Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 7 pm 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
27.0°C
0.1° 

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


Waimanalo surf forecast from 6 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 8PM (local time) - 5ft (1.6m), 10s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 11AM (local time) - 8ft (2.4m), 13s period, ENE swell with 1,752 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 8PM (local time) - 5ft (1.6m), 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 Tuesday (Sep 08) at 8PM. The primary swell is predicted to be 1.6m and 10s period with a secondary swell of 0.7m and 14s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Waimanalo in the next 16 days are 2.4m 13s and forecast to arrive on Monday (Sep 07) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Tuesday (Sep 08) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 8th Sep)5ft (1.6m) 10s
Best Surf 8PM (Tue 8th Sep)5ft (1.6m) 10s
Most Powerful11AM (Mon 7th Sep)8ft (2.4m) 13s

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


The Lowdown

Alright folks, Rusty here. Let's talk about what's cookin' at Waimanalo over the next couple of weeks. I gotta be straight with you, the outlook is pretty grim for a paddle session. The first few days are a write-off.

We're looking at a real flat spell to start. From Sunday, September 6th, right through to Thursday, September 10th, it's all poor surf conditions. The wind is howling out of the east-northeast at 15 to 19 mph, mostly cross-onshore, just chopping everything up. The swell is all short-period windswell, with periods around 7 to 12 seconds, and energy readings are strong but messy, like 1392 on Sunday morning. Not a wave worth paddling for.

Tuesday, September 8th, actually shows a bit of a glimmer. The wind swings south, giving us a clean, cross-off breeze. The swell is around 6 ft to 6 ft from the east-northeast, with a period of 10-11 seconds. It’s a marginal call, energy's still moderate at 885. The problem is, Waimanalo is exposed to swell from the NE and the optimum direction is NE, so this ENE swell is a bit off-angle. It might be worth a look for the die-hards, but I wouldn't bet the farm on it.

From Wednesday, September 9th, we go back into the doldrums. Small, weak, short-period junk. The swell drops below 5 ft, periods tumble to 7-8 seconds, and the wind is back on it. The energy readings drop to the 300s and 200s, which is just weak. For the next ten days or so, it’s a whole lot of nothing. The waves are too small and weak for any real surfing.

Honestly, the only bright spot is that Tuesday the 8th, and even that's a stretch. For a beginner spot, the swell on Tuesday is over 5 ft, which could be a bit much, but with clean conditions it might be okay. But for most of us, this setup looks more interesting for kite surfing than paddle surfing. The wind is consistent and the waves are small and messy.

There's a big gap of poor surf from the 9th right through to the end of the forecast on the 21st. We see a few days of onshore wind and small swell. Nothing to get excited about. I'll keep an eye on it, but right now, save your energy.

Rusty.

Short Range Forecast

Heavy rain (total 25mm), heaviest during Sun night. Warm (max 27°C on Tue morning, min 25°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Tue night. Warm (max 27°C on Tue night, min 25°C on Wed night). Mainly fresh winds.

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
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
2
1
2
2
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
13
2.2
ENE
12
2.1
E
12
1.5
E
12
2.4
ENE
13
1.6
E
12
2.1
ENE
12
1.9
ENE
11
1.7
ENE
10
1.3
ENE
9
0.7
E
13
1.3
ENE
8
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.3
ENE
7
1.4
ENE
12
1.5
ENE
12
1.5
ENE
11
Wave Graph
Metric surfscale
Energy kJ
1605
1382
1269
657
1752
773
1160
885
625
305
169
196
199
236
186
173
530
612
531
Wind (km/h)
25
ENE
30
ENE
25
ENE
25
E
30
E
25
ESE
30
SSE
30
S
20
S
10
SSE
15
ESE
25
ENE
20
ENE
25
E
25
ENE
25
ENE
25
ENE
25
NE
25
ENE
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
High Tide
12:39PM0.68m
11:21PM0.29m
1:14PM0.70m
00:23AM0.35m
1:44PM0.70m
1:12AM0.41m
2:10PM0.68m
1:57AM0.46m
2:33PM0.65m
2:42AM0.50m
2:52PM0.60m
3:26AM0.53m
Low Tide
4:19AM0.02m
8:00PM0.22m
5:27AM-0.01m
7:55PM0.20m
6:20AM-0.02m
8:07PM0.17m
7:05AM-0.01m
8:24PM0.14m
7:47AM0.03m
8:43PM0.10m
8:28AM0.08m
9:04PM0.07m
rain showers
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
rain showers
part cloud
part cloud
clear
part cloud
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:15
6:15
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:42
6:40
6:39
6:38
6:37
6:37
 mm
1
2
11
3
4
1
1
2
1
1
Temp °C
25
26
26
26
26
26
26
27
27
27
26
27
26
26
26
25
25
25
25
Feels °C
23
26
25
26
25
26
26
27
28
30
29
29
28
26
26
24
23
24
24
  • 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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