Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 7 pm 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.9° 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 17 Aug 2026:

  • Most powerful swell: Sunday 16 Aug, 11PM (local time) - 7ft (2.1m), 8s period, ENE swell with 560 kJ wave energy.

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 2.1m 8s and forecast to arrive on Sunday (Aug 16) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Sunday (Aug 16) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Sun 16th Aug)7ft (2.1m) 8s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Sun night. Warm (max 27°C on Sun night, min 24°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Sat afternoon, min 24°C on Thu night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
ENE
8
1.6
ENE
8
1.6
ENE
7
1.4
ENE
7
1.3
ENE
6
1.2
ENE
7
1.3
ENE
5
1.1
ENE
7
0.8
E
8
0.7
E
8
0.7
E
8
0.6
E
8
1
NE
7
0.7
ENE
7
0.7
ENE
7
1.2
ENE
7
1.1
ENE
6
1.3
ENE
6
1.6
E
7
Wave Graph
Metric surfscale
Energy kJ
533
300
252
183
139
135
98
118
84
63
57
43
104
55
55
117
101
130
222
Wind (km/h)
20
E
30
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
20
NE
20
ENE
15
NE
20
NE
15
NE
15
ENE
20
ENE
20
ENE
20
ENE
25
ENE
20
ENE
Wind State
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
on
on
on
on
on
on
cross-on
on
on
cross-on
on
cross-on
High Tide
6:27AM0.44m
4:40PM0.47m
8:02AM0.45m
4:17PM0.43m
10:23AM0.47m
11:48AM0.51m
12:32PM0.55m
1:04PM0.58m
10:27PM0.27m
Low Tide
11:25PM0.08m
11:25AM0.27m
11:52PM0.07m
12:27PM0.33m
00:26AM0.08m
1:15AM0.09m
2:41AM0.09m
4:16AM0.08m
9:18PM0.23m
thunderstorm
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
6:59
6:58
6:58
6:57
6:55
6:54
 mm
4
Temp °C
27
25
25
25
25
25
25
25
25
25
25
25
25
25
26
26
26
27
26
Feels °C
29
25
25
24
23
23
24
25
25
26
26
26
26
28
28
27
28
27
26
  • 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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