Castles surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 2 am Saturday 23 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
24.3° C
(Which is 1.4°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: 0.8m 9s primary swell from a East-southeast direction and 0.1m 6s secondary swell from a North direction (forecast issued at 02:00am May 23). An open ocean swell of 1.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (23 May)2.5ft (0.8m)9s
Afternoon (23 May)2.5ft (0.8m)9s
Evening (23 May)3ft (0.9m)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 34mm), heaviest during Sat morning. Warm (max 27°C on Sat night, min 24°C on Sat morning). Wind will be generally light.

Saturday
23
Sunday
24
Monday
25
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
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.8
ESE
9
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.9
ESE
9
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.9
ESE
10
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.8
ESE
9
0.8
ESE
9
0.8
ESE
9
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
Wave Graph
Metric surfscale
Energy kJ
144
144
144
115
115
113
121
121
113
115
126
129
126
124
121
119
119
119
96
96
100
105
107
109
Wind (km/h)
30
SSW
25
SW
25
SW
25
SW
25
W
20
SW
20
SW
15
WSW
15
S
15
SSW
15
SW
15
SW
25
WSW
5
W
10
NW
5
NNE
10
ESE
15
SSE
10
SSE
10
S
5
SSW
5
S
5
SE
15
SE
cross
cross
cross
cross
cross-off
cross
cross-off
cross-off
cross-on
cross
cross
cross-off
cross-off
glassy
off
cross-off
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
on
High Tide
00:33AM1.61m
11:37AM1.65m
1:37AM1.60m
1:14PM1.56m
2:33AM1.63m
2:49PM1.56m
Low Tide
5:55AM1.06m
6:37PM0.55m
7:21AM0.99m
7:48PM0.68m
8:41AM0.85m
8:55PM0.78m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
light rain
rain showers
cloud
cloud
thunderstorm
thunderstorm
thunderstorm
rain showers
light rain
light rain
light rain
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:39
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:12
7:12
7:13
1
1
2
2
8
2
2
2
2
1
2
4
2
1
1
1
2
1
1
Temp °C
26
26
26
26
24
26
25
25
25
26
27
27
27
25
24
24
24
24
25
26
26
26
26
25
26
27
26
26
25
27
26
26
27
28
29
29
28
29
27
27
27
26
29
30
30
30
30
28
Swell 1
Height (m)
Direction
Period (s)
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.8
ESE
9
1.2
WSW
6
0.9
WSW
6
0.9
WSW
5
0.9
ESE
9
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.9
ESE
10
0.9
ESE
9
0.8
WSW
6
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.8
ESE
9
0.8
ESE
9
0.8
ESE
9
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
Energy kJ
144
144
144
115
90
43
46
121
113
115
126
129
126
47
121
119
119
119
96
96
100
105
107
109
Swell 2
Height (m)
Direction
Period (s)
0.1
E
10
0.1
E
9
0.1
N
6
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.2
NNW
7
0.2
NNW
7
0.4
WNW
6
0.4
WNW
6
0.4
WNW
7
0.4
W
6
0.9
ESE
9
0.7
SW
6
0.6
SW
6
0.6
WSW
5
0.5
SW
6
0.5
SW
6
0.5
NE
10
0.6
NE
10
0.6
NE
10
0.6
NE
10
0.7
NE
10
Energy kJ
2
2
1
115
113
121
5
5
12
11
15
12
124
38
20
19
18
19
48
79
77
76
94
Swell 3
Height (m)
Direction
Period (s)
0.1
N
8
0.4
SSE
4
0.3
SSE
4
0.1
N
8
0.2
NNW
7
0.2
NNW
7
0.2
NNW
7
0.1
N
7
0.4
W
7
0.5
W
7
0.5
W
7
0.4
NE
10
0.5
NE
10
0.5
NE
10
0.5
SW
6
0.5
SW
6
0.5
SW
6
0.4
SW
6
0.4
WSW
6
Energy kJ
1
6
3
1
5
4
4
1
14
28
27
35
47
46
19
18
18
12
13
Wind waves
Height (m)
Direction
Period (s)
1.1
SW
5
1.1
SW
5
1.2
SW
5
1.6
WSW
6
0.9
WSW
6
0.9
WSW
6
0.8
SW
5
0.7
SW
6
0.8
WSW
6
0.8
SW
6
0.1
N
6
Energy kJ
53
58
74
151
53
55
34
35
46
47
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
588
94
48
48
16
48
48
16
16
16
16
16
16
0
0
0
48
48
48
48
16
16
48
92
Best forecast wave conditions in Okinawa
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
3
3
3
3
3
4
2
3
4
3
3
3
3
2
2
2
2
2
Header Global
Rating
(10 max)
6
7
6
5
5
6
7
8
7
6
5
5
5
5
5
5
5
5
5
5
4
5
5
5
  • 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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