop-fest. Just not good for a clean ride.

Later on, around July 22nd, we see a weird little spike in period – 14 seconds – but the swell drops to 2 ft to 2 ft. That long period is interesting for a reef or point break, but at this size and with stiff onshore wind, it’s barely a ripple. Combined energy is 357 (moderate), but it’s too small to do anything with.

Honestly, there’s no standout in this whole 16-day window. The best I could say is maybe early on July 11th, but with 22 mph onshore winds, you’d be fighting a losing battle. For a break that’s fairly consistent and exposed to the NE, this is a real bummer. It’s the kind of pattern where the wind just ruins what could be a fun summer swell. If you’re a kite surfer, the strong cross-onshore conditions and moderate swell energy (477 to 531) might look interesting, but for a paddle surfer, you’re better off waiting for the next change.

Water temp is sitting at 79°F on July 10th, with a zero anomaly – so it’s about average for the time of year. No surprises there.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 25°C on Sat morning, min 24°C on Fri afternoon). Mainly strong winds.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Wed afternoon. Warm (max 25°C on Tue afternoon, min 24°C on Mon afternoon). Mainly fresh winds.

Fri
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
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
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
ENE
7
2.1
ENE
7
2
ENE
7
1.9
ENE
7
2
ENE
7
2.2
ENE
8
2.1
ENE
8
2.1
ENE
8
1.9
ENE
8
1.7
ENE
8
1.7
ENE
7
1.5
ENE
8
1.5
ENE
7
1.1
NE
7
1.1
ENE
7
1.4
NE
7
1.4
NE
7
1.4
E
6
1.4
ENE
7
1.4
ENE
6
1.8
ENE
7
Wave Graph
Metric surfscale
Energy kJ
348
420
400
355
373
531
501
501
411
336
286
257
250
112
125
199
199
158
166
150
306
Wind (km/h)
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
15
E
30
ENE
35
ENE
35
ENE
40
ENE
Wind State
on
on
on
on
cross-on
on
on
on
on
on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
on
cross-on
cross-on
High Tide
1:52PM0.71m
10:48PM0.30m
2:34PM0.75m
00:11AM0.30m
3:15PM0.77m
1:17AM0.31m
3:55PM0.76m
2:18AM0.32m
4:33PM0.73m
3:19AM0.32m
5:06PM0.69m
4:23AM0.32m
Low Tide
5:35AM-0.11m
9:11PM0.25m
6:26AM-0.14m
9:32PM0.24m
7:16AM-0.15m
10:02PM0.22m
8:04AM-0.15m
10:36PM0.21m
8:49AM-0.11m
11:10PM0.19m
9:34AM-0.06m
11:44PM0.16m
10:16AM0.02m
clear
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clear
part cloud
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rain showers
rain showers
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rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:56
5:56
5:56
5:56
5:56
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:15
7:15
7:15
7:15
 mm
2
2
1
Temp °C
24
24
25
25
24
24
24
24
24
24
24
24
25
25
25
25
25
25
25
25
25
Feels °C
20
21
23
23
21
21
20
20
20
21
21
22
23
23
24
24
24
24
24
24
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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