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Surf Forecasts:

Waimanalo surf break

Waimanalo surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 pm Sunday 18 Jan 2026 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
24.9° 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 Monday (Jan 19) at 5PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 1.2m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Waimanalo in the next 12 days are 1.9m 16s and forecast to arrive on Sunday (Jan 18) at 8PM. 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 13s period and expected on Thursday (Jan 22) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Mon 19th Jan)3ft (0.9m) 13s
Best Surf11AM (Tue 20th Jan)3.5ft (1.0m) 16s
Most Powerful 8PM (Sun 18th Jan)6ft (1.9m) 16s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 24°C on Mon afternoon, min 22°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Thu morning. Warm (max 23°C on Wed afternoon, min 19°C on Thu afternoon). Winds increasing (light winds from the NE on Wed afternoon, strong winds from the NNE by Thu afternoon).

Sun
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
1
2
2
3
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.9
NW
1.6
NW
1.1
NW
0.9
NW
0.8
NW
1
NW
1
NW
0.8
NW
1.1
NW
1.1
NW
0.9
NW
0.6
NW
1.9
N
0.9
NNW
1.1
NNW
1.2
NNW
1.2
NNW
1
NNW
0.9
NNW
0.8
NNW
0.5
NW
Period(s) (?)16151413121615131614141471312131211111014
Wave
Graph
(?)Metric surfscale
Energy kJ (?)17151020500286178492410250539466331153335277341499412256183135103
Wind
(km/h)
20
E
20
ESE
15
E
5
SSW
5
W
10
S
5
SSW
5
N
15
NE
20
NNE
25
NNE
30
NNE
40
NNE
20
NE
30
NE
30
NE
25
NE
30
NE
25
ENE
15
ENE
15
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
off		glasscross-
off		glassglassoncross-
on		oncross-
on		cross-
on		onononononononon
High Tide
/ height (m)
4:01AM
0.65
2:23PM
0.29
4:25AM
0.64
3:09PM
0.30
4:47AM
0.62
4:00PM
0.31
5:05AM
0.59
4:59PM
0.31
5:21AM
0.54
6:12PM
0.32
5:32AM
0.49
7:58PM
0.35
5:35AM
0.44
Low Tide
/ height (m)
8:13PM
-0.11
10:27AM
0.17
8:47PM
-0.10
10:53AM
0.15
9:20PM
-0.07
11:19AM
0.12
9:53PM
-0.01
11:47AM
0.09
10:28PM
0.06
12:18PM
0.06
11:08PM
0.15
12:54PM
0.02
12:01AM
0.25
1:40PM
-0.00
Sun
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunrise--7:09--7:09--7:09--7:09--7:09--7:09--7:09
Sunset6:10--6:12--6:12--6:13--6:14--6:14--6:15--
cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
part cloud
cloud
light rain
light rain
light rain
part cloud
cloud
cloud
cloud
clear
clear
clear
part cloud
Rain (mm)
----------233--------
Temp. °C232323242424242323232222202122222222222223
Feels °C (?)202021242423232422221919141918191819192024
  • 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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Latest Updates

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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waimanalo surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Waimanalo at:
surf-forecast.com

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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