Castles surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 2 pm Sunday 17 May 2026 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
24.1° C
(Which is 1.5°C colder than average for this time of year)

How big are the waves at Castles today?

The current surf forecast for Castles at 9PM is: 2.1m 8s primary swell from a East direction and 0.2m 13s secondary swell from a East-southeast direction (forecast issued at 02:00pm May 17). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (17 May)--
Afternoon (17 May)7ft (2.1m)8s
Evening (17 May)7ft (2.1m)8s

Table - waves today at Castles. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Tue morning. Warm (max 24°C on Tue morning, min 21°C on Sun night). Mainly fresh winds.

Sun
17
Monday
18
Tuesday
19
Wed
20
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
1
2
3
3
3
2
0
0
1
1
0
1
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.1
E
8
2.1
E
8
2
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
9
2.1
E
9
2.1
E
9
2
E
9
2.2
E
9
2
E
9
2
E
9
1.9
E
9
2
E
9
1.9
E
9
1.7
E
9
1.6
E
9
1.6
E
9
1.5
E
9
1.5
E
9
1.4
E
9
1.4
ESE
9
1.3
ESE
9
Wave Graph
Metric surfscale
Energy kJ
616
616
555
612
612
625
640
654
654
594
715
595
595
567
656
575
450
371
399
364
364
318
318
270
Wind (km/h)
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
NE
20
NNE
15
NNW
25
NW
20
NW
20
W
25
WSW
25
WSW
25
WSW
20
WSW
20
SW
15
SW
15
SW
15
SW
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
High Tide
7:54PM2.01m
7:09AM2.18m
8:43PM1.95m
7:51AM2.14m
9:35PM1.86m
8:35AM2.06m
Low Tide
1:16PM-0.18m
1:27AM0.78m
2:02PM-0.19m
2:10AM0.85m
2:49PM-0.12m
2:55AM0.93m
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
cloud
part cloud
part cloud
clear
cloud
part cloud
rain showers
rain showers
clear
clear
clear
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:41
5:41
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:08
7:08
7:09
7:09
1
1
Temp °C
22
23
22
22
22
22
21
22
22
23
22
22
22
22
23
24
24
24
24
23
23
23
22
23
17
19
19
19
19
19
17
19
19
21
20
22
23
21
23
24
23
23
23
23
23
24
21
23
Swell 1
Height (m)
Direction
Period (s)
0.1
SE
13
0.1
SE
14
0.1
SE
13
0.2
ESE
13
0.2
ESE
13
0.3
SE
12
0.1
SE
12
2.2
E
9
2
E
9
2
E
9
1.9
E
9
2
E
9
1.9
E
9
1.7
E
9
1.6
E
9
1.6
E
9
1.5
E
9
1.5
E
9
1.4
E
9
1.4
ESE
9
1.3
ESE
9
Energy kJ
7
7
7
16
16
23
6
715
595
595
567
656
575
450
371
399
364
364
318
318
270
Swell 2
Height (m)
Direction
Period (s)
0.6
ENE
9
0.2
WNW
4
Energy kJ
53
2
Swell 3
Height (m)
Direction
Period (s)
0.2
WNW
4
0.2
WNW
4
Energy kJ
1
1
Wind waves
Height (m)
Direction
Period (s)
2.1
E
8
2.1
E
8
2
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
9
2.1
E
9
2.1
E
9
2
E
9
2
E
9
0.4
NW
3
0.4
WNW
3
0.6
W
4
0.7
W
4
0.6
W
4
0.5
W
4
0.4
W
4
0.4
W
4
0.4
WSW
3
0.4
SW
3
Energy kJ
616
616
555
612
612
625
640
654
654
594
594
3
3
9
15
10
7
4
4
3
2
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
2
2
2
2
2
2
2
2
3
3
3
3
2
2
2
1
2
1
1
1
1
Distance (km)
1080
29
29
29
29
29
29
29
29
29
29
29
0
0
0
16
16
48
16
48
16
16
16
16
Best forecast wave conditions in Okinawa
Rating
(10 max)
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
2
2
2
2
2
2
2
3
Best forecast wave conditions in Japan
Rating
(10 max)
1
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
2
2
2
3
4
3
3
3
Header Global
Rating
(10 max)
4
5
4
4
8
6
4
4
5
7
4
4
5
4
5
5
4
4
4
4
5
5
5
4
  • 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

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.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest