Aoshima Harbour surfForecast / Kyu Shu / Japan

information circle48hr Weather and Surf, issued 2 am Wednesday 20 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Aoshima Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Aoshima Harbour sea temperature is
23.1° C
(Which is normal for this time of year)

How big are the waves at Aoshima Harbour today?

The current surf forecast for Aoshima Harbour at 6AM is: 0.9m 10s primary swell from a East-southeast direction and 1.2m 7s secondary swell from a Southeast direction (forecast issued at 02:00am May 20). The wind direction is predicted to be glassy and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (20 May)3.5ft (1.1m)10s
Afternoon (20 May)4.5ft (1.3m)10s
Evening (20 May)5ft (1.5m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 7mm), mostly falling on Thu morning. Warm (max 26°C on Wed afternoon, min 19°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the SSW by Thu morning).

Wednesday
20
Thursday
21
Friday
22
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
1
2
2
1
1
1
3
2
2
2
1
0
0
3
3
2
1
2
1
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
10
1.1
ESE
10
1.5
SE
7
1.3
ESE
10
1.3
ESE
10
1.5
SE
10
0.9
ESE
10
1.4
S
7
1.1
ESE
10
1
ESE
10
1.4
S
7
1.7
S
7
2.1
SSW
7
1.6
S
7
1.4
SSW
7
0.9
S
7
1.1
SSW
6
0.6
ESE
10
0.6
ESE
10
0.6
ESE
10
0.6
ESE
9
0.7
ESE
9
Wave Graph
Metric surfscale
Energy kJ
144
153
166
245
235
332
332
415
166
181
210
172
176
263
408
247
186
92
97
71
71
71
69
78
Wind (km/h)
10
ENE
10
NE
0
NNE
5
N
5
SE
20
SSE
20
S
15
SW
10
SW
10
SW
15
SSW
20
SW
30
SSW
25
SSW
15
SW
15
WSW
15
WSW
15
WSW
15
WSW
5
NW
15
ENE
15
ESE
15
ESE
10
ESE
on
on
glassy
glassy
cross
cross
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
on
cross-on
cross-on
cross-on
High Tide
7:13AM1.89m
9:21PM1.79m
7:53AM1.79m
10:14PM1.72m
8:42AM1.67m
Low Tide
1:49AM1.08m
2:17PM0.06m
2:35AM1.14m
3:02PM0.19m
3:32AM1.18m
3:54PM0.35m
light rain
mod rain
light rain
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
rain showers
light rain
rain showers
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:07
7:07
2
6
5
1
1
2
2
1
Temp °C
22
22
22
23
25
26
25
23
23
22
22
25
23
23
24
22
21
20
19
23
23
23
23
22
24
25
26
26
28
26
26
25
25
24
23
25
22
23
26
22
20
19
19
23
22
23
22
23
Swell 1
Height (m)
Direction
Period (s)
1.1
SE
7
1.1
SE
7
1.2
SE
7
1.1
ESE
10
1.5
SE
7
1.3
ESE
10
1.3
ESE
10
1.5
SE
10
1.1
SE
7
0.9
ESE
10
1.1
ESE
10
1
ESE
10
0.9
ESE
10
0.9
ESE
9
1.6
S
7
1.3
S
7
1.1
S
7
0.9
S
7
0.8
S
6
0.6
ESE
10
0.6
ESE
10
0.6
ESE
10
0.6
ESE
9
0.7
ESE
9
Energy kJ
130
130
128
245
235
332
332
415
132
163
210
172
129
126
250
161
111
70
50
71
71
71
69
78
Swell 2
Height (m)
Direction
Period (s)
0.9
ESE
9
0.9
ESE
9
0.9
ESE
10
1
SSE
6
0.9
ESE
10
0.9
ESE
10
0.9
SE
7
0.5
S
7
0.9
ESE
10
0.8
S
7
0.8
S
7
0.8
ESE
9
0.8
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.6
S
6
0.6
S
6
0.5
S
6
0.5
S
6
0.5
S
6
Energy kJ
144
153
166
80
169
169
63
21
166
56
55
100
100
92
92
92
27
27
18
18
17
Swell 3
Height (m)
Direction
Period (s)
0.6
E
9
0.6
S
7
0.8
SE
7
0.6
SSE
7
0.2
NNE
5
0.1
NE
5
0.1
NE
5
0.1
NE
6
Energy kJ
60
31
62
37
2
1
1
2
Wind waves
Height (m)
Direction
Period (s)
1.3
SE
6
0.9
S
7
0.7
S
6
0.7
S
7
1.1
S
7
1.1
S
7
1.4
S
7
1.3
S
7
1.1
S
7
1.4
S
7
1.7
S
7
2.1
SSW
7
1.6
S
7
1.4
SSW
7
0.5
W
4
1.1
SSW
6
1.1
SW
6
0.6
S
6
0.6
SSW
6
0.3
ENE
2
Energy kJ
150
77
41
43
104
104
181
157
110
176
263
408
247
186
6
97
91
24
25
1
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
3
2
2
3
2
2
2
2
1
1
3
3
2
1
2
1
1
1
1
1
Distance (km)
39
39
0
0
19
284
284
0
0
0
0
312
330
330
0
0
0
0
0
0
22
359
49
39
Best forecast wave conditions in Kyu Shu
Rating
(10 max)
2
2
3
2
3
3
3
3
2
3
3
3
2
2
2
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
3
2
3
2
2
3
3
3
2
2
1
2
3
3
4
4
2
2
2
1
1
1
Header Global
Rating
(10 max)
4
4
4
5
5
5
4
4
4
5
5
4
4
5
5
4
4
4
4
5
5
5
7
8
  • 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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