Castles Beach Surf Break

Lat Long: 21.42° N 157.74° W

Issued: 1 pm 13 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castles Beach sea temperature is
25.7° C

Normal for this time of year

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


Castles Beach surf forecast from 14 Jun 2026:

  • Most powerful swell: Sunday 14 Jun, 2PM (local time) - 2ft (0.6m), 19s period, SSW swell with 271 kJ wave energy.

Best Forecast Surf Conditions for Castles Beach this week:

The most powerful waves expected at Castles Beach in the next 16 days are 0.6m 19s and forecast to arrive on Sunday (Jun 14) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 10s period and expected on Wednesday (Jun 17) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Sun 14th Jun)2ft (0.6m) 19s

Table - best surf conditions forecast for Castles Beach over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 6mm), mostly falling on Sun morning. Warm (max 24°C on Sat afternoon, min 24°C on Sat afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 25°C on Wed afternoon, min 24°C on Tue afternoon). Wind will be generally light.

Sat
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
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
Wave
Height (m)
Direction
Period (s)
0.3
SSW
21
0.5
SSW
20
0.5
SSW
19
0.6
SSW
18
0.6
SSW
17
0.5
SSW
16
1
ENE
11
0.5
S
15
0.9
ENE
9
0.9
ENE
9
0.4
SSW
14
0.4
SSW
14
0.6
S
17
0.6
S
16
0.6
S
15
0.5
S
14
0.5
S
14
0.4
S
13
0.4
S
13
0.4
S
13
0.3
S
12
Wave Graph
Metric surfscale
Energy kJ
90
218
212
249
235
149
214
115
127
135
62
61
215
186
155
107
103
55
54
53
26
Wind (km/h)
15
NE
15
NE
20
ENE
20
NE
20
ENE
25
ENE
20
NE
20
E
15
NE
15
ENE
10
E
10
E
15
E
15
E
15
E
15
ENE
15
ENE
15
E
15
ENE
15
ENE
15
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
cross-on
cross-on
on
on
on
on
on
on
on
on
cross-on
on
cross-on
High Tide
2:21PM0.95m
00:27AM0.47m
3:06PM0.98m
1:17AM0.45m
3:51PM0.99m
2:07AM0.44m
4:35PM0.96m
3:01AM0.43m
5:18PM0.92m
4:03AM0.42m
5:57PM0.86m
5:19AM0.41m
6:34PM0.79m
6:59AM0.42m
Low Tide
9:17PM0.41m
7:15AM-0.05m
10:08PM0.39m
8:00AM-0.06m
10:56PM0.38m
8:44AM-0.03m
11:44PM0.37m
9:29AM0.02m
00:31AM0.35m
10:13AM0.10m
1:16AM0.33m
10:57AM0.20m
2:00AM0.30m
11:46AM0.32m
clear
clear
rain showers
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:48
5:48
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:13
7:14
7:14
7:14
7:14
7:15
7:15
7:15
 mm
2
1
3
Temp °C
24
24
24
24
24
24
24
24
24
24
24
24
25
25
24
25
24
24
24
24
24
Feels °C
23
24
23
24
23
22
23
23
24
24
24
25
26
26
25
26
25
25
24
25
25
Swell 1
Height (m)
Direction
Period (s)
0.5
E
7
0.5
SSW
20
0.5
SSW
19
0.6
SSW
18
0.6
SSW
17
0.5
SSW
16
0.5
SSW
16
0.5
S
15
0.9
ENE
9
0.5
S
14
0.8
ENE
6
0.7
ENE
6
0.8
ENE
8
0.6
S
16
0.6
S
15
0.5
S
14
0.5
S
14
0.4
S
13
0.5
NE
8
0.4
S
13
0.3
S
12
Energy kJ
24
218
212
249
235
149
142
115
127
104
41
27
78
186
155
107
103
55
31
53
26
Swell 2
Height (m)
Direction
Period (s)
0.3
SSW
21
0.4
ENE
7
0.3
S
12
0.3
S
12
0.2
NNW
7
0.2
ENE
11
0.2
NNW
7
0.3
NW
12
0.5
S
14
0.3
NW
11
0.5
NE
8
0.5
NE
8
0.6
S
17
0.4
NW
10
0.4
NE
10
0.4
NE
9
0.4
NE
9
0.3
NW
9
0.4
S
13
0.4
NE
8
0.3
NE
8
Energy kJ
90
15
27
27
5
13
5
22
107
19
35
33
215
35
32
28
27
13
54
15
9
Swell 3
Height (m)
Direction
Period (s)
0.3
S
13
0.3
S
13
0.2
NNW
8
0.2
NNW
8
0.2
S
12
0.2
NNW
7
0.2
S
12
0.2
N
7
0.3
NW
11
0.3
N
10
0.4
SSW
14
0.4
SSW
14
0.3
NW
10
0.3
N
10
0.4
NW
10
0.4
NW
10
0.3
NW
9
0.2
S
19
0.3
NW
9
0.3
S
16
0.2
S
16
Energy kJ
32
30
6
6
11
5
11
4
19
17
62
61
16
17
25
24
13
28
12
48
20
Wind waves
Height (m)
Direction
Period (s)
0.4
NE
3
0.6
ENE
4
0.9
ENE
4
1
ENE
5
1.1
ENE
5
1
ENE
5
1
ENE
11
1.2
ENE
5
0.9
ENE
9
0.8
ENE
9
0.8
E
5
0.7
E
5
0.7
ENE
5
0.8
ENE
5
0.6
ENE
4
0.6
ENE
4
0.8
ENE
4
Energy kJ
4
11
30
44
62
49
214
69
135
98
32
25
26
25
14
15
22
Nearest Offshore or Glassy
Rating
(10 max)
3
3
4
4
4
3
3
3
3
3
2
3
3
3
3
2
2
2
2
2
1
Distance (km)
18
18
18
18
18
41
18
18
18
18
18
18
18
18
18
18
18
41
18
18
41
Best forecast wave conditions in Oahu
Rating
(10 max)
4
4
4
4
4
4
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
4
3
3
4
3
3
4
4
3
4
2
3
2
2
3
3
Header Global
Rating
(10 max)
5
4
5
9
5
5
5
5
4
4
4
5
6
5
9
9
9
5
6
4
5
  • 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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Information about the Castles Beach Surf forecast

The above surf forecast table for Castles Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castles Beach can be found by selecting the local surf guide option on the grey menu. Our Castles Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Castles Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Castles Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Castles is 2 km (1 miles) from Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.

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