Waimanu Bay surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 1 pm Sunday 19 Apr 2026 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
25.4° C
(Which is 1.0°C warmer than normal for this time of year)

How big are the waves at Waimanu Bay today?

The current surf forecast for Waimanu Bay at 8PM is: 1.4m 5s primary swell from a East direction and 0.2m 8s secondary swell from a North direction (forecast issued at 01:00pm April 19). An open ocean swell of 0.4m 13s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (19 Apr)3ft (0.9m)6s
Afternoon (19 Apr)4.5ft (1.4m)5s
Evening (19 Apr)4.5ft (1.4m)5s

Table - waves today at Waimanu Bay. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
1
0
1
1
2
2
3
2
Swell
Height Map
Wave Height (m) & direction (?)
1
E
1.3
E
1.5
E
1.4
E
1.3
E
1.1
E
1.1
E
1.1
E
1.2
E
1.1
E
1
E
1.1
E
1
E
0.9
E
1
ESE
1
ESE
1
ESE
0.9
NNE
0.5
NNE
0.8
NNE
1
NNE
1.1
NNE
1.4
NNE
1.4
NNE
Period(s) (?)655557777777778888161616151414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)8174120108831231231231461231021231068812712713093151291457485822754
Wind
(km/h)
20
E
15
ENE
20
E
20
E
20
E
15
E
15
E
15
E
15
ENE
15
ENE
15
ESE
15
E
15
ESE
10
ESE
5
E
5
ENE
5
ENE
10
E
10
E
10
E
15
ESE
10
ESE
10
ESE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
crosscrosscrosscrosscrosscross-
on
cross-
on
crosscrosscrosscrosscrossglasscross-
on
cross-
on
cross-
on
crosscrosscrosscrosscross
High Tide
/ height (m)
5:03PM
0.98
3:59AM
0.50
5:57PM
0.95
4:33AM
0.45
6:58PM
0.90
5:19AM
0.40
Low Tide
/ height (m)
9:38AM
0.01
11:50PM
0.35
10:16AM
0.04
1:07AM
0.38
10:58AM
0.09
2:52AM
0.38
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Sunrise-------6:00-------6:00-------5:58
Sunset--6:42-------6:42-------6:42-----
part cloud
part cloud
thunderstorm
part cloud
cloud
part cloud
clear
clear
part cloud
part cloud
thunderstorm
part cloud
part cloud
part cloud
clear
clear
clear
thunderstorm
thunderstorm
part cloud
clear
clear
clear
clear
Rain (mm)
--1-------1------11-----
Temp. °C262625242323232425252424242323242525242424232324
Feels °C (?)272826252324242527272526262626272828262626252525
  • 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

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 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.


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