Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 8 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
29.4°C
2.0° 

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


Asakawa surf forecast from 4 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 9AM (local time) - 10ft (3.0m), 9s period, E swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 9PM (local time) - 10ft (3.0m), 11s period, ESE swell with 2,112 kJ wave energy.
  • Next surfable swell (1★+): Saturday 5 Sep, 12AM (local time) - 3ft (0.9m), 10s period with SSW 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 Saturday (Sep 05) at 12AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.6m and 6s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 3.0m 11s and forecast to arrive on Sunday (Sep 06) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Sep 04) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sat 5th Sep)3ft (0.9m) 10s
Best Surf 9AM (Sun 6th Sep)10ft (3.0m) 9s
Most Powerful 9PM (Sun 6th Sep)10ft (3.0m) 11s

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


The Lowdown

Alright, Rusty here again, breaking down the same lineup in feet and Fahrenheit for you.

The water is running a touch warmer than average for this time of year, so you won't need a thick winter suit.

Friday the 4th is a total loss. There’s a 5ft south swell, but with thunderstorms and 18 mph cross-off winds, it’s a mess.

Saturday the 5th is small—around 3ft—and the wind is still cross-off. It’s rideable, but nothing you’d set an alarm for.

Then we get to Sunday the 6th. This is the one. A 10ft east swell is pouring in. The combined energy reading is massive, and this is a powerful, expert-only day. The wind is light and cross-off in the morning, so it’ll be clean. This is a point break, so that longer period swell will wrap in nicely. Crowds are possible at this inconsistent spot. This is your session if you’ve got the guts.

Monday the 7th still has a solid 7ft from the southeast, but quality is more marginal. Tuesday the 8th cleans up with a 4ft to 4ft south swell and a nice 11-second period. It’s a good, clean option, but not the beast that Sunday was.

From Wednesday the 9th onward, the swell drops off to under 3ft. The morning of the 11th offers a tiny glassy window, but it’s short-period windswell.

The second week, from around the 13th, is mostly flat. A small, long-period southeast groundswell on the 13th (around 2ft, 14-second period) gives a glassy morning, but it’s barely a ripple. The rest of the week is all under 3ft and generally ugly.

Bottom line: your only real shot at something memorable is Sunday the 6th. Everything else is small, weak, or blown out. After the 10th, you’re looking at a long stretch of nothing worth the drive.

Get out there Sunday, or wait for the next system.

- Rusty

Short Range Forecast

Heavy rain (total 207mm), heaviest during Fri afternoon. Warm (max 26°C on Fri morning, min 21°C on Fri afternoon). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 29mm), heaviest during Mon morning. Warm (max 29°C on Wed morning, min 23°C on Mon morning). Wind will be generally light.

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
1
1
0
2
4
2
3
2
1
2
2
2
2
1
0
0
0
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)
1.5
S
10
1.4
S
10
0.9
SSW
10
0.9
SSW
9
0.9
SSW
9
1.6
ESE
7
3
E
9
2.4
ESE
10
2.1
SE
11
2.1
SE
10
1.7
SE
10
1.3
SE
10
1.1
S
11
1.3
S
11
1
S
10
0.8
S
9
0.9
SE
8
0.9
SE
8
0.6
SE
7
0.9
SE
8
1.3
ESE
6
Wave Graph
Metric surfscale
Energy kJ
408
362
166
141
119
256
1669
1163
1081
876
520
293
284
379
217
108
115
109
44
82
127
Wind (km/h)
10
NE
30
NNE
10
NNE
15
NNE
15
NNE
15
NE
15
NE
20
NNE
25
NNE
20
N
15
N
15
N
15
NNE
15
NNE
15
N
15
N
20
NNE
20
N
25
NNE
20
NNE
10
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
11:18AM1.35m
9:43PM1.56m
1:51PM1.33m
11:00PM1.46m
3:35PM1.46m
1:17AM1.44m
4:19PM1.58m
2:54AM1.54m
4:52PM1.68m
3:59AM1.68m
5:21PM1.76m
4:49AM1.79m
5:47PM1.81m
Low Tide
3:51PM1.11m
5:37AM0.48m
5:35PM1.26m
7:28AM0.46m
8:34PM1.23m
8:55AM0.35m
9:45PM1.08m
9:55AM0.25m
10:28PM0.91m
10:41AM0.18m
11:04PM0.73m
11:20AM0.16m
11:38PM0.57m
thunderstorm
heavy rain
heavy rain
mod rain
light rain
mod rain
mod rain
heavy rain
heavy rain
heavy rain
mod rain
light rain
part cloud
cloud
cloud
part cloud
part cloud
part cloud
light rain
light rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:37
5:37
5:39
5:39
5:39
5:41
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:24
6:23
6:22
6:21
6:19
6:17
6:16
 mm
16
52
41
6
2
7
7
36
40
21
7
1
1
4
15
Temp °C
26
21
22
23
23
24
25
24
24
24
24
24
28
27
25
29
29
25
23
23
24
Feels °C
30
19
24
24
24
26
27
25
23
26
26
26
30
30
28
30
30
25
22
24
28
  • 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
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Asakawa:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Asakawa surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest