Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 1 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
27.2°C
0.3° 

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


Waimanalo surf forecast from 14 Sep 2026:

  • Most powerful swell: Friday 18 Sep, 2AM (local time) - 6.5ft (2.0m), 9s period, ENE swell with 603 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 9s and forecast to arrive on Friday (Sep 18) at 2AM. 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 15s period and expected on Sunday (Sep 20) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Fri 18th Sep)6.5ft (2.0m) 9s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Sun afternoon, min 25°C on Sun afternoon). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 9mm), mostly falling on Thu night. Warm (max 27°C on Fri afternoon, min 25°C on Wed night). Mainly fresh winds.

Sun
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
NE
9
0.9
NE
9
0.8
NE
8
1.2
NE
8
1
ENE
5
0.6
NNE
8
0.4
E
12
1.1
ENE
5
1.3
ENE
6
1.4
ENE
6
1.6
ENE
6
2
ENE
7
2.1
ENE
7
2
ENE
9
1.9
ENE
8
1.7
ENE
8
1.8
E
7
1.8
E
7
1.7
E
8
1.9
E
7
Wave Graph
Metric surfscale
Energy kJ
112
123
82
196
51
39
44
62
97
131
191
389
482
603
461
383
358
329
383
355
Wind (km/h)
20
NE
20
ENE
20
ENE
20
NE
20
ENE
20
ENE
25
ENE
25
ENE
30
NE
30
NE
30
NE
35
ENE
30
NE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
30
ENE
35
ENE
Wind State
on
on
on
on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
High Tide
3:19PM0.50m
4:57AM0.55m
3:24PM0.45m
5:47AM0.53m
3:20PM0.41m
6:53AM0.51m
2:37PM0.40m
8:54AM0.49m
10:52AM0.51m
11:47AM0.54m
Low Tide
9:48PM0.03m
10:35AM0.25m
10:11PM0.03m
11:26AM0.30m
10:35PM0.05m
12:57PM0.34m
11:02PM0.07m
11:41PM0.10m
1:18AM0.13m
3:40AM0.12m
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
clear
part cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:35
6:34
6:34
6:32
6:31
6:30
6:30
 mm
2
5
2
Temp °C
26
25
25
26
25
26
26
26
26
26
26
26
26
26
26
27
26
26
26
26
Feels °C
26
25
24
26
25
27
26
26
26
25
26
26
25
26
26
25
25
26
24
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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Quick surf report for Waimanalo:

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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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