Castles surfForecast / Okinawa / Japan

information circle12 Day Weather and Surf, issued 8 am Thursday 20 Nov 2025 JST
Forecast update in hr  min  s Forecast update imminent
Castles surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castles sea temperature is
27.3° C
(Which is 2.0°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Castles this week:

The surf forecast for Castles over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Nov 24) at 3AM. The primary swell is predicted to be 1.4m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Castles in the next 12 days are 1.8m 8s and forecast to arrive on Sunday (Nov 23) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Tuesday (Nov 25) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Mon 24th Nov)4.5ft (1.4m) 9s
Best Surf 3AM (Mon 24th Nov)4.5ft (1.4m) 9s
Most Powerful12PM (Sun 23rd Nov)6ft (1.8m) 8s

Table - best surf conditions forecast for Castles over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 22°C on Fri morning, min 19°C on Thu morning). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Mon afternoon, min 18°C on Tue night). Winds increasing (light winds from the NE on Sun night, strong winds from the NNW by Tue afternoon).

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.4
N
0.7
E
0.7
E
1.3
ENE
1.5
ENE
2.1
NE
1.7
ENE
1.9
ENE
1.5
ENE
1.7
E
1.7
E
1.4
E
1.4
E
1.3
E
1
E
0.9
ESE
0.9
ESE
1.1
E
1
E
1.1
N
1
E
Period(s) (?)899887777889999111010101010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2177478206257416310387231346409292291264151180159245200249196
Wind
(km/h)
30
NNE
25
NNE
20
NNE
25
NNE
30
NNE
30
NNE
25
NE
30
NE
25
ENE
25
ENE
20
ENE
20
NE
20
NNE
20
NNE
20
NNE
35
N
45
NNW
40
N
35
NNE
30
NNE
30
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscrosscross-
on
crosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross
High Tide
/ height (m)
6:26PM
1.97
7:54AM
1.77
6:54PM
1.97
8:28AM
1.74
7:22PM
1.96
9:04AM
1.70
7:52PM
1.92
9:40AM
1.65
8:25PM
1.87
10:20AM
1.60
9:05PM
1.80
11:04AM
1.56
9:54PM
1.71
Low Tide
/ height (m)
12:44PM
0.85
1:17AM
0.08
1:15PM
0.89
1:50AM
0.06
1:46PM
0.93
2:23AM
0.08
2:18PM
0.98
2:58AM
0.12
2:52PM
1.01
3:35AM
0.19
3:32PM
1.03
4:17AM
0.28
4:20PM
1.04
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Sunrise6:50--6:50--6:52--6:52--6:52--6:54--6:54--
Sunset-5:37--5:37--5:37--5:37--5:37--5:37--5:37-
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
part cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
Rain (mm)
---------------------
Temp. °C192021222221222222232323232422222119202020
Feels °C (?)141517181816171717202121222321171311131414
  • 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 12 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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