Castles Beach Surf Break

Lat Long: 21.42° N 157.74° W

Castles Beach 48 hour detailed Surf Forecast

Issued: 1 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Castles Beach sea temperature is
27.0° C
0.3° 

Castles Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Castles Beach today (16 Aug):

  • Morning surf: Morning surf (16 Aug, local time) - 15ft (4.5m), 10s period with E swell.
  • Afternoon surf: Afternoon surf (16 Aug, local time) - 10ft (3.0m), 9s period with E swell.
  • Evening surf: Evening surf (16 Aug, local time) - 7.5ft (2.3m), 8s period with E swell.

The current surf forecast for Castles Beach at 8AM is: 4.5m 10s primary swell from a East direction and 0.4m 17s secondary swell from a South direction (forecast issued at 01:00am August 16). An open ocean swell of 0.2m 8s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (HST) & DateWave HeightWave Period
Morning (16 Aug)15ft (4.5m)10s
Afternoon (16 Aug)10ft (3.0m)9s
Evening (16 Aug)7.5ft (2.3m)8s

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


Short Range Forecast

Heavy rain (total 74mm), heaviest during Sun morning. Warm (max 26°C on Sun afternoon, min 25°C on Sun morning). Winds decreasing (near gales from the E on Sun morning, moderate winds from the ENE by Tue night).

Sunday
16
Monday
17
Tuesday
18
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 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
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
5
E
10
5
E
10
4.5
E
10
4
E
9
3
E
9
2.5
E
8
2.3
E
8
2.2
ENE
8
2
ENE
8
1.8
ENE
8
1.8
ENE
8
1.8
ENE
7
1.8
ENE
7
1.6
ENE
7
1.5
ENE
7
1.5
ENE
7
1.4
ENE
7
1.3
ENE
7
1.3
ENE
7
1.2
ENE
6
1.3
ENE
6
1.3
ENE
6
1.2
ENE
6
1.1
ENE
7
Wave Graph
Metric surfscale
Energy kJ
4407
4725
4077
2346
1555
957
719
599
484
375
356
337
328
252
215
215
178
141
141
127
130
126
115
111
Wind (km/h)
55
ENE
60
E
55
E
45
SE
35
ESE
25
ESE
25
ESE
30
E
20
ESE
20
E
25
E
30
E
25
ENE
20
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
E
25
E
20
ENE
20
ENE
20
ENE
Wind State
on
on
on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
High Tide
4:57AM0.62m
4:27PM0.68m
5:52AM0.61m
4:33PM0.62m
7:01AM0.60m
4:19PM0.57m
Low Tide
10:29AM0.33m
11:11PM0.19m
11:08AM0.42m
11:37PM0.19m
11:57AM0.50m
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
6:59
6:59
 mm
3
15
31
25
5
4
4
3
2
Temp °C
24
25
25
25
26
26
26
26
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Feels °C
18
19
20
22
25
26
26
26
26
26
25
24
25
25
25
24
25
25
25
25
24
24
25
25
  • 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
How to use the Wavefinder 

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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