Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 am 22 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
28.0° C
1.0° 

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


Asakawa surf forecast from 21 Jul 2026:

  • Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with offshore winds.
  • Most powerful swell: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 94 kJ wave energy.
  • Next surfable swell (1★+): Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s 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 Friday (Jul 24) at 12AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.2m and 3s is also forecast. Another secondary swell of 0.4m and 4s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 0.4m 16s and forecast to arrive on Saturday (Jul 25) 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 0.5m 3s period and expected on Sunday (Jul 26) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 24th Jul)1ft (0.3m) 18s
Best Surf12AM (Fri 24th Jul)1ft (0.3m) 18s
Most Powerful 3AM (Sat 25th Jul)1.5ft (0.4m) 16s

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


The Lowdown

Alright, I’ll level with ya. We’ve got a bit of a slow start for Asakawa. Don’t get too excited for the first week or so, but there’s a serious payoff waiting if you’re patient.

Right now, the water’s sitting at a warm 82°, which is about normal for this time of year. No surprises there.

The first real whisper of anything worthwhile comes on Friday morning, July 24th. We’re talking tiny 1.0ft groundswell from the southeast, with a long period of 18 seconds. The energy is weak (73), and it’s just about surfable, but honestly, it’s more of a paddle practice session. The wind’s glassy though, so if you’re desperate, you could get a few limp ones.

Saturday morning, July 25th, is a little better. Still a small 1ft SE swell, but the period is still long at 16 seconds, and the energy picks up to moderate (136). We get a light cross-offshore breeze from the NE, keeping the surface clean. It’s still ordinary, but you might catch a runner.

The real turning point starts to show on Thursday morning, July 30th. The swell jumps to 3ft from the SSW, period 12 seconds, and the energy is a solid 270. That’s moderate, but it’s the best we’ve seen. The wind is glassy, dead calm. This is the first session that’s actually worth getting out of bed for. It’s not a standout, but it’s a sign of life.

Now, here’s the one you’ve been waiting for. Sunday morning, August 2nd, and Monday morning, August 3rd are the standouts. On Sunday, we’re looking at a solid 6ft swell from the ESE, with a very long period of 18 seconds. The energy is massive—2039. That’s strong wave energy. This is excellent surf, but listen: at 6ft, it’s getting a bit big for beginners. The period is long, so the sets will be clean and powerful, but at a point break like Asakawa, that long period groundswell should line up nicely. The wind is glassy in the morning. It’s going to be clean, powerful, and punchy.

Monday morning is almost as good: 5ft from the east, period 17 seconds, energy 1357. Still excellent for experienced surfers, and the wind is completely calm, zero. These two days are the clear winners. The swell direction (ESE and E) isn’t a perfect match for the optimum SE direction, but the size and quality make up for it.

Saturday, August 1st, is a warm-up, with a 2ft ESE swell at 16 seconds, energy 362, and a clean cross-offshore breeze. It’s good, but nothing compared to Sunday and Monday.

After that, it drops off again. By Wednesday, August 5th, we’re back to tiny 1ft dribblers and cross-onshore winds. The run is over.

So, to sum it up: the first week is mostly flat and ordinary. The standout is Sunday, August 2nd and Monday, August 3rd. That’s your window. Get out there early with the glassy conditions, because the afternoons get questionable. Don’t sleep on it.

Rusty.

Short Range Forecast

Light rain (total 9mm), mostly falling on Thu afternoon. Warm (max 32°C on Thu morning, min 27°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 19mm), heaviest on Mon afternoon. Warm (max 32°C on Sat morning, min 26°C on Sun night). Wind will be generally light.

Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
1
1
0
1
1
1
1
0
0
1
1
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)
0.3
ESE
11
0.2
ESE
10
0.2
ESE
11
0.4
SE
10
0.4
SE
10
0.3
SE
18
0.3
SE
18
0.3
SE
18
0.3
SE
16
0.4
SE
16
0.4
SE
16
0.4
SE
16
0.4
SE
15
0.4
SE
15
0.4
SE
14
0.4
SE
14
0.4
SE
14
0.4
SE
14
0.6
S
10
0.6
S
9
0.6
S
9
Wave Graph
Metric surfscale
Energy kJ
22
11
11
25
25
50
49
49
42
91
90
87
78
76
74
72
70
65
67
59
56
Wind (km/h)
5
ESE
5
S
5
W
5
ESE
10
S
5
NNW
5
SE
10
SSW
5
NNW
5
NE
5
E
10
NNW
10
ENE
5
SE
5
W
5
ESE
5
SSE
5
W
5
ENE
5
S
10
W
Wind State
glassy
cross-on
cross-off
glassy
cross-on
off
glassy
cross-on
off
cross-off
glassy
off
cross
on
glassy
glassy
on
cross-off
glassy
cross-on
cross-off
High Tide
12:10PM1.25m
11:21PM1.50m
2:11PM1.24m
00:16AM1.45m
3:54PM1.32m
1:31AM1.43m
4:48PM1.42m
2:45AM1.46m
5:23PM1.50m
3:43AM1.52m
5:52PM1.58m
4:30AM1.60m
6:20PM1.64m
Low Tide
5:01PM1.01m
6:53AM0.64m
6:12PM1.14m
8:11AM0.59m
8:12PM1.20m
9:17AM0.51m
9:41PM1.17m
10:08AM0.41m
10:33PM1.11m
10:50AM0.32m
11:10PM1.04m
11:27AM0.23m
11:43PM0.96m
clear
clear
clear
clear
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
clear
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:07
5:07
5:09
5:09
5:09
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:08
7:08
7:07
7:07
7:07
7:06
 mm
3
1
1
3
1
3
1
4
4
1
6
1
1
Temp °C
31
31
28
32
32
29
32
32
29
32
32
29
30
29
27
30
30
27
31
30
27
Feels °C
36
36
33
36
38
34
37
37
34
36
36
33
33
33
33
34
35
31
35
34
31
  • 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