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Surf Forecasts:

Waimanu Bay surfForecast / HAW – Big Island / USA

information circle12 Day Weather and Surf, issued 1 pm Tuesday 25 Nov 2025 HST
Forecast update in hr  min  s Forecast update imminent
Waimanu Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimanu Bay sea temperature is
26.1° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Waimanu Bay this week:

The surf forecast for Waimanu Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Nov 27) at 5AM. The primary swell is predicted to be 1.4m and 16s period with a secondary swell of 0.8m and 8s. Another secondary swell of 1.3m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Waimanu Bay in the next 12 days are 1.9m 18s and forecast to arrive on Sunday (Nov 30) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 8s period and expected on Tuesday (Dec 02) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 27th Nov)4.5ft (1.4m) 16s
Best Surf 5AM (Thu 27th Nov)4.5ft (1.4m) 16s
Most Powerful11AM (Sun 30th Nov)6ft (1.9m) 18s

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

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

Short Range Forecast Some drizzle, heaviest during Wed afternoon. Warm (max 25°C on Tue afternoon, min 23°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Fri afternoon, min 23°C on Fri night). Wind will be generally light.

Tue
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
0
0
1
3
1
2
1
0
1
2
2
0
2
1
1
2
2
2
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
E
1
E
0.6
NNW
1
NW
1.3
NNW
1.5
NNW
1.5
NNW
1.3
NNW
1.3
NNW
1.4
NNW
1.3
NNW
0.9
NNW
0.8
NNW
1.6
NW
1.9
NW
1.8
NW
1.8
NW
1.7
NW
1.6
NW
1.4
NW
1.2
NW
Period(s) (?)7718171616151514141312111918171616151413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)12710221656784310981069730701763504235165179822422007159114201171821517
Wind
(km/h)
15
E
15
ESE
15
ENE
15
E
15
ESE
20
E
20
E
25
ESE
20
E
15
E
15
ESE
10
E
15
E
15
E
20
E
15
E
15
E
20
E
20
E
15
ESE
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on		cross-
on		crosscross-
on		crosscrosscross-
on		crosscrosscross-
on		cross-
on		crosscross-
on		cross-
on		crosscrosscrosscrosscross
High Tide
/ height (m)
5:09PM
0.40
7:02AM
0.83
6:50PM
0.39
7:49AM
0.79
9:12PM
0.43
8:40AM
0.75
10:56PM
0.54
9:34AM
0.70
11:56PM
0.67
10:30AM
0.65
12:42AM
0.80
11:24AM
0.60
1:25AM
0.93
12:15PM
0.56
Low Tide
/ height (m)
10:59PM
0.20
2:58PM
0.33
11:47PM
0.28
3:42PM
0.29
1:12AM
0.37
4:18PM
0.23
3:24AM
0.44
4:52PM
0.17
5:20AM
0.45
5:27PM
0.10
6:45AM
0.42
6:03PM
0.04
7:52AM
0.38
Tue
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
Sunrise--6:37--6:37--6:39--6:39--6:39--6:41--6:41
Sunset5:40--5:40--5:40--5:40--5:40--5:40--5:40--
clear
clear
clear
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
Rain (mm)
---1-----------------
Temp. °C252425252425252325252425252325252324252425
Feels °C (?)262526262524242324252426262323232323252424
  • 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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Ben Mondy

Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

Feel that? If you are in the northern hemisphere, you will have had that first bite of winter. The lick of a frost, the chill of a cold offshore breeze and the sound of winter swells pounding the shores. If you are near the mountains, your favourite jackets, gloves, and footwear might get dusted off and prepped for battle. And in that beautiful Venn diagram, you will find PrimaLoft. They have spent over 40 years developing innovative insulations that have powered your warmest winter gear. In t

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waimanu Bay 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 Waimanu Bay at:
surf-forecast.com

Information about the Waimanu Bay Surf forecast

The above surf forecast table for Waimanu Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Waimanu Bay can be found by selecting the local surf guide option on the grey menu. Our Waimanu Bay 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 (Waimanu Bay) 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 Waimanu Bay 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.

Waimanu Bay is 74 km (46 miles) from Hilo. If you plan a vacation in Big Island, look for hotels and other accommodation in Hilo. Hilo has rooms for a wide range of budgets as well as car hire and transport links.

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