Kapoho Bay surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 1 am Friday 20 Mar 2026 HST
Forecast update in hr  min  s Forecast update imminent
Kapoho Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kapoho Bay sea temperature is
24.5° C
(Which is normal for this time of year)

How big are the waves at Kapoho Bay today?

The current surf forecast for Kapoho Bay at 9AM is: 0.7m 13s primary swell from a South direction and 0.8m 7s secondary swell from a East-southeast direction (forecast issued at 01:00am March 20). An open ocean swell of 1.0m 10s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (20 Mar)2.5ft (0.7m)13s
Afternoon (20 Mar)2ft (0.6m)13s
Evening (20 Mar)2ft (0.6m)12s

Table - waves today at Kapoho 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)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
2
2
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.7
S
0.7
S
0.7
S
0.7
S
0.7
S
0.7
S
0.6
S
0.6
S
0.6
S
0.6
S
0.4
SSW
0.4
SSW
0.4
SSW
0.5
S
0.5
S
0.4
SSW
0.7
SE
0.5
SSW
0.5
SSW
0.5
SSW
0.4
SSW
0.4
SSW
0.4
SSW
0.9
SE
Period(s) (?)1313131313131212121219191812121871717171616167
Wave
Graph
(?)Metric surfscale
Energy kJ (?)17116816816616316111311010610212411911069681035616616616289848377
Wind
(km/h)
15
SSW
20
SSW
20
S
20
S
20
S
25
S
25
S
20
S
20
SSW
15
SSW
15
SSW
20
SSW
20
S
20
S
15
SSW
15
NW
10
NW
15
NNW
10
NNW
5
N
15
S
20
SSW
25
SSW
15
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscrosscrosscross-
on
cross-
on
cross-
on
crosscrosscrosscrosscrosscrosscrosscrosscross-
off
offcross-
off
cross-
off
glasscross-
on
crosscrosscross
High Tide
/ height (m)
3:52AM
0.84
4:38PM
0.96
4:20AM
0.76
5:21PM
0.96
4:49AM
0.67
6:11PM
0.94
Low Tide
/ height (m)
10:01PM
0.17
10:05AM
0.03
10:47PM
0.23
10:33AM
0.03
11:37PM
0.30
11:05AM
0.05
Friday
20
Saturday
21
Sunday
22
Sunrise---6:22-------6:22-------6:20----
Sunset------6:30-------6:30-------6:30-
cloud
clear
clear
clear
clear
clear
clear
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
thunderstorm
cloud
cloud
light rain
cloud
cloud
cloud
cloud
cloud
Rain (mm)
---------------1--1-----
Temp. °C242323242525252424242424252525242424232324242423
Feels °C (?)242323252524252525252525252526252625242624242224
  • 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 Kapoho 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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