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Surf Forecasts:

Castles Beach surf break

Castles Beach surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 pm Tuesday 26 May 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
25.0° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Castles Beach this week:

The most powerful waves expected at Castles Beach in the next 16 days are 1.9m 7s and forecast to arrive on Wednesday (May 27) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 11s period and expected on Tuesday (Jun 02) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Wed 27th May)6ft (1.9m) 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

Light rain (total 7mm), mostly falling on Wed morning. Warm (max 24°C on Wed afternoon, min 22°C on Wed morning). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Fri night. Warm (max 24°C on Sat morning, min 23°C on Fri night). Wind will be generally light.

Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
Tue
2
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)
2
ENE
7
1.7
ENE
7
1.8
ENE
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
1.5
ENE
7
0.5
S
20
1.4
ENE
7
1.7
ENE
7
1.4
ENE
7
0.5
S
16
1.1
ENE
8
0.9
ENE
7
0.7
NE
7
0.7
E
8
0.4
SSW
18
0.4
SSW
18
1.3
ENE
7
0.4
SSW
20
0.7
S
19
Wave Graph
Metric surfscale
Energy kJ
428
286
325
316
256
222
210
196
220
294
197
134
143
84
53
63
107
103
153
145
347
Wind (km/h)
35
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
25
ENE
20
E
20
ENE
10
E
15
ENE
15
ENE
20
ENE
20
ENE
25
ENE
15
E
15
ENE
25
ENE
Wind State
on
on
cross-on
cross-on
cross-on
on
cross-on
on
cross-on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
High Tide
11:03PM0.56m
1:21PM0.76m
11:35PM0.52m
1:52PM0.81m
00:06AM0.49m
2:23PM0.84m
00:37AM0.47m
2:55PM0.85m
1:06AM0.46m
3:30PM0.85m
1:34AM0.45m
4:05PM0.84m
2:01AM0.44m
4:42PM0.83m
Low Tide
5:54AM0.13m
7:37PM0.43m
6:19AM0.10m
8:25PM0.42m
6:45AM0.08m
9:07PM0.41m
7:14AM0.06m
9:47PM0.40m
7:44AM0.05m
10:26PM0.40m
8:16AM0.05m
11:08PM0.41m
8:48AM0.06m
clear
rain showers
clear
rain showers
rain showers
rain showers
rain showers
clear
clear
rain showers
part cloud
clear
rain showers
rain showers
clear
part cloud
clear
part cloud
rain showers
clear
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>
7:06
—
7:07
—
—
7:07
—
—
7:07
—
—
7:07
—
—
7:08
—
—
7:08
—
—
7:08
 mm
—
1
—
1
2
1
2
—
—
1
—
—
2
1
—
—
—
—
2
—
—
Temp °C
23
23
24
23
23
23
23
24
24
23
24
24
24
24
24
24
24
24
24
24
25
Feels °C
18
21
20
19
20
20
21
22
21
21
23
24
24
25
24
25
24
23
24
27
26
Swell 1
Height (m)
Direction
Period (s)
0.6
NW
16
0.7
NW
14
0.7
NW
14
0.7
NW
13
0.6
NW
12
0.6
NW
12
0.6
NW
12
0.6
NNE
10
0.6
NNW
11
0.5
NNE
11
0.5
NNW
10
0.7
ESE
8
0.9
NE
7
0.9
ENE
7
0.6
E
8
0.7
E
8
0.8
E
8
0.8
E
8
0.5
S
16
0.6
N
12
0.9
NNW
11
Energy kJ
163
206
195
171
120
118
112
78
87
65
57
58
79
84
46
63
80
76
135
104
202
Swell 2
Height (m)
Direction
Period (s)
0.3
S
15
0.3
S
14
0.3
S
13
0.3
S
13
0.5
N
12
0.4
N
11
0.6
N
11
0.6
NNW
12
0.5
S
19
0.5
S
18
0.5
S
17
0.5
NNW
10
0.7
E
8
0.6
E
8
0.5
N
8
0.5
N
10
0.5
N
10
0.5
N
9
0.4
NNW
9
0.5
S
16
0.7
S
19
Energy kJ
38
36
32
30
73
35
82
90
188
162
147
55
57
43
34
54
49
45
26
132
347
Swell 3
Height (m)
Direction
Period (s)
0.2
NNW
9
0.1
NW
9
0.2
N
12
0.3
N
11
0.3
S
12
0.3
NNE
13
0.3
NNE
13
0.5
S
20
0.4
NNE
10
0.4
NNW
11
0.4
NNE
10
0.5
S
16
0.5
N
8
0.5
N
8
0.5
N
11
0.4
NNE
8
0.4
SSW
18
0.4
SSW
18
0.3
S
21
0.4
SSW
20
0.5
E
8
Energy kJ
8
3
12
23
26
32
34
196
31
46
38
134
37
35
59
19
107
103
78
127
29
Wind waves
Height (m)
Direction
Period (s)
2
ENE
7
1.7
ENE
7
1.8
ENE
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
1.5
ENE
7
1.4
ENE
7
1.4
ENE
7
1.7
ENE
7
1.4
ENE
7
0.9
NE
7
1.1
ENE
8
—
0.7
NE
7
0.7
NE
7
0.6
NE
7
0.6
NE
7
1.3
ENE
7
1.3
ENE
6
1.1
NE
6
Energy kJ
428
286
325
316
256
222
210
181
220
294
197
89
143
—
53
50
33
31
153
145
80
Nearest Offshore or Glassy
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Maili Point
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Sewers (Maili)
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Aligator Rock
HAW - Oahu
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Ala Moana Courts
HAW - Oahu
Abalolo Reef
HAW - Oahu
Ala Moana Courts
HAW - Oahu
Ala Moana Courts
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Ala Moana Courts
HAW - Oahu
Ko Olina Resort
HAW - Oahu
Ala Moana Courts
HAW - Oahu
Abalolo Reef
HAW - Oahu
Ko Olina Resort
HAW - Oahu
Rating
(10 max)
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
2
3
4
3
Distance (km)
45
41
45
41
41
45
41
41
42
41
41
41
18
21
18
18
18
41
18
21
41
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Makaha (Outside)
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Pipeline
Pipeline
Pipeline
Makaha (Outside)
Makaha (Outside)
Kaena Point
Tennis Courts
Abalolo Reef
Lahilahi Point
Rating
(10 max)
3
3
3
2
2
2
3
2
2
3
3
3
3
2
2
3
3
3
4
4
4
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Rating
(10 max)
4
3
3
4
4
4
4
4
2
4
3
3
4
2
2
4
3
3
4
4
4
Header Global
Hell
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Fish Boma
South Africa
Hell
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Dolphin Point
South Africa
White Rock - The Spit
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Fare Left
French Polynesia
Aganoa Beach
Samoa
Fare Left
French Polynesia
Fare Left
French Polynesia
Fare Left
French Polynesia
Fare Left
French Polynesia
Buchupureo
Chile
Ahijedero
Mexico
Tahai
Chile
Hanga Poukura
Chile
Abalolo Reef
United States
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United States
Bali Village
Indonesia
Rating
(10 max)
7
6
6
7
9
6
5
5
5
4
7
6
5
5
4
4
6
7
4
4
4
  • 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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View detailed surf forecast for Castles Beach at:
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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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