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Surf Forecasts:

Castles Beach surf break

Castles Beach surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 7 pm Friday 13 Mar 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 12AM is: 1.9m 7s primary swell from a South direction and 0.5m 8s secondary swell from a East direction (forecast issued at 07:00pm March 13). An open ocean swell of 0.4m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & DateWave HeightWave Period
Morning (14 Mar)2.5ft (0.8m)9s
Afternoon (14 Mar)4.5ft (1.3m)7s
Evening (14 Mar)4.5ft (1.3m)8s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Friday
13
Saturday
14
Sunday
15
Monday
16
5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM
Rating
(10 max)
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2
S
2
S
1.9
S
1.5
S
2.2
S
0.8
E
1.2
SSW
1.3
SSW
0.7
E
1.2
SSW
1.3
SSW
0.6
E
0.5
E
0.5
E
0.5
E
1.3
SSW
0.7
S
0.7
S
0.6
S
0.5
S
0.5
E
0.5
E
0.5
E
0.5
E
Period(s) (?)777889879889999777778888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)35636637626262711017817774155181563939381624744322136363535
Wind
(km/h)
40
SSW
40
SSW
40
SW
40
SW
30
SW
35
SW
35
SW
35
SW
35
SW
30
SW
35
SW
40
SW
40
SW
40
SSW
40
SW
35
SW
30
SW
20
SW
15
SW
10
SW
10
SW
10
WSW
10
SW
10
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
12:44AM
0.77
11:59AM
0.42
1:08AM
0.80
12:40PM
0.48
1:30AM
0.82
1:19PM
0.56
Low Tide
/ height (m)
4:49PM
0.22
7:56AM
0.33
5:45PM
0.18
7:54AM
0.30
6:29PM
0.16
8:02AM
0.26
Friday
13
Saturday
14
Sunday
15
Monday
16
Sunrise-----6:39-------6:39-------6:37--
Sunset6:38-------6:39-------6:39-------
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
Rain (mm)
118115111522211--11-------
Temp. °C232323232424252324242424242425252524232323232526
Feels °C (?)191919192221222022222221202122222324242525252627
  • 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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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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