Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 8 pm 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
28.1° 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 19 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 9PM (local time) - 2.5ft (0.8m), 12s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Monday 27 Jul, 3AM (local time) - 3.5ft (1.1m), 12s period, S swell with 353 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 0.4m and 10s. Another secondary swell of 0.2m and 3s is also forecast. Another secondary swell of 0.5m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 1.1m 12s and forecast to arrive on Monday (Jul 27) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Tuesday (Jul 21) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 24th Jul)1ft (0.3m) 18s
Best Surf 9PM (Sun 26th Jul)2.5ft (0.8m) 12s
Most Powerful 3AM (Mon 27th Jul)3.5ft (1.1m) 12s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it. We’ve got a bit of a slow start with Asakawa, but there’s something brewing out there for the patient surfer.

Right now, through the end of July, it’s pretty flat. We’re looking at tiny waves, mostly around 0.7ft to 1ft from the ESE, with not enough energy to get excited about. The combined swell energy is weak, sitting in the low double digits (22 to 77). The wind is a mixed bag, with some glassy mornings on Tuesday, Wednesday, and Thursday that would make the water look like a mirror, but there’s just no push. The 24th of July sees a glimmer with a very long period 18-second swell sneaking in from the SE, but it’s still only 1.0ft. The water temp is about average for the time of year, nothing wild.

The real action starts to build around the 27th of July. Monday morning the swell lifts to 4ft from the SSE, and the energy jumps to 612 – that’s moderate energy. The wind is light cross-shore, keeping things a little bumpy. By Monday afternoon, it’s 5ft from the S with a 12-second period. Tuesday the 28th is where it gets serious: a solid 10ft groundswell from the S hitting with a 15-second period, and the energy is cranking at 3416. That’s strong. But the wind is cross-onshore, so it’s not going to be perfect. This is a big, powerful swell. For a point break like Asakawa, that long period will wrap in nicely, but the 10ft is too big for beginners. It’s expert territory.

The standout moment might be the 27th of July Monday afternoon. That 5ft swell from the S, with that 12-second period, combined with the light onshore wind, won’t be pristine, but it’s the first real sign of life. The 28th morning has the size, but the wind is a bit of a letdown. The big dog is the 1st of August, but that’s 8 days away. The forecast shows a 16ft monster from the S with a 14-second period, and energy levels going through the roof at 10535. But the wind is howling onshore at 19 mph, and there’s a risk of thunderstorms. That’s a full-on, angry ocean. Only for the truly experienced, and even then, it’s going to be a battle.

From the 31st of July through the 4th of August, the swell stays big, 8ft to 13ft, mostly from the SSW, but the wind is consistently cross-onshore or onshore, creating chop and poor conditions. The 4th of August Tuesday morning offers a drop in size to 5ft from the ESE, with a very long 18-second period. The energy is still strong at 2601, and the wind is light cross-onshore. That could be a redeeming moment, much cleaner than the days before, but it’s a long way out.

So, the best on offer? If you’ve got the skills, the 28th of July Tuesday morning has the biggest, most powerful swell of the early window, but the wind is against it. For a cleaner, more manageable wave, keep an eye on the 27th of July Monday afternoon. That’s the one that might actually deliver a fun session. The 4th of August is a promising, long-range whisper.

Rusty out.

Short Range Forecast

Light rain (total 8mm), mostly falling on Wed afternoon. Warm (max 31°C on Mon morning, min 26°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 13mm), heaviest on Thu afternoon. Warm (max 32°C on Thu morning, min 27°C on Wed night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
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
0
0
0
0
0
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)
0.4
SE
9
0.4
ESE
9
0.2
ESE
11
0.2
ESE
11
0.2
ESE
11
0.3
ESE
11
0.3
ESE
11
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
0.4
SE
16
0.4
SE
16
0.4
SE
16
0.4
SE
16
Wave Graph
Metric surfscale
Energy kJ
20
31
12
12
11
23
22
22
11
11
25
25
50
49
49
69
91
90
86
Wind (km/h)
5
WSW
5
S
15
S
5
W
5
SE
10
SSW
5
W
5
SE
5
SSW
5
WNW
5
ESE
10
SSW
5
WNW
5
ESE
10
S
5
NW
5
SE
5
SSE
5
W
Wind State
cross
on
cross-on
glassy
glassy
cross-on
cross-off
glassy
cross-on
cross-off
glassy
cross-on
glassy
glassy
cross-on
glassy
glassy
on
cross-off
High Tide
9:39PM1.67m
9:44AM1.49m
10:10PM1.62m
10:46AM1.35m
10:42PM1.56m
12:10PM1.25m
11:21PM1.50m
2:11PM1.24m
00:16AM1.45m
3:54PM1.32m
1:31AM1.43m
4:48PM1.42m
2:45AM1.46m
Low Tide
3:49AM0.67m
3:45PM0.65m
4:40AM0.66m
4:20PM0.84m
5:41AM0.66m
5:01PM1.01m
6:53AM0.64m
6:12PM1.14m
8:11AM0.59m
8:12PM1.20m
9:17AM0.51m
9:41PM1.17m
clear
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
clear
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:05
5:05
5:07
5:07
5:07
5:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:12
7:10
7:09
7:09
7:08
7:08
7:07
 mm
1
2
1
1
3
1
3
1
1
2
2
3
Temp °C
27
31
31
28
30
30
28
30
31
28
32
31
28
31
31
28
32
31
28
Feels °C
32
35
35
34
35
34
33
36
36
33
37
36
33
36
35
33
36
36
33
  • 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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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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