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Surf Forecasts:

Castles Beach surf break

Castles Beach surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 1 am Tuesday 20 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
24.6° C
 (Which is normal for this time of year)

How big are the waves at Castles Beach today?

The current surf forecast for Castles Beach at 5AM is: 1.0m 7s primary swell from a East direction (forecast issued at 01:00am January 20). An open ocean swell of 0.6m 12s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (20 Jan)2.5ft (0.8m)7s
Afternoon (20 Jan)3.5ft (1.0m)7s
Evening (20 Jan)3ft (0.9m)7s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Tuesday
20
Wednesday
21
Thursday
22
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
1
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
E
1.1
E
1
E
0.8
E
1
E
1
E
1
E
0.9
E
0.9
E
0.8
E
0.7
E
0.7
E
0.7
E
0.7
E
0.7
E
0.9
NNE
1
NNE
0.9
NNE
0.9
NE
0.6
E
0.6
E
0.9
ENE
0.9
ENE
0.7
ENE
Period(s) (?)777777777888887655577788
Wave
Graph
(?)Metric surfscale
Energy kJ (?)11111094661001031048587715454545453504442383838868858
Wind
(km/h)
15
ESE
10
ESE
5
S
10
W
15
SSE
10
S
10
NNW
5
N
5
W
15
NW
25
N
15
NNE
10
NNE
20
NNE
15
NNE
15
NNE
25
NNE
25
NNE
15
NE
15
NE
10
ENE
10
NE
10
NNE
10
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		crossoffcrosscrosscross-
off		glassoffcross-
off		crosscrosscross-
on		crosscross-
on		cross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross
High Tide
/ height (m)
4:04AM
0.89
3:12PM
0.50
4:27AM
0.86
3:58PM
0.51
4:49AM
0.82
4:53PM
0.52
Low Tide
/ height (m)
8:42PM
0.04
10:42AM
0.32
9:15PM
0.09
11:06AM
0.29
9:48PM
0.16
11:32AM
0.26
Tuesday
20
Wednesday
21
Thursday
22
Sunrise---7:11-------7:09-------7:09----
Sunset------6:12-------6:13-------6:14-
part cloud
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
light rain
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
light rain
Rain (mm)
----------1-----------11
Temp. °C242424232425242423222122222322222222222222232222
Feels °C (?)232424222224242523211821222121201919212222242223
  • 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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