Castles surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 2 am Monday 11 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
24.2° 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 8AM is: 1.7m 9s primary swell from a East direction and 0.4m 12s secondary swell from a Southeast direction (forecast issued at 02:00am May 11). The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (11 May)5ft (1.6m)9s
Afternoon (11 May)4.5ft (1.4m)9s
Evening (11 May)5.5ft (1.7m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 81mm), heaviest during Mon afternoon. Warm (max 24°C on Tue night, min 21°C on Mon afternoon). Wind will be generally light.

Monday
11
Tuesday
12
Wednesday
13
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
6 PM
9 PM
Rating
(10 max)
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
1
2
2
2
1
1
2
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.9
E
8
1.8
E
9
1.7
E
9
1.6
E
9
1.5
E
9
1.4
ESE
9
1.4
E
9
1.7
E
9
2.2
ESE
9
2.2
ESE
9
2
ESE
9
1.8
ESE
9
1.7
E
9
1.6
ESE
9
1.4
E
9
1.3
E
9
1.3
E
9
1.2
E
9
1.2
E
10
1.2
E
10
1
E
10
1
E
10
0.9
ESE
10
0.9
ESE
10
Wave Graph
Metric surfscale
Energy kJ
517
476
435
412
363
333
332
505
708
676
560
493
432
349
304
269
281
256
268
268
196
192
140
158
Wind (km/h)
25
ESE
20
ESE
20
ESE
15
ESE
10
SW
25
NE
25
ENE
30
ESE
20
SE
15
ESE
15
ESE
20
SE
15
S
20
SW
15
SW
15
SW
20
WSW
15
W
10
NW
15
N
15
N
15
NNW
15
N
10
N
cross-on
cross-on
cross-on
on
cross
cross
cross-on
on
on
on
on
on
cross-on
cross
cross
cross
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
2:09AM1.53m
1:52PM1.52m
3:01AM1.63m
3:19PM1.62m
3:46AM1.75m
4:26PM1.76m
Low Tide
8:04AM0.95m
8:28PM0.65m
9:14AM0.75m
9:32PM0.64m
10:10AM0.51m
cloud
cloud
cloud
thunderstorm
mod rain
heavy rain
heavy rain
light rain
light rain
light rain
light rain
mod rain
thunderstorm
light rain
cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:45
5:45
5:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:06
7:06
2
6
23
32
1
1
1
2
6
5
2
Temp °C
22
23
23
23
23
21
21
22
21
22
22
22
23
23
23
24
24
24
24
24
24
24
24
23
21
23
24
25
26
20
20
20
21
23
23
23
24
24
24
26
25
25
26
26
25
24
25
25
Swell 1
Height (m)
Direction
Period (s)
0.4
SE
13
1.8
E
9
1.7
E
9
1.6
E
9
1.5
E
9
1.4
ESE
9
1.4
E
9
0.1
N
6
2
ESE
9
1.8
ESE
9
1.7
E
9
1.6
ESE
9
1.4
E
9
1.3
E
9
1.3
E
9
1.2
E
9
1.2
E
10
1.2
E
10
1
E
10
1
E
10
0.9
ESE
10
0.9
ESE
10
Energy kJ
56
476
435
412
363
333
332
1
560
493
432
349
304
269
281
256
268
268
196
192
140
158
Swell 2
Height (m)
Direction
Period (s)
0.2
N
6
0.4
SE
12
0.4
SE
12
0.4
SE
12
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.1
N
6
0.1
S
11
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.6
W
5
0.5
W
5
0.6
ENE
10
0.5
ENE
9
0.7
ENE
9
0.7
ENE
9
Energy kJ
3
52
51
47
43
30
37
1
2
7
7
6
7
15
11
71
49
90
88
Swell 3
Height (m)
Direction
Period (s)
0.1
N
6
0.1
N
6
0.1
N
6
0.1
N
6
0.1
N
6
0.1
N
6
0.1
S
11
0.1
S
11
0.1
S
10
0.4
SE
8
0.3
SSE
8
0.5
WNW
5
0.4
WNW
4
0.4
NW
4
0.3
SSE
7
Energy kJ
1
1
1
1
1
1
2
2
2
17
13
12
8
5
11
Wind waves
Height (m)
Direction
Period (s)
1.9
E
8
1.7
E
9
2.2
ESE
9
2.2
ESE
9
0.6
WSW
4
0.5
SW
4
0.6
WSW
4
0.6
W
4
0.6
W
4
0.3
NNW
3
0.3
N
3
0.3
N
3
0.4
NW
4
Energy kJ
517
505
708
676
10
7
13
13
15
1
2
2
6
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
1
1
2
2
2
1
1
3
1
1
1
1
1
1
1
2
2
2
1
1
2
Distance (km)
33
33
596
67
16
687
33
596
67
588
17
596
588
16
16
16
16
16
0
0
0
16
16
0
Best forecast wave conditions in Okinawa
Rating
(10 max)
2
2
1
2
2
1
3
2
2
2
2
2
2
2
2
2
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
1
1
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
9
8
6
5
5
5
5
4
5
5
5
5
9
9
9
9
9
9
9
8
9
9
7
7
  • 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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