Castles Surf Break

Lat Long: 26.07° N 127.68° E

Castles Surf Forecast and Surf Report

Issued: 2 am 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Castles sea temperature is
29.1°C
0.9° 

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


Castles surf forecast from 17 Sep 2026:

  • Best quality surf: Friday 18 Sep, 12PM (local time) - 2.5ft (0.8m), 9s period, E swell with cross-offshore winds.
  • Most powerful swell: Sunday 20 Sep, 3AM (local time) - 8ft (2.5m), 14s period, ENE swell with 2,343 kJ wave energy.
  • Next surfable swell (1★+): Friday 18 Sep, 12PM (local time) - 2.5ft (0.8m), 9s 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 Friday (Sep 18) at 12PM. The primary swell is predicted to be 0.6m and 12s period with a secondary swell of 0.8m and 9s. 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 2.5m 14s and forecast to arrive on Sunday (Sep 20) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Sep 21) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Fri 18th Sep)2.5ft (0.8m) 9s
Best Surf12PM (Fri 18th Sep)2.5ft (0.8m) 9s
Most Powerful 3AM (Sun 20th Sep)8ft (2.5m) 14s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Sun afternoon. Warm (max 28°C on Fri morning, min 26°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Wed night. Warm (max 27°C on Mon morning, min 25°C on Tue night). Wind will be generally light.

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
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
2
1
1
0
3
3
2
3
2
2
1
2
2
1
1
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
E
9
0.8
E
9
0.8
E
9
0.8
E
10
0.6
E
15
2.4
ENE
15
2.4
ENE
13
2.3
ENE
12
2.5
ENE
12
2.2
ENE
12
1.9
ENE
12
1.3
ENE
11
1.1
NE
11
0.9
ENE
11
0.7
NE
10
0.6
ENE
10
0.5
NE
9
0.4
NE
10
0.4
ENE
10
0.4
ENE
9
0.4
ENE
9
Wave Graph
Metric surfscale
Energy kJ
119
97
99
117
159
2315
1836
1556
1884
1454
980
386
278
200
100
65
41
23
36
32
34
Wind (km/h)
5
ENE
10
N
15
NE
20
N
25
N
20
N
15
N
25
N
25
N
25
N
20
N
15
NNE
10
NNE
15
NNW
5
SE
5
SE
5
ESE
15
E
10
E
10
ESE
10
ESE
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
glassy
cross-on
cross-on
cross-on
cross-on
High Tide
11:44AM1.49m
10:23PM1.82m
1:24PM1.41m
11:04PM1.72m
4:00PM1.45m
00:32AM1.62m
4:42PM1.56m
2:43AM1.63m
5:05PM1.67m
4:04AM1.75m
5:29PM1.79m
4:59AM1.90m
5:53PM1.91m
Low Tide
4:25PM1.23m
6:04AM0.75m
4:54PM1.34m
7:24AM0.81m
6:55PM1.42m
8:56AM0.78m
9:25PM1.34m
10:03AM0.70m
10:27PM1.17m
10:50AM0.59m
11:09PM0.96m
11:31AM0.50m
11:45PM0.75m
clear
clear
clear
clear
clear
clear
clear
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
thunderstorm
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:16
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:30
6:30
6:29
6:27
6:25
6:24
6:23
 mm
2
1
2
1
Temp °C
28
28
27
28
28
27
28
28
27
27
27
26
27
27
26
27
27
27
27
28
28
Feels °C
32
31
29
30
28
28
30
29
28
26
26
25
28
27
28
29
30
29
31
32
31
  • 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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