Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 pm 14 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.1° 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 15 Jul 2026:

  • Most powerful swell: Sunday 19 Jul, 5AM (local time) - 6.5ft (2.0m), 8s period, ENE swell with 449 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 2.0m 8s and forecast to arrive on Sunday (Jul 19) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 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 5AM (Sun 19th Jul)6.5ft (2.0m) 8s

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


The Lowdown

Alright folks, Rusty here. Gotta be straight with you – the next couple of weeks are looking pretty grim for a decent paddle. The data is telling me that, for the period starting now and running through the next 16 days, there’s just nothing on offer that’s worth getting excited about. We’re looking at a solid 16-day stretch of poor surf conditions at Waimanalo.

The first recommendation doesn’t even pop up because the quality is so low. The water temp is sitting at 79°, which is bang on average for this time of year.

Diving into the daily grind: Starting Tuesday the 14th, we've got a 4ft swell from the NE, but it’s a weak, short-period 7-second windswell, and the wind is onshore at 12 mph. The combined energy is a weak 219. It’s just messy. That pattern basically holds through the rest of the week. Wednesday the 15th, Thursday the 16th, Friday the 17th... all the same story. Cross-onshore to onshore winds, mediocre 3ft to 4ft swell, and energy levels staying in the 100s. The setup is more interesting for kite surfing than paddle surfing.

The weekend of the 19th and 20th doesn’t offer any relief. Saturday the 18th sees a jump in wind to 22 mph, making for a lumpy, choppy mess with a 5ft swell. Sunday the 19th has a slightly better-looking 5ft swell from the east, but the 19 mph cross-onshore wind ruins it. The energy is climbing into the moderate range (362), but it’s useless.

The second week is more of the same grimness. The wind just doesn’t let up. From Monday the 21st through to Wednesday the 29th, we’re looking at persistent onshore to cross-onshore breezes, mostly in the 16-22 mph range. The swell height fluctuates between 4ft and 6ft, and the period stays short. The energy levels do get quite strong by the 25th and 26th, hitting 508 and 655, but the wind is hammering it. The only standout is a bit of a tease on Monday the 27th, where the swell period suddenly jumps to 14-15 seconds – that’s a very long period groundswell. The combined energy is a massive 741, but it’s only a 3ft swell. That long period on a beach break with a 16 mph onshore wind is going to be a straight, close-out mess. No good.

So, bottom line: there are no good surf options in this 16-day window. The winds are consistently strong and onshore, and the swell quality is just poor. At Waimanalo, a blank run like this is more normal for the area when the trade winds get locked in. For now, keep the board in the car and wait for the forecast to change.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Wed morning. Warm (max 25°C on Tue afternoon, min 24°C on Tue night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 25°C on Fri afternoon, min 24°C on Fri night). Mainly fresh winds.

Tue
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
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)
1.3
NE
7
1.4
NE
7
1.1
ENE
7
0.9
ENE
7
1.2
NE
7
1.2
E
6
1.3
ENE
6
1.4
ENE
6
1.1
E
7
1.3
ENE
7
1.6
ENE
7
1.4
E
6
1.4
E
6
1.8
E
7
1.6
E
8
1.5
ENE
8
1.3
ENE
8
1.1
E
8
1.4
ENE
7
1.2
E
7
1.3
ENE
7
Wave Graph
Metric surfscale
Energy kJ
176
199
124
89
156
96
139
150
104
138
209
146
166
324
333
284
223
138
203
142
149
Wind (km/h)
20
NE
15
E
15
E
15
E
20
E
25
E
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
35
ENE
30
ENE
30
NE
25
ENE
25
ENE
25
NE
20
ENE
20
ENE
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
on
on
cross-on
cross-on
on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
High Tide
3:55PM0.76m
2:18AM0.32m
4:33PM0.73m
3:19AM0.32m
5:06PM0.69m
4:23AM0.32m
5:34PM0.63m
5:36AM0.33m
5:55PM0.57m
7:07AM0.34m
6:08PM0.51m
9:13AM0.37m
6:04PM0.45m
11:19AM0.44m
Low Tide
10:36PM0.21m
8:49AM-0.11m
11:10PM0.19m
9:34AM-0.06m
11:44PM0.16m
10:16AM0.02m
00:18AM0.13m
10:57AM0.11m
00:51AM0.11m
11:40AM0.20m
1:25AM0.09m
12:37PM0.29m
2:03AM0.07m
clear
clear
rain showers
rain showers
rain showers
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:58
5:58
5:58
5:58
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
7:14
7:14
 mm
2
1
2
Temp °C
25
25
25
25
25
25
25
25
25
25
25
25
25
25
24
25
24
25
25
25
25
Feels °C
24
25
26
26
25
25
24
24
24
24
24
24
23
23
21
22
22
24
24
23
25
  • 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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