Waimanu Bay surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 7 am 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 4PM is: 1.5m 5s primary swell from a East direction (forecast issued at 07:00am April 19). An open ocean swell of 0.3m 12s is not directed at the surf break, a second open ocean swell of 0.3m 14s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

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
Wed
22
5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
1
0
2
2
Swell
Height Map
Wave Height (m) & direction (?)
0.9
E
0.8
E
0.9
E
1.2
E
1.6
E
1.5
E
1.3
E
1.1
E
1.1
E
1.1
E
1.2
E
1.2
E
0.4
NW
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
Period(s) (?)77646657775511777888816161615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)73566653152133861231241246065481231068812712713093153291463491
Wind
(km/h)
15
ESE
15
E
20
ENE
15
E
20
E
15
E
20
E
15
E
15
ESE
15
E
15
ENE
15
ENE
15
E
15
E
15
ESE
10
ESE
5
ESE
5
E
10
ENE
10
ENE
10
E
10
E
10
E
10
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on
cross-
on
cross-
on
crosscrosscrosscrosscrosscross-
on
cross-
on
crosscrosscrosscrosscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross
High Tide
/ height (m)
3:25AM
0.55
5:03PM
0.98
3:59AM
0.50
5:57PM
0.95
4:33AM
0.45
6:58PM
0.90
Low Tide
/ height (m)
9:38AM
0.01
11:50PM
0.35
10:16AM
0.04
1:07AM
0.38
10:58AM
0.09
Sunday
19
Monday
20
Tuesday
21
Wed
22
Sunrise-6:01-------6:00-------6:00------
Sunset----6:42-------6:42-------6:42---
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
thunderstorm
thunderstorm
part cloud
part cloud
clear
Rain (mm)
-------------------11---
Temp. °C232526262524242323242525252424232424252525242424
Feels °C (?)242626272625252424252727272626252727272728262626
  • 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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