Castles Beach surf break

Castles Beach surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 1 pm Friday 10 Apr 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
24.0° 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 8PM is: 1.7m 7s primary swell from a South direction and 1.1m 7s secondary swell from a South direction, 1.1m 8s secondary swell from a East direction (forecast issued at 01:00pm April 10). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (HST) & DateWave HeightWave Period
Morning (10 Apr)4ft (1.2m)7s
Afternoon (10 Apr)5ft (1.5m)7s
Evening (10 Apr)5.5ft (1.7m)7s

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


Updates in  hr  min  s Forecast update imminent
Friday
10
Saturday
11
Sunday
12
Monday
13
11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
Rating
(10 max)
0
0
1
3
1
2
2
1
0
0
1
1
1
1
1
1
1
1
0
1
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1
E
1.5
S
1.4
S
1.7
S
1
E
1.4
S
1.3
S
0.9
E
0.8
E
0.8
E
0.8
E
0.8
E
0.8
E
0.7
E
0.7
E
0.6
E
0.6
E
0.7
E
0.7
E
0.7
E
0.7
E
0.7
E
0.6
E
0.6
E
Period(s) (?)878786688888888887777777
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1182332172781171561268971727272725554404053525252503737
Wind
(km/h)
40
SSE
40
S
20
SW
15
SSW
10
SSW
10
SSW
15
SSW
10
SSW
10
S
10
S
5
NW
5
N
0
NNW
5
SSE
10
W
15
NNW
0
S
0
SSW
10
N
10
NNW
5
WNW
10
ENE
5
ENE
10
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrossglassglassglassglassoffcross-
off
glassglasscrosscross-
off
cross-
off
cross-
on
oncross-
on
High Tide
/ height (m)
10:59PM
0.71
11:02AM
0.37
11:33PM
0.73
11:54AM
0.46
12:01AM
0.74
Low Tide
/ height (m)
1:45PM
0.28
7:02AM
0.32
3:52PM
0.29
6:44AM
0.29
5:06PM
0.28
6:48AM
0.24
Friday
10
Saturday
11
Sunday
12
Monday
13
Sunrise-------6:15-------6:13-------6:13
Sunset--6:47-------6:49-------6:49-----
mod rain
mod rain
thunderstorm
rain showers
rain showers
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
heavy rain
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
cloud
Rain (mm)
781231-11-111214115433621-
Temp. °C232323242423232425252524232323222121212020202021
Feels °C (?)201923252625242627282928272625232525232122212223
  • 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 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.


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