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Surf Forecasts:

Castles Beach surf break

Castles Beach surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 1 pm Thursday 19 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
24.4° 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 7PM is: 0.4m 14s primary swell from a South direction and 0.6m 5s secondary swell from a East-northeast direction, 0.8m 4s secondary swell from a South-southeast direction (forecast issued at 01:00pm March 19). An open ocean swell of 1.1m 11s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (19 Mar)1.5ft (0.5m)14s
Afternoon (19 Mar)1.5ft (0.5m)14s
Evening (19 Mar)1.5ft (0.4m)13s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Thursday
19
Friday
20
Saturday
21
Sunday
22
11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
2
1
1
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.5
S
0.5
S
0.4
S
0.4
S
0.4
S
0.4
S
0.8
SSE
0.6
ENE
0.6
ENE
0.8
S
0.8
S
0.3
S
0.3
S
0.3
S
0.8
S
0.3
S
0.3
S
0.8
S
0.8
S
1.7
NNE
1.6
NNE
1.5
NNE
0.9
NNE
0.6
NE
Period(s) (?)1414141413135765513121251212551110101010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)10097615755553034333233282727332625333369857743215779
Wind
(km/h)
10
SE
20
SE
20
SSE
25
SSE
25
SSE
20
S
20
S
20
S
25
S
25
SSW
20
SSW
15
SSW
15
SSW
15
SSW
15
SW
15
SSW
15
S
25
SSW
30
S
20
SSW
25
S
20
SSW
20
SSW
25
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		crosscrosscrosscrosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		crosscross-
off		crosscross-
off		cross-
off		cross-
off
High Tide
/ height (m)
3:17PM
0.75
2:56AM
0.70
4:00PM
0.79
3:15AM
0.65
4:48PM
0.79
3:31AM
0.59
Low Tide
/ height (m)
8:55AM
0.12
9:13PM
0.26
9:18AM
0.08
9:58PM
0.33
9:45AM
0.06
10:48PM
0.40
Thursday
19
Friday
20
Saturday
21
Sunday
22
Sunrise-------6:35-------6:33-------6:33
Sunset--6:40-------6:42-------6:42-----
thunderstorm
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thunderstorm
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thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
1-2411111111133136214331
Temp. °C242424232323232425252524242323232323232223232323
Feels °C (?)262424222223232425242525252424242422212222232322
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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