Castles Surf Break

Lat Long: 26.07° N 127.68° E

Castles Surf Forecast and Surf Report

Issued: 8 am 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's Castles sea temperature is
29.0°C
0.6° 

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


Castles surf forecast from 15 Sep 2026:

  • Best quality surf: Tuesday 22 Sep, 6AM (local time) - 5ft (1.6m), 13s period, NE swell with offshore winds.
  • Most powerful swell: Sunday 20 Sep, 3PM (local time) - 13ft (4.0m), 15s period, ENE swell with 6,224 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 16 Sep, 6AM (local time) - 4ft (1.2m), 10s period with E swell.

Best Forecast Surf Conditions for Castles this week:

The surf forecast for Castles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 16) at 6AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.4m and 15s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Castles in the next 16 days are 4.0m 15s and forecast to arrive on Sunday (Sep 20) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Monday (Sep 21) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Wed 16th Sep)4ft (1.2m) 10s
Best Surf 6AM (Tue 22nd Sep)5ft (1.6m) 13s
Most Powerful 3PM (Sun 20th Sep)13ft (4.0m) 15s

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


Short Range Forecast

Heavy rain (total 21mm), heaviest during Tue morning. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Fri afternoon. Warm (max 28°C on Fri morning, min 26°C on Fri night). Winds increasing (light winds from the NE on Fri morning, fresh winds from the N by Sun afternoon).

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
2
1
0
0
1
0
1
2
1
2
2
3
4
5
4
3
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
E
9
1.3
E
10
1.3
E
10
1.2
E
10
1.1
E
10
0.7
ENE
14
0.7
ENE
14
1
E
9
0.9
E
9
0.8
E
9
0.8
E
9
0.9
E
9
1
E
15
1.5
E
15
2.5
ENE
14
3.5
ENE
15
4
ENE
15
3.5
ENE
14
3
ENE
14
2.5
ENE
14
2
ENE
13
Wave Graph
Metric surfscale
Energy kJ
230
299
307
266
219
213
198
171
135
119
97
126
453
979
2815
5099
6224
5537
3566
2728
1422
Wind (km/h)
10
NE
10
NE
10
NE
10
NNE
15
NE
15
NE
15
NE
15
NE
15
NE
10
NE
15
NNE
15
NNE
15
N
20
NE
20
NNE
25
N
30
N
30
N
30
NNW
35
NNW
25
NNW
Wind State
cross
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
High Tide
9:30AM1.99m
9:10PM2.09m
10:09AM1.81m
9:33PM2.01m
10:50AM1.64m
9:57PM1.92m
11:44AM1.49m
10:23PM1.82m
1:24PM1.41m
11:04PM1.72m
4:00PM1.45m
00:32AM1.62m
4:42PM1.56m
2:43AM1.63m
Low Tide
3:16PM0.80m
3:48AM0.41m
3:41PM0.96m
4:26AM0.52m
4:04PM1.11m
5:09AM0.64m
4:25PM1.23m
6:04AM0.75m
4:54PM1.34m
7:24AM0.81m
6:55PM1.42m
8:56AM0.78m
9:25PM1.34m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
clear
thunderstorm
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:15
6:15
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:34
6:32
6:31
6:30
6:30
6:29
6:27
 mm
3
2
5
2
1
3
1
1
3
2
1
2
Temp °C
28
28
27
28
28
27
27
28
27
28
28
27
28
28
27
28
28
26
27
26
26
Feels °C
31
31
30
31
31
30
30
31
30
31
31
29
31
30
28
28
27
23
24
23
23
  • 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 Surf forecast

The above surf forecast table for Castles provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castles can be found by selecting the local surf guide option on the grey menu. Our Castles 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) 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 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 6 km (4 miles) from the city of Itoman. If you plan a holiday in Okinawa, look for hotels and other accommodation in Itoman. Itoman has rooms for a wide range of budgets as well as car hire and transport links.

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