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Surf Forecasts:

Shacks surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 7 am Sunday 18 Jan 2026 HST
Forecast update in hr  min  s Forecast update imminent
Shacks surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Shacks sea temperature is
25.1° C
 (Which is slightly warmer than usual)

How big are the waves at Shacks today?

The current surf forecast for Shacks at 1PM is: 1.4m 7s primary swell from a East direction (forecast issued at 07:00am January 18). An open ocean swell of 1.3m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (18 Jan)4.5ft (1.3m)7s
Afternoon (18 Jan)4.5ft (1.4m)7s
Evening (18 Jan)4.5ft (1.4m)7s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
18
Monday
19
Tuesday
20
Wed
21
5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
E
1.3
E
1.3
E
1.4
E
1.4
E
1.4
E
1.4
E
1.5
E
1.5
E
1.5
E
1.5
E
1.5
E
1.6
E
1.6
E
1.6
E
1.6
E
1.5
E
1.5
E
1.5
E
1.5
E
1.5
E
1.4
E
1.4
E
1.4
E
Period(s) (?)777777777777777888888878
Wave
Graph
(?)Metric surfscale
Energy kJ (?)128154145179183183183210216217223230269269276283256256256263256217212221
Wind
(km/h)
20
NE
15
ENE
20
ENE
20
E
20
ENE
15
ENE
15
E
20
ENE
15
E
15
E
15
ENE
20
E
20
E
20
E
20
E
10
E
15
E
10
SE
10
SE
15
SE
15
ESE
15
ESE
10
ESE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		onononononononononon
High Tide
/ height (m)
3:37AM
1.04
3:08PM
0.55
4:06AM
1.05
3:44PM
0.58
4:34AM
1.04
4:23PM
0.60
Low Tide
/ height (m)
10:19AM
0.26
8:59PM
0.03
10:46AM
0.24
9:33PM
0.05
11:12AM
0.22
10:08PM
0.09
Sunday
18
Monday
19
Tuesday
20
Wed
21
Sunrise-6:56-------6:56-------6:56------
Sunset----6:02-------6:02-------6:04---
part cloud
part cloud
cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
cloud
cloud
clear
cloud
part cloud
cloud
cloud
clear
clear
clear
part cloud
part cloud
Rain (mm)
------------------------
Temp. °C222223232323222322232323232323222322232424232222
Feels °C (?)181921202021212020202121212121212121222223232222
  • 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

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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 Shacks 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.

View detailed surf forecast for Shacks at:
surf-forecast.com

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