Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 pm 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
27.4°C
1.1° 

Asakawa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Asakawa surf forecast from 20 Sep 2026:

  • Best quality surf: Monday 21 Sep, 3AM (local time) - 11ft (3.5m), 13s period, SE swell with offshore winds.
  • Most powerful swell: Monday 21 Sep, 3AM (local time) - 11ft (3.5m), 13s period, SE swell with 4,183 kJ wave energy.
  • Next surfable swell (1★+): Monday 21 Sep, 3AM (local time) - 11ft (3.5m), 13s period with SE swell.

Best Forecast Surf Conditions for Asakawa this week:

The surf forecast for Asakawa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 21) at 3AM. The primary swell is predicted to be 3.5m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 3.5m 13s and forecast to arrive on Monday (Sep 21) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Monday (Sep 21) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Mon 21st Sep)11ft (3.5m) 13s
Best Surf 3AM (Mon 21st Sep)11ft (3.5m) 13s
Most Powerful 3AM (Mon 21st Sep)11ft (3.5m) 13s

Table - best surf conditions forecast for Asakawa over the next 16 days.


Short Range Forecast

Mostly dry. Warm (max 28°C on Sun afternoon, min 18°C on Tue night). Winds decreasing (fresh winds from the N on Sun night, light winds from the ENE by Wed morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Thu morning, min 20°C on Thu night). Wind will be generally light.

Sun
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
3
4
2
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3.5
SE
13
3.5
SE
13
3.5
ESE
13
3
ESE
12
1.3
ESE
11
0.5
E
10
0.4
SE
10
0.2
SSE
9
0.2
SSE
9
0.3
SE
7
0.2
SSE
9
0.3
SE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
8
0.2
SSE
16
0.4
SSE
14
0.6
SSE
12
0.6
SSE
11
0.8
SSE
10
Wave Graph
Metric surfscale
Energy kJ
4122
3925
3801
2765
401
46
25
9
8
8
8
12
7
7
7
24
63
107
91
141
Wind (km/h)
30
NNE
25
N
30
N
20
NNW
10
NW
15
N
15
N
20
N
10
N
5
E
5
WNW
5
NE
10
E
10
N
10
NNE
10
E
5
W
5
WSW
5
ENE
5
NE
Wind State
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
glassy
cross
off
cross-off
cross-on
glassy
glassy
cross
glassy
High Tide
3:50PM1.33m
11:43PM1.27m
4:02PM1.43m
2:13AM1.33m
4:20PM1.53m
3:17AM1.45m
4:39PM1.62m
4:03AM1.59m
5:00PM1.70m
4:42AM1.71m
5:21PM1.77m
5:20AM1.80m
5:42PM1.82m
Low Tide
8:58PM1.25m
8:18AM0.63m
9:37PM1.13m
9:16AM0.53m
10:01PM0.99m
9:56AM0.44m
10:26PM0.84m
10:30AM0.37m
10:52PM0.68m
11:02AM0.33m
11:19PM0.51m
11:32AM0.34m
11:48PM0.36m
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:50
5:50
5:50
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:02
6:01
6:00
5:59
5:57
5:55
5:54
 mm
Temp °C
28
25
27
27
24
28
28
21
26
26
22
27
27
23
26
26
23
25
24
22
Feels °C
27
24
25
27
25
26
27
20
26
27
24
29
29
25
26
27
26
28
27
25
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Asakawa Surf forecast

The above surf forecast table for Asakawa provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Asakawa can be found by selecting the local surf guide option on the grey menu. Our Asakawa surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Asakawa) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Asakawa may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Shikoku? If you are looking for accommodation near Asakawa, camping, hotels and holiday cottages in Shikoku, consider staying in Anan which is 41 km (25 miles) away. Other places in and around Shikoku where you can find information about places to rent, and car hire include Muroto which is 44 km (27 miles) away, Komatsushima, Aki and Kamojima.

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