Waimanalo surf break

Waimanalo surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 pm Monday 09 Mar 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
24.6° C
(Which is normal for this time of year)

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 Wednesday (Mar 11) at 11PM. The primary swell is predicted to be 0.9m and 8s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Waimanalo in the next 12 days are 1.7m 9s and forecast to arrive on Monday (Mar 09) 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 1.8m 6s period and expected on Friday (Mar 13) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 11th Mar)3ft (0.9m) 8s
Best Surf 8PM (Sun 15th Mar)2ft (0.6m) 10s
Most Powerful 8PM (Mon 9th Mar)5.5ft (1.7m) 9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 33mm), heaviest during Wed afternoon. Warm (max 24°C on Tue morning, min 23°C on Mon afternoon). Winds increasing (light winds from the E on Mon night, fresh winds from the S by Wed morning).

Days 3-6 Weather Summary Heavy rain (total 121mm), heaviest during Sat night. Warm (max 25°C on Thu afternoon, min 22°C on Fri afternoon). Winds increasing (light winds from the S on Thu night, strong winds from the SSW by Sat morning).

Mon
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
0
1
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
1
Swell
Height Map
Wave Height (m) & direction (?)
1.8
E
1.6
E
1.4
ENE
1.3
ENE
1.2
ENE
1
ENE
1
ENE
0.9
ENE
0.8
ENE
0.8
ENE
0.7
ENE
0.5
N
0.4
N
0.7
E
0.7
N
0.8
N
0.8
N
0.7
N
0.6
N
0.6
NW
0.5
NW
Period(s) (?)999988888881212812121111111010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)577440326276217151147112838163734460148180160116858250
Wind
(km/h)
10
E
10
ESE
20
S
15
S
30
S
35
S
30
SSW
20
SSW
25
S
25
S
25
S
30
S
35
SSW
45
SSW
45
SSW
40
SSW
45
SW
40
SSW
30
SW
15
SW
20
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offoffoffoffoff
High Tide
/ height (m)
9:07PM
0.37
11:41PM
0.41
12:25AM
0.45
12:53AM
0.49
11:21AM
0.17
1:16AM
0.52
12:08PM
0.22
1:36AM
0.55
12:45PM
0.27
1:54AM
0.56
1:22PM
0.34
Low Tide
/ height (m)
11:51AM
0.02
1:13PM
0.05
3:54PM
0.05
8:49AM
0.13
5:11PM
0.01
8:05AM
0.13
5:57PM
-0.02
7:59AM
0.11
6:36PM
-0.04
8:06AM
0.08
Mon
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Sunrise--6:43--6:43--6:41--6:41--6:39--6:39--6:37
Sunset6:37--6:37--6:37--6:38--6:38--6:38--6:39--
part cloud
thunderstorm
thunderstorm
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
-22--581153118101765491222016
Temp. °C232324242424242424252423232324252524242323
Feels °C (?)232423222322212324242522192019212121222324
  • 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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