Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 am 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.4° 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 19 Jul 2026:

  • Most powerful swell: Sunday 26 Jul, 8AM (local time) - 3.5ft (1.1m), 16s period, E swell with 570 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 1.1m 16s and forecast to arrive on Sunday (Jul 26) 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 0.5m 16s period and expected on Monday (Jul 20) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Sun 26th Jul)3.5ft (1.1m) 16s

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


The Lowdown

Alright, Rusty here. Let’s be straight with you: the outlook for the next 16 days at Waimanalo is a long, tough stretch. The forecast is persistently calling it poor surf conditions, and I gotta say, it’s looking like a bit of a write-off for now.

The first recommendation doesn’t come up until Sunday the 19th, and even then, it's not a good one. We’re looking at a 5ft swell from the ENE with a short period of 8 seconds, and a nasty onshore wind blowing at 19 mph. The combined energy is a weak 284, so there’s no punch to it. The water is sitting at 80°, which is pretty much normal for this time of year. This is a beginner-friendly, exposed beach break, but with these conditions – onshore wind and short-period, weak swell – it’s just not going to be surfable. This pattern sticks around.

From Sunday the 19th right through to the end of the month, we’re seeing the same story. The swell hangs around 4ft to 6ft, all from the ENE or NE, with periods that stay short, between 6 and 9 seconds. The wind is locked in from the ENE at 16 to 25 mph, almost always onshore or cross-onshore. Combined energy climbs from the low 200s up to 630 by the 31st, but it’s all wind-driven, messy junk. The break is inconsistent, and with that constant onshore breeze, it’s never going to clean up.

There’s a bit of a change on Sunday the 26th. The swell drops to 4ft, but the period jumps way up to 16 seconds. That’s a very long period groundswell, pushing energy up to 955. The wind backs off a touch to 12 mph, but it’s still onshore. For a beach break, a 16-second period swell like this will likely break too straight and be hard to line up. It’s a tease, but not a session.

The 28th of July sees the combined energy peak at 1230, with a 6ft, 13-second swell from the ENE. The wave energy is strong, but the wind is still a fresh 19 mph onshore. The 29th and 30th are similar, with energy staying in the 900-1000 range, but the persistent onshore wind kills any chance of quality. This setup looks far more interesting for kite surfing than paddle surfing.

The final few days into August, the swell fades to 3ft or less, but the period stays long (16-17 seconds). The wind stays cross-onshore, and the energy drops to around 680-770. There’s no standout session anywhere in the window. The break is fairly consistent for swell, but the wind is the enemy here. It tends not to stay this poor for long, so forecasts can change, but for now, it’s a blank run.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Mon morning. Warm (max 26°C on Mon morning, min 24°C on Sun night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Thu morning. Warm (max 25°C on Wed morning, min 24°C on Wed morning). Mainly strong winds.

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
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)
1.5
ENE
8
1.5
ENE
8
1.6
ENE
8
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.4
ENE
7
1.5
ENE
7
1.6
ENE
7
1.3
ENE
7
1.4
ENE
7
1.7
ENE
6
1.9
ENE
6
1.9
ENE
7
1.9
ENE
7
1.9
ENE
7
2
ENE
7
2.2
ENE
7
2
ENE
8
2
ENE
8
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
284
273
303
220
242
191
176
187
220
141
175
233
284
326
342
326
383
498
428
429
480
Wind (km/h)
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
25
ENE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
40
ENE
35
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
Wind State
on
on
on
on
on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
on
cross-on
on
on
on
on
on
cross-on
High Tide
6:08PM0.51m
9:13AM0.37m
6:04PM0.45m
11:19AM0.44m
4:59PM0.41m
12:21PM0.51m
12:58PM0.56m
1:29PM0.59m
1:57PM0.62m
10:51PM0.28m
Low Tide
11:40AM0.20m
1:25AM0.09m
12:37PM0.29m
2:03AM0.07m
3:19PM0.35m
2:49AM0.05m
3:43AM0.04m
4:39AM0.02m
5:29AM-0.00m
9:26PM0.24m
clear
clear
clear
rain showers
clear
clear
rain showers
clear
rain showers
clear
clear
clear
rain showers
clear
rain showers
clear
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:58
6:00
6:00
6:00
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:14
7:14
7:14
7:13
7:13
7:13
 mm
1
1
2
1
1
1
Temp °C
25
25
25
26
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Feels °C
23
22
23
25
23
23
24
23
23
22
22
23
21
21
21
22
22
22
22
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)
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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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