Castles surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 8 pm Saturday 16 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
24.4° C
(Which is 1.1°C colder than average for this time of year)

How big are the waves at Castles today?

The current surf forecast for Castles at 4AM is: 2.2m 8s primary swell from a East direction and 0.2m 14s secondary swell from a East-southeast direction (forecast issued at 08:00pm May 16). The wind direction is predicted to be cross-onshore.

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

Mostly dry. Warm (max 24°C on Tue morning, min 22°C on Sat night). Winds decreasing (fresh winds from the ENE on Sat night, light winds from the ENE by Tue afternoon).

Sat
16
Sunday
17
Monday
18
Tuesday
19
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
12 PM
3 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.1
E
8
2.2
E
8
2.3
E
8
2.2
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
9
2
E
9
2
E
8
1.9
E
8
1.9
E
8
1.8
E
8
1.8
E
8
1.7
E
8
1.7
E
8
1.7
E
9
1.6
E
9
1.6
E
9
Wave Graph
Metric surfscale
Energy kJ
572
643
703
671
626
626
616
612
612
597
610
626
641
582
568
513
501
448
439
401
411
430
389
380
Wind (km/h)
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
E
25
E
25
E
30
E
25
E
30
ENE
25
ENE
25
ENE
20
E
20
ENE
15
ENE
10
ENE
10
E
5
ENE
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
7:05PM2.02m
6:28AM2.16m
7:54PM2.01m
7:09AM2.18m
8:43PM1.95m
7:51AM2.14m
Low Tide
00:44AM0.71m
1:16PM-0.18m
1:27AM0.78m
2:02PM-0.19m
2:10AM0.85m
2:49PM-0.12m
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
<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>
7:07
7:08
7:08
7:09
Temp °C
23
22
22
22
22
22
23
23
22
22
22
22
22
22
23
23
23
22
22
22
22
23
24
24
20
18
18
19
18
18
19
20
19
19
19
19
19
19
20
20
21
20
22
22
23
24
26
26
Swell 1
Height (m)
Direction
Period (s)
0.1
SE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.1
SE
13
0.1
SE
14
0.2
ESE
13
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
1.8
E
8
1.7
E
8
1.7
E
8
1.7
E
9
1.6
E
9
1.6
E
9
Energy kJ
8
19
18
18
18
18
7
7
17
24
24
23
6
6
6
6
6
439
401
411
430
389
380
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
10
0.1
N
7
Energy kJ
4
1
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
2.1
E
8
2.2
E
8
2.3
E
8
2.2
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
8
2.1
E
9
2
E
9
2
E
8
1.9
E
8
1.9
E
8
1.8
E
8
Energy kJ
572
643
703
671
626
626
616
612
612
597
610
626
641
582
568
513
501
448
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
2
2
1
2
2
2
1
2
1
2
1
1
1
2
2
1
1
1
1
1
Distance (km)
687
687
29
29
29
29
852
29
29
29
32
29
32
29
32
32
32
29
32
32
32
32
32
32
Best forecast wave conditions in Okinawa
Rating
(10 max)
2
2
2
2
2
2
2
2
2
1
2
1
1
1
2
2
1
2
1
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
1
2
2
2
2
2
1
2
2
2
2
2
1
2
1
1
1
2
2
1
2
2
2
2
Header Global
Rating
(10 max)
5
5
5
6
5
4
4
4
6
9
9
7
4
4
5
7
5
4
5
5
4
4
4
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