Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 8 am 24 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
28.4° C
1.3° 

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


Asakawa surf forecast from 24 Jul 2026:

  • Best quality surf: Friday 24 Jul, 9PM (local time) - 1ft (0.3m), 17s period, SE swell with cross-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, 9PM (local time) - 1ft (0.3m), 17s 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 9PM. The primary swell is predicted to be 0.3m and 17s period with a secondary swell of 0.4m and 11s. 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Jul 25) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Fri 24th Jul)1ft (0.3m) 17s
Best Surf 9PM (Fri 24th Jul)1ft (0.3m) 17s
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

G'day, I'm Rusty, and I've got a look at what's on the cards for Asakawa over the next couple of weeks. It's a quiet start, but we've got a serious pulse of energy building in the second week, so let's get into it.

For the first week and a bit, from Friday the 24th of July right through to Tuesday the 4th of August, it's honestly pretty flat. The swell stays tiny, mostly around 1.0ft to 2ft, with periods varying from 18 seconds down to 9 seconds. That long period (18 seconds) early on sounds nice, but at 1.0ft, there's just nothing to work with. The combined wave energy is weak, sitting below 100 for most of that time, only briefly nudging into the low-to-mid 100s on the 26th and 27th. The winds are often glassy, which is a tease, but the surf is just too small to get excited about. This is a real gap of about 11 days where there's no real recommendation.

Now, Wednesday the 5th of August is where things flip. The swell starts to show up overnight, and we get a 8ft ESE groundswell with a very long period of 16 seconds on Wednesday morning, building to 10ft by the afternoon. The combined energy jumps to 3838 on the morning and 4728 in the afternoon, which is strong. Winds are glassy, so it'll be clean. This is only for experienced surfers – 8ft and up is big, and 10ft is a serious ocean. The swell direction from the ESE matches the optimum for this point break, which is a good sign.

The real standout is Thursday the 6th of August. The swell is a solid 13ft from the ESE, with a very long period of 17 seconds. The wind is a clean cross-off from the NNE, meaning the faces will be groomed. The combined energy is enormous, hitting 8468 in the morning and 9696 in the afternoon. This is a powerful, deep ocean groundswell, and it's going to be a proper show. The water temperature is 83°F, which is a touch warmer than normal for this time of year, so you'll be in boardshorts.

Friday the 7th of August keeps the energy going, with 15ft ESE swell and a 17-second period, but the wind picks up to a moderate breeze from the north, still cross-off and clean. The combined energy is massive, over 11,000 in the morning and over 13,000 in the afternoon. This is powerful, thumping surf.

Saturday the 8th of August is the peak for the window. The same 15ft ESE swell, now with an 18-second period, gets offshore winds from the north in the morning. The combined energy is 13,068, which is exceptional. This is expert-level territory, and it's going to be a long-period groundswell, which at a point break like Asakawa should be absolutely perfect. The crowds are listed as "sometimes," so you might get a few others out, but with size like this, it'll thin out quick.

Overall, the best of the lot is Thursday the 6th of August, with that 13ft ESE groundswell at 17 seconds and clean cross-off winds. It's a world-class day for the experienced crew. Keep an eye on the 8th as well, with the offshore wind. Don't bother for the first week and a half, it's a total write-off. This is a classic case of wait for the big one.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Sun afternoon. Warm (max 33°C on Sat morning, min 26°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 19mm), heaviest on Tue morning. Warm (max 31°C on Mon morning, min 25°C on Mon night). Wind will be generally light.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
0
0
0
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
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
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.4
ESE
10
0.4
ESE
9
0.4
ESE
9
Wave Graph
Metric surfscale
Energy kJ
49
49
42
91
90
87
78
76
74
72
70
65
49
49
48
48
48
47
35
35
35
Wind (km/h)
5
E
5
S
5
NNW
5
ENE
5
SSE
5
NW
5
ESE
0
SSW
5
NW
5
NE
5
E
5
NNW
10
NE
5
ENE
5
NNW
5
ENE
5
ESE
5
NW
5
E
5
SE
10
W
Wind State
glassy
glassy
off
glassy
glassy
off
glassy
glassy
cross-off
cross-off
cross-on
off
cross-off
glassy
glassy
glassy
glassy
cross-off
glassy
on
cross-off
High Tide
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
5:10AM1.68m
6:46PM1.68m
5:48AM1.74m
7:11PM1.71m
Low Tide
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
12:00PM0.17m
00:13AM0.89m
12:32PM0.15m
00:44AM0.81m
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
cloud
thunderstorm
clear
clear
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:09
5:09
5:09
5:11
5:11
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:08
7:07
7:07
7:07
7:06
7:05
7:04
 mm
2
1
1
4
3
1
3
5
1
2
4
Temp °C
32
31
29
33
32
29
32
30
28
31
31
27
29
29
27
29
29
27
30
30
27
Feels °C
37
36
34
37
36
34
36
36
33
34
35
31
33
33
31
33
34
31
33
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)
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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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