Waimanu Bay surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 1 am Friday 20 Feb 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
24.5° C
(Which is normal for this time of year)


How big are the waves at Waimanu Bay today?

The current surf forecast for Waimanu Bay at 4AM is: 2.4m 9s primary swell from a East-northeast direction and 0.4m 15s secondary swell from a North-northeast direction, 0.4m 12s secondary swell from a Northwest direction (forecast issued at 01:00am February 20). The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (20 Feb)7ft (2.1m)9s
Afternoon (20 Feb)8ft (2.5m)9s
Evening (20 Feb)6.5ft (2.0m)9s

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

Updates in  hr  min  s Forecast update imminent
Friday
20
Saturday
21
Sunday
22
11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM
Rating
(10 max)
1
2
1
2
0
0
2
1
2
3
2
2
2
2
2
2
2
2
2
2
1
1
1
2
Swell
Height Map
Wave Height (m) & direction (?)
2.5
ENE
2.4
ENE
2.5
ENE
2
E
2.2
E
2.5
ENE
2.2
E
2
E
1.9
E
1.9
E
1.8
E
1.7
E
1.7
E
1.7
E
1.6
E
1.5
E
1.4
E
1.3
E
1.2
E
1.1
E
1.1
E
0.9
E
1
E
1.3
NNE
Period(s) (?)9999999999991099999999998
Wave
Graph
(?)Metric surfscale
Energy kJ (?)117195910576808051256840680614614551502513497441375327276234192184127145212
Wind
(km/h)
25
E
25
E
25
E
25
E
30
E
25
E
20
E
20
E
20
E
15
E
15
ESE
10
ESE
10
ENE
10
ENE
10
ENE
5
E
5
ESE
5
SSE
5
SW
5
WSW
10
NW
10
NW
10
NW
5
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscrosscrosscross-
on
cross-
on
crosscross-
on
crosscrosscrosscrosscross-
on
cross-
on
cross-
on
crosscrossglassglassglasscross-
on
crosscrossglass
High Tide
/ height (m)
4:30AM
0.81
5:15PM
0.72
4:53AM
0.73
6:13PM
0.72
5:15AM
0.65
7:26PM
0.72
Low Tide
/ height (m)
10:15PM
0.22
10:57AM
0.15
11:01PM
0.31
11:27AM
0.14
11:57PM
0.40
12:03PM
0.15
Friday
20
Saturday
21
Sunday
22
Sunrise---6:48-------6:48-------6:47----
Sunset------6:22-------6:23-------6:23-
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
part cloud
thunderstorm
clear
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
-------------1-1-----111
Temp. °C212121222424232222222122232323232222222224242422
Feels °C (?)181918202122222122232123242424252424242425242524
  • 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

Latest Updates

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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