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Surf Forecasts:

Castles Beach surf break

Castles Beach surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 1 am Friday 16 Jan 2026 HST
Forecast update in hr  min  s Forecast update imminent
Castles Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castles Beach sea temperature is
25.0° C
 (Which is slightly warmer than usual)

How big are the waves at Castles Beach today?

The current surf forecast for Castles Beach at 7AM is: 1.7m 6s primary swell from a North-northeast direction and 0.4m 8s secondary swell from a East-southeast direction (forecast issued at 01:00am January 16). An open ocean swell of 3.5m 14s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (16 Jan)5.5ft (1.7m)6s
Afternoon (16 Jan)4.5ft (1.3m)6s
Evening (16 Jan)1.5ft (0.4m)8s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Friday
16
Saturday
17
Sunday
18
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM
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 (?)
0.4
ESE
0.4
ESE
0.3
SSW
1.7
NNE
1.4
NE
1.3
ENE
0.4
ESE
0.4
ESE
0.4
ESE
2
NNE
1.3
ENE
0.2
SSW
1.1
E
1.3
ENE
1.4
ENE
1.6
ENE
1.6
ENE
1.7
E
1.8
E
1.9
E
1.9
E
1.8
E
1.6
E
1.5
E
Period(s) (?)881666688813514566666667777
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2224492181381052019201279992070106126165198225267302312280222196
Wind
(km/h)
35
N
35
NNE
35
NNE
35
NE
35
NE
30
NE
30
NE
30
NE
30
NE
30
NE
35
NE
35
ENE
30
E
35
ENE
35
ENE
35
ENE
35
ENE
35
E
35
E
35
E
30
ESE
25
E
25
E
30
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		onononononononononononon
High Tide
/ height (m)
2:18AM
0.85
12:27PM
0.43
2:47AM
0.87
1:10PM
0.45
3:14AM
0.89
1:49PM
0.47
Low Tide
/ height (m)
9:24AM
0.39
7:02PM
0.05
9:39AM
0.37
7:37PM
0.03
9:58AM
0.36
Friday
16
Saturday
17
Sunday
18
Sunrise---7:11-------7:11-------7:11----
Sunset------6:09-------6:09-------6:10-
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C212121212121212121212121222222222323222323232323
Feels °C (?)141414141515151616151414161616151616161717191919
  • 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 Castles Beach 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 Castles Beach at:
surf-forecast.com

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