Castles Beach Surf Break

Castles Beach Surf Forecast and Surf Report

Lat Long: 21.42° N 157.74° W

Issued: 7 pm 19 Jun 2026 (local time)

Forecast update in  hr  min

Today's Castles Beach sea temperature is
26.0° 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.

Surf Forecasts:

Castles Beach surf forecast from 20 Jun 2026:

  • Most powerful swell: Friday 26 Jun, 5PM (local time) - 7ft (2.2m), 7s period, ENE swell with 542 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 2.2m 7s and forecast to arrive on Friday (Jun 26) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 9s period and expected on Tuesday (Jun 23) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5PM (Fri 26th Jun)7ft (2.2m) 7s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Some drizzle, heaviest during Mon morning. Warm (max 25°C on Fri night, min 24°C on Sat morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Tue morning. Warm (max 25°C on Wed morning, min 24°C on Mon night). Mainly fresh winds.

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Fri
26
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
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
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)
0.4
S
13
0.8
E
5
0.3
S
15
0.3
S
12
0.4
S
13
0.6
E
7
0.4
S
18
0.6
NE
11
0.6
NE
10
0.7
NE
10
1.2
ENE
6
1.3
ENE
6
1.5
ENE
6
1.4
ENE
6
1.6
ENE
6
1.8
NE
6
2.1
ENE
7
2.2
ENE
7
2
ENE
7
1.9
ENE
7
2.2
ENE
7
Wave Graph
Metric surfscale
Energy kJ
53
34
39
25
56
35
98
94
87
96
97
139
170
145
185
253
385
433
360
390
542
Wind (km/h)
20
E
15
E
20
ENE
15
ENE
15
NE
20
NE
15
ENE
20
E
25
ENE
25
ENE
25
ENE
30
ENE
30
ENE
25
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
E
30
E
35
ENE
Wind State
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
on
cross-on
on
on
on
cross-on
cross-on
on
cross-on
on
on
on
High Tide
6:59AM0.42m
7:07PM0.72m
9:04AM0.47m
7:35PM0.65m
10:54AM0.55m
8:01PM0.59m
11:57AM0.64m
8:28PM0.53m
12:38PM0.71m
9:07PM0.49m
1:13PM0.77m
10:17PM0.45m
1:45PM0.81m
Low Tide
2:00AM0.30m
11:46AM0.32m
2:40AM0.26m
12:55PM0.42m
3:17AM0.23m
3:03PM0.51m
3:53AM0.20m
5:49PM0.52m
4:29AM0.17m
7:52PM0.48m
5:06AM0.14m
8:37PM0.45m
5:43AM0.11m
clear
part cloud
clear
part cloud
clear
clear
part cloud
rain showers
clear
part cloud
rain showers
rain showers
rain showers
part cloud
clear
rain showers
thunderstorm
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
5:48
—
—
5:48
—
—
5:48
—
—
5:50
—
—
5:50
—
—
5:50
—
—
5:50
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
—
7:15
—
—
7:15
—
—
7:15
—
—
7:15
—
—
7:15
—
—
7:15
—
—
7:15
 mm
—
—
—
—
—
—
—
1
—
—
1
2
2
—
—
1
2
—
—
—
—
Temp °C
25
25
25
25
24
24
24
24
24
24
24
24
24
25
25
24
25
25
24
25
25
Feels °C
26
26
26
26
25
24
24
24
23
22
23
23
22
24
23
21
22
22
22
23
23
Swell 1
Height (m)
Direction
Period (s)
0.4
S
13
0.3
S
12
0.3
S
12
0.3
NE
8
0.4
NE
8
0.5
NE
8
0.6
NE
11
0.6
NE
11
0.6
NE
10
0.7
NE
10
0.6
NE
10
0.6
NE
10
0.6
N
8
0.5
N
8
0.4
SSW
18
0.3
SSW
16
0.3
SSW
16
0.3
SSW
16
0.3
SSW
14
0.3
SSW
14
0.2
SSW
14
Energy kJ
53
27
25
11
23
29
97
94
87
96
59
73
46
33
102
51
50
49
41
41
19
Swell 2
Height (m)
Direction
Period (s)
0.3
NW
8
0.3
NW
8
0.3
S
15
0.3
S
12
0.4
S
13
0.3
NNW
7
0.4
NNW
7
0.4
NNW
7
0.4
N
7
0.4
N
7
0.6
N
9
0.6
N
8
0.6
NE
10
0.5
NE
9
0.4
N
8
0.3
N
8
0.2
WNW
12
0.1
NW
11
0.2
N
7
0.1
NW
10
0.1
NW
10
Energy kJ
11
11
39
25
56
10
16
15
14
15
56
49
59
41
21
10
14
5
4
4
4
Swell 3
Height (m)
Direction
Period (s)
0.3
S
16
0.2
S
16
0.3
NW
8
0.2
ESE
7
0.3
ESE
7
0.3
S
13
0.4
S
18
0.3
S
12
0.3
S
16
0.2
S
12
0.2
S
11
0.2
S
15
0.3
SSW
19
0.3
SSW
18
0.2
NNE
8
0.2
S
9
0.2
N
8
0.2
SSE
8
0.2
SSE
8
0.1
SE
8
0.1
SW
18
Energy kJ
48
20
10
5
10
31
98
25
46
11
10
17
74
61
7
6
5
7
7
3
12
Wind waves
Height (m)
Direction
Period (s)
0.8
E
5
0.8
E
5
0.7
E
5
0.7
ENE
4
0.5
ENE
4
0.6
E
7
0.6
ENE
4
0.6
E
4
1
E
5
1.1
ENE
5
1.2
ENE
6
1.3
ENE
6
1.5
ENE
6
1.4
ENE
6
1.6
ENE
6
1.8
NE
6
2.1
ENE
7
2.2
ENE
7
2
ENE
7
1.9
ENE
7
2.2
ENE
7
Energy kJ
32
34
25
21
11
35
14
12
57
66
97
139
170
145
185
253
385
433
360
390
542
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Rating
(10 max)
2
1
2
2
2
2
2
1
1
1
1
1
2
2
1
2
2
2
2
2
1
Distance (km)
19
41
18
18
18
18
18
41
41
41
42
41
41
41
45
41
45
45
41
45
47
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Rating
(10 max)
2
2
2
2
2
3
2
2
2
1
1
1
2
2
3
2
2
2
2
2
2
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Infinities
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Rating
(10 max)
3
3
2
3
2
3
3
3
3
3
1
1
3
3
3
3
2
2
3
3
2
Header Global
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Rating
(10 max)
5
8
9
6
4
7
6
6
5
5
5
7
8
6
5
5
5
5
5
5
6
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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