Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo Surf Forecast and Surf Report

Issued: 7 am 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
27.0° C
0.4° 

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


Waimanalo surf forecast from 12 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 8PM (local time) - 15ft (4.5m), 11s period, ENE swell with cross-shore winds.
  • Most powerful swell: Sunday 16 Aug, 11PM (local time) - 20ft (6.0m), 11s period, E swell with 8,097 kJ wave energy.
  • Next surfable swell (1★+): Sunday 16 Aug, 8PM (local time) - 15ft (4.5m), 11s 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 Sunday (Aug 16) at 8PM. The primary swell is predicted to be 4.5m and 11s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Waimanalo in the next 16 days are 6.0m 11s and forecast to arrive on Sunday (Aug 16) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Thursday (Aug 13) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 16th Aug)15ft (4.5m) 11s
Best Surf 8PM (Sun 16th Aug)15ft (4.5m) 11s
Most Powerful11PM (Sun 16th Aug)20ft (6.0m) 11s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Tue morning, min 25°C on Tue night). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 50mm), heaviest during Sun morning. Warm (max 27°C on Sun afternoon, min 25°C on Fri night). Winds decreasing (severe gales from the NE on Sat night, moderate winds from the SE by Sun night).

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
!
1
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)
1.3
E
7
1.2
ENE
7
1.3
E
7
1.4
ENE
6
1.4
ENE
6
1.6
ENE
6
1.5
ENE
6
1.6
ENE
6
1.9
ENE
7
1.8
ENE
7
1.8
ENE
8
2
ENE
9
2.5
ENE
12
3
ENE
12
3.5
ENE
12
3.5
ENE
12
3.5
ENE
11
4.5
E
10
2.5
E
8
2.2
ENE
8
2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
181
160
181
165
160
188
170
195
307
330
414
603
1845
2088
3107
3556
2885
3738
1018
646
474
Wind (km/h)
20
ENE
30
ENE
30
E
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
NE
40
NE
40
NE
45
NE
55
NNE
45
ESE
40
SE
25
SE
20
E
30
ENE
30
ENE
Wind State
cross-on
on
cross-on
on
on
on
on
on
on
on
on
on
on
on
on
cross-on
cross
cross
cross-on
cross-on
cross-on
High Tide
2:50PM0.74m
1:43AM0.37m
3:21PM0.72m
2:36AM0.40m
3:49PM0.69m
3:28AM0.42m
4:12PM0.63m
4:22AM0.43m
4:30PM0.58m
5:20AM0.44m
4:40PM0.52m
6:27AM0.44m
4:40PM0.47m
Low Tide
9:16PM0.20m
7:57AM-0.08m
9:41PM0.17m
8:39AM-0.03m
10:07PM0.14m
9:20AM0.03m
10:33PM0.12m
10:00AM0.11m
10:59PM0.09m
10:41AM0.19m
11:25PM0.08m
11:25AM0.27m
11:52PM0.07m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:07
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:02
7:01
7:00
7:00
7:00
6:59
 mm
1
1
2
6
27
6
7
1
1
Temp °C
26
26
25
25
25
26
26
26
25
26
26
25
26
26
25
26
27
27
26
26
25
Feels °C
26
25
23
23
22
25
24
23
23
23
23
22
23
23
21
23
25
26
27
27
24
  • 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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