Kahuku Ranch surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 7 pm Saturday 21 Mar 2026 HST
Forecast update in hr  min  s Forecast update imminent
Kahuku Ranch surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahuku Ranch sea temperature is
24.8° C
(Which is normal for this time of year)

How big are the waves at Kahuku Ranch today?

The current surf forecast for Kahuku Ranch at 2AM is: 0.5m 17s primary swell from a South direction and 0.5m 12s secondary swell from a West-northwest direction (forecast issued at 07:00pm March 21). An open ocean swell of 0.7m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (22 Mar)1.5ft (0.5m)16s
Afternoon (22 Mar)1.5ft (0.5m)16s
Evening (22 Mar)2.5ft (0.8m)14s

Table - waves today at Kahuku Ranch. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent
Saturday
21
Sunday
22
Monday
23
Tuesday
24
5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM
Rating
(10 max)
0
1
1
1
1
2
1
1
0
2
1
2
1
1
2
2
1
0
1
1
0
0
1
1
Swell
Height Map
Wave Height (m) & direction (?)
0.5
WNW
0.5
SSW
0.5
SSW
0.5
S
0.5
SSW
0.5
SSW
0.5
SSW
0.5
SSW
0.7
WNW
0.8
WNW
0.8
WNW
0.7
WNW
0.7
WNW
0.7
WNW
0.6
WNW
0.6
WNW
0.6
WNW
0.6
WNW
0.5
NW
0.5
NW
0.4
SW
0.4
NW
0.4
NW
0.4
NW
Period(s) (?)121717171716161615141414141413131313131314121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)81170162153159151144140191236236180173161118116114114827958373736
Wind
(km/h)
10
S
5
SW
5
SW
10
SSE
10
S
15
SE
15
SE
10
SSW
15
W
5
WNW
15
ESE
15
ESE
20
ENE
25
E
10
E
15
E
15
E
25
ENE
15
ENE
15
ENE
15
ENE
20
ENE
15
E
15
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
ononcrosscross-
on
cross-
off
cross-
off
cross-
on
cross-
on
glasscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offoffcross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
5:25AM
0.61
6:36PM
0.91
6:00AM
0.52
7:37PM
0.86
6:42AM
0.43
Low Tide
/ height (m)
12:10AM
0.23
11:32AM
0.04
1:13AM
0.30
12:08PM
0.08
2:44AM
0.35
12:55PM
0.14
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Sunrise-----6:24-------6:24-------6:22--
Sunset6:34-------6:34-------6:34-------
part cloud
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
cloud
thunderstorm
light rain
light rain
light rain
light rain
light rain
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
part cloud
Rain (mm)
-12-11-344421-2441------
Temp. °C252525252525252523222222222323232222222222232424
Feels °C (?)282828282827272724252323212224242220222222222424
  • 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 Kahuku Ranch 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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