Asakawa surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 8 am Sunday 31 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Asakawa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Asakawa sea temperature is
22.7° C
(Which is slightly warmer than usual)

How big are the waves at Asakawa today (31 May):

  • Morning surf: Morning surf (31 May, local time) - 3ft (0.9m), 13s period with S swell.
  • Afternoon surf: Afternoon surf (31 May, local time) - 4ft (1.2m), 12s period with S swell.
  • Evening surf: Evening surf (31 May, local time) - 4ft (1.2m), 12s period with S swell.

The current surf forecast for Asakawa at 2PM is: 1.1m 12s primary swell from a South direction and 0.5m 11s secondary swell from a East-southeast direction, 0.3m 6s secondary swell from a South direction (forecast issued at 08:00am May 31). The wind direction is predicted to be glassy and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (31 May)3ft (0.9m)13s
Afternoon (31 May)4ft (1.2m)12s
Evening (31 May)4ft (1.2m)12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 272mm), heaviest during Tue night. Warm (max 28°C on Sun afternoon, min 18°C on Mon night). Winds increasing (calm on Sun night, fresh winds from the ENE by Tue night).

Sunday
31
Monday
1
Tuesday
2
Wed
3
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)
1
1
1
1
0
0
0
1
3
2
1
2
3
3
3
4
4
1
0
0
0
0
0
0
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)
0.6
S
14
0.9
S
13
1
S
13
1.2
S
12
1.2
S
12
1.2
S
12
1.2
S
11
0.8
S
14
1.1
S
14
1.5
S
13
1.8
S
14
1.8
S
14
1.8
S
14
2
S
14
2
S
14
2
S
14
2
S
13
2
S
13
1.8
SSW
13
1.7
SSW
13
1.7
SSW
14
1.9
SSW
14
4.5
SE
9
6
SE
11
Wave Graph
Metric surfscale
Energy kJ
140
284
319
423
409
404
363
264
474
760
1161
1179
1158
1444
1444
1462
1465
1419
1110
1058
1189
1525
3258
8392
Wind (km/h)
5
W
5
WSW
15
WSW
5
SE
20
S
15
SSW
10
SW
10
SW
5
SW
5
SE
10
SSE
10
SSE
10
S
5
SSW
10
SE
5
NE
5
NNE
15
ESE
20
ESE
20
ESE
25
E
30
E
35
E
40
ENE
glassy
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
on
on
on
on
cross-on
on
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
High Tide
4:56AM1.68m
6:39PM1.66m
5:28AM1.69m
7:15PM1.65m
6:00AM1.68m
7:51PM1.62m
Low Tide
11:48AM0.18m
00:00AM0.97m
12:22PM0.16m
00:33AM0.98m
12:57PM0.18m
1:07AM1.00m
cloud
cloud
cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
cloud
light rain
light rain
mod rain
mod rain
mod rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:52
4:52
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:07
7:07
7:07
1
2
9
6
7
14
14
15
27
35
67
Temp °C
22
24
26
28
23
20
19
19
19
23
24
23
22
20
19
18
18
20
20
21
21
21
22
22
24
26
25
28
23
21
20
20
21
24
24
23
24
22
20
20
20
20
20
21
20
19
19
19
Swell 1
Height (m)
Direction
Period (s)
0.6
S
14
0.9
S
13
1
S
13
1.2
S
12
1.2
S
12
1.2
S
12
1.2
S
11
1
S
11
1.1
S
14
1.5
S
13
1.8
S
14
1.8
S
14
1.8
S
14
2
S
14
2
S
14
2
S
14
2
S
13
2
S
13
1.8
SSW
13
1.7
SSW
13
1.7
SSW
14
1.9
SSW
14
2.2
SSW
15
4
SSW
16
Energy kJ
140
284
319
423
409
404
363
235
474
760
1161
1179
1158
1444
1444
1462
1465
1419
1110
1058
1189
1525
2198
6656
Swell 2
Height (m)
Direction
Period (s)
0.6
ESE
11
0.6
ESE
11
0.6
ESE
11
0.5
ESE
11
0.4
ESE
10
0.5
S
15
0.9
SSE
5
0.8
SSE
5
1
S
11
0.8
SSW
16
0.3
ESE
10
0.3
ESE
10
0.6
SSW
17
0.4
ESE
11
0.4
ESE
11
0.4
ESE
10
0.4
ESE
10
0.3
ESE
10
0.2
ESE
12
1.3
SSW
15
0.1
E
16
Energy kJ
84
84
85
74
32
118
42
36
235
346
19
19
197
45
45
42
41
19
15
760
5
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
9
0.3
SE
12
0.2
SSE
9
0.3
SE
12
0.3
SE
12
0.4
ESE
11
0.7
S
15
0.8
S
14
0.8
SSE
5
0.3
ESE
10
0.3
SE
11
0.3
SE
11
0.4
ESE
11
0.4
ESE
11
0.2
ESE
12
Energy kJ
3
22
7
23
22
50
224
264
33
19
19
19
45
46
14
Wind waves
Height (m)
Direction
Period (s)
0.3
S
6
0.8
S
4
0.9
SSE
5
0.1
SE
8
1.1
SE
5
0.9
SE
5
0.2
E
9
1.5
SE
6
2
ESE
6
2.4
ESE
7
3
ESE
8
4.5
SE
9
6
SE
11
Energy kJ
6
18
34
2
55
39
7
138
293
530
1116
3258
8392
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
3
2
2
3
3
3
3
3
4
4
4
3
4
4
3
2
4
4
1
1
1
Distance (km)
0
2
2
11
2349
11
2
2
0
19
19
43
11
4
19
0
0
57
444
369
369
497
473
473
Best forecast wave conditions in Shikoku
Rating
(10 max)
2
2
2
3
2
3
3
4
4
3
4
4
4
4
4
4
4
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
3
2
3
3
4
4
4
4
4
4
4
4
4
4
2
4
4
3
1
2
Header Global
Rating
(10 max)
7
7
7
7
7
6
5
5
5
5
5
5
5
4
5
9
5
5
5
8
5
6
4
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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