Waimanalo surf break

Waimanalo surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 7 am Wednesday 03 Dec 2025 HST
Forecast update in hr  min  s Forecast update imminent
Waimanalo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimanalo sea temperature is
25.9° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Waimanalo this week:

The surf forecast for Waimanalo over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 04) at 5AM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.2m and 7s. Another secondary swell of 0.5m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Waimanalo in the next 12 days are 1.8m 15s and forecast to arrive on Friday (Dec 05) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Wednesday (Dec 10) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 4th Dec)3.5ft (1.1m) 12s
Best Surf 5PM (Thu 4th Dec)4.5ft (1.3m) 14s
Most Powerful 5PM (Fri 5th Dec)6ft (1.8m) 15s

Table - best surf conditions forecast for Waimanalo over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 25°C on Thu afternoon, min 23°C on Wed morning). Winds increasing (calm on Wed morning, fresh winds from the ENE by Fri night).

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Mon afternoon, min 24°C on Sat morning). Mainly fresh winds.

Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
1
1
1
3
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
3
Swell
Height Map
Wave Height (m) & direction (?)
1.1
NW
1.1
NW
1.1
NW
0.8
NW
1.3
NW
1.5
NW
1.7
NNW
1.8
NNW
1.4
NNW
1.4
NNW
1.3
NNW
1.2
NNW
1.1
NNW
0.9
NNW
1.4
E
1.3
E
1.3
E
0.6
NW
1
E
0.6
NNW
1.1
NW
Period(s) (?)12121216141416151313131213138871481715
Wave
Graph
(?)Metric surfscale
Energy kJ (?)37937330928773680413731567680722569413361285245191186130115188503
Wind
(km/h)
5
SSE
5
ESE
5
E
10
E
5
SSW
30
E
15
ESE
30
ENE
30
E
25
E
20
ENE
20
E
25
ENE
25
E
30
ENE
30
ENE
25
E
20
E
20
E
10
ESE
15
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on
cross-
on
cross-
on
glasscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
off
High Tide
/ height (m)
12:01PM
0.37
2:56AM
0.77
12:36PM
0.34
3:43AM
0.77
1:11PM
0.31
4:32AM
0.76
1:46PM
0.29
5:22AM
0.73
2:17PM
0.27
6:11AM
0.68
6:59AM
0.63
4:38PM
0.22
Low Tide
/ height (m)
8:30AM
0.26
7:02PM
-0.16
9:33AM
0.25
7:43PM
-0.17
10:36AM
0.25
8:26PM
-0.16
11:44AM
0.24
9:11PM
-0.12
1:02PM
0.23
9:56PM
-0.08
10:42PM
-0.01
3:34PM
0.19
11:29PM
0.06
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Sunrise6:52--6:52--6:54--6:54--6:54--6:56--6:56--
Sunset-5:46--5:47--5:47--5:47--5:47--5:47--5:49-
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
cloud
part cloud
Rain (mm)
---------------------
Temp. °C242424242524252524242424242424242525242524
Feels °C (?)262525252626252421232323232322212223242526
  • 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 12 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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