Castles surfForecast / Okinawa / Japan

information circle12 Day Weather and Surf, issued 2 pm Sunday 28 Dec 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
23.6° C
(Which is 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 Sunday (Jan 04) at 6AM. The primary swell is predicted to be 0.4m and 13s period with a secondary swell of 0.4m and 9s. Another secondary swell of 0.6m and 5s is also forecast. 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 3.0m 8s and forecast to arrive on Wednesday (Dec 31) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Wednesday (Dec 31) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 4th Jan)1.5ft (0.4m) 13s
Best Surf 6AM (Sun 4th Jan)1.5ft (0.4m) 13s
Most Powerful 9PM (Wed 31st Dec)10ft (3.0m) 8s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 53mm), heaviest during Sun night. Warm (max 21°C on Wed morning, min 17°C on Sun night). Winds increasing (light winds from the ENE on Sun afternoon, strong winds from the E by Tue morning).

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Wed afternoon. Warm (max 20°C on Wed afternoon, min 12°C on Fri night). Winds decreasing (strong winds from the NNE on Wed night, moderate winds from the NNE by Thu night).

Sun
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.7
ENE
0.7
ENE
0.7
ENE
0.7
ENE
1.9
SE
2.1
SE
2
SE
2
SE
1.8
SE
2.3
NE
2.5
NE
2.3
NNE
2.1
NNE
1.8
NNE
1.9
NNE
1.9
NNE
1.6
N
1.5
N
1.4
N
0.4
NE
0.4
NE
Period(s) (?)141414136778888888777671313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)17017016115828743242146839860110007006384143353462691641994442
Wind
(km/h)
20
ENE
25
E
20
ESE
30
E
35
ESE
35
E
35
E
35
ENE
30
ENE
35
NNE
45
NNE
35
NNE
35
NNE
25
NNE
40
N
40
N
35
N
30
N
30
N
20
NNE
15
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
1:30AM
1.46
1:33PM
1.67
3:01AM
1.45
2:32PM
1.73
4:25AM
1.51
3:32PM
1.80
5:34AM
1.60
4:32PM
1.88
6:34AM
1.68
5:29PM
1.97
7:23AM
1.75
6:23PM
2.03
8:07AM
1.79
Low Tide
/ height (m)
7:15PM
0.53
7:21AM
0.73
8:28PM
0.39
8:30AM
0.84
9:39PM
0.22
9:41AM
0.89
10:42PM
0.04
10:47AM
0.91
11:41PM
-0.11
11:46AM
0.87
12:34AM
-0.22
12:39PM
0.80
1:22AM
-0.27
Sun
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunrise--7:15--7:15--7:15--7:16--7:16--7:16--7:16
Sunset5:45--5:45--5:46--5:46--5:47--5:49--5:50--
rain showers
heavy rain
light rain
light rain
heavy rain
rain showers
light rain
light rain
rain showers
light rain
cloud
cloud
cloud
light rain
light rain
cloud
rain showers
part cloud
part cloud
cloud
part cloud
Rain (mm)
220211364411---11-1----
Temp. °C181819192018192021201818171715141314141415
Feels °C (?)161516151513131518151012111275477811
  • 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

Latest Updates

submit an eyeball surf report

Quick surf report for Castles:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castles surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


false

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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest