Castles surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 8 am Sunday 10 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
23.8° 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 11AM is: 1.8m 9s primary swell from a East direction and 0.1m 15s secondary swell from a Southeast direction (forecast issued at 08:00am May 10). An open ocean swell of 0.3m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (10 May)6ft (1.8m)9s
Afternoon (10 May)6ft (1.9m)9s
Evening (10 May)6.5ft (2.0m)8s

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 52mm), heaviest during Mon night. Warm (max 23°C on Mon afternoon, min 20°C on Sun morning). Mainly fresh winds.

Sunday
10
Monday
11
Tuesday
12
Wed
13
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
12 AM
3 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
1
1
1
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)
1.8
E
9
1.8
E
9
1.9
E
9
1.9
E
9
1.9
E
9
2
E
8
2
E
8
1.9
E
8
1.8
E
9
1.7
E
9
1.6
E
9
1.6
E
9
1.5
E
9
1.6
E
9
1.7
E
9
1.8
E
9
1.7
E
9
1.6
E
9
1.5
E
9
1.5
E
9
1.4
E
9
1.3
E
9
1.3
E
9
1.2
ESE
10
Wave Graph
Metric surfscale
Energy kJ
487
509
586
575
550
546
559
524
494
452
404
422
372
422
473
506
442
402
355
348
318
281
287
271
Wind (km/h)
25
ENE
30
ENE
30
ENE
30
E
30
E
30
E
30
ESE
25
E
20
E
25
E
20
ESE
25
SE
15
SE
25
ENE
35
E
30
ESE
25
SE
10
S
10
SW
10
WSW
10
W
15
WSW
20
WSW
20
WSW
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross
cross-on
on
on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
12:06PM1.52m
2:09AM1.53m
1:52PM1.52m
3:01AM1.63m
3:19PM1.62m
Low Tide
6:35AM1.08m
7:15PM0.62m
8:04AM0.95m
8:28PM0.65m
9:14AM0.75m
9:32PM0.64m
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
light rain
light rain
light rain
thunderstorm
thunderstorm
mod rain
light rain
light rain
thunderstorm
thunderstorm
light rain
light rain
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:46
5:45
5:45
5:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:05
7:06
7:06
1
1
4
3
2
3
2
2
3
9
2
3
3
5
4
2
1
1
1
1
Temp °C
21
21
20
21
22
22
22
22
22
22
22
23
23
22
22
22
23
23
23
23
23
23
23
23
20
19
17
19
19
19
20
21
22
22
22
23
25
22
19
21
23
25
26
25
25
24
23
23
Swell 1
Height (m)
Direction
Period (s)
0.3
NNW
7
0.4
NNW
7
0.3
NNW
7
0.3
N
6
0.3
SE
13
0.3
SE
13
0.4
SE
13
0.4
SE
12
0.4
SE
12
1.7
E
9
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.4
SE
10
0.3
SE
9
0.1
SE
9
0.1
SE
9
1.6
E
9
1.5
E
9
1.5
E
9
1.4
E
9
1.3
E
9
1.3
E
9
1.2
ESE
10
Energy kJ
10
15
9
7
28
27
40
52
51
452
43
30
37
24
13
3
3
402
355
348
318
281
287
271
Swell 2
Height (m)
Direction
Period (s)
0.3
N
7
0.1
SE
15
0.1
SE
15
0.2
N
6
0.2
N
6
0.2
N
6
0.1
N
6
0.1
N
6
0.4
SE
12
0.1
N
6
0.1
N
6
0.1
N
6
0.1
N
6
0.1
N
5
0.2
SSE
10
0.2
SSE
9
0.1
S
11
0.3
SE
8
0.3
SE
8
0.2
SSE
8
0.2
SSE
8
Energy kJ
8
8
8
3
3
3
1
1
36
1
1
1
1
1
10
8
2
11
11
7
7
Swell 3
Height (m)
Direction
Period (s)
0.3
N
7
0.2
N
6
0.1
N
6
0.1
SE
9
0.1
S
11
0.1
S
11
0.1
SE
10
0.1
S
10
Energy kJ
9
3
1
3
2
2
4
2
Wind waves
Height (m)
Direction
Period (s)
1.8
E
9
1.8
E
9
1.9
E
9
1.9
E
9
1.9
E
9
2
E
8
2
E
8
1.9
E
8
1.8
E
9
1.6
E
9
1.6
E
9
1.5
E
9
1.6
E
9
1.7
E
9
1.8
E
9
1.7
E
9
0.4
SSW
3
0.7
SSW
4
0.6
SW
4
Energy kJ
487
509
586
575
550
546
559
524
494
404
422
372
422
473
506
442
4
11
12
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
2
1
2
2
2
2
2
1
2
2
2
1
2
1
1
1
2
2
1
1
1
Distance (km)
32
29
29
29
733
607
92
588
588
588
67
596
596
596
588
42
41
596
16
0
0
16
16
48
Best forecast wave conditions in Okinawa
Rating
(10 max)
2
2
2
2
2
1
2
1
2
2
2
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
2
1
1
2
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
4
4
4
4
5
9
9
8
6
9
5
5
4
5
4
8
9
6
9
9
9
9
9
9
  • 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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