Asakawa Surf Break

Asakawa Surf Forecast and Surf Report

Lat Long: 33.63° N 134.38° E

Issued: 8 pm 07 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
24.4° C

1.5°C colder than average for this time of year

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


Asakawa surf forecast from 7 Jul 2026:

  • Best quality surf: Saturday 11 Jul, 12AM (local time) - 13ft (4.0m), 17s period, S swell with glassy winds.
  • Most powerful swell: Saturday 11 Jul, 3AM (local time) - 13ft (4.0m), 17s period, S swell with 9,647 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 8 Jul, 3AM (local time) - 7ft (2.2m), 16s 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 Wednesday (Jul 08) at 3AM. The primary swell is predicted to be 2.2m and 16s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 4.0m 17s and forecast to arrive on Saturday (Jul 11) at 3AM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Wed 8th Jul)7ft (2.2m) 16s
Best Surf12AM (Sat 11th Jul)13ft (4.0m) 17s
Most Powerful 3AM (Sat 11th Jul)13ft (4.0m) 17s

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


Updates in  hr  min  s Forecast update imminent

Alright, let's get into it.

Things are about to get real interesting around here, but you’re gonna have to wait a couple of days for the magic to start. The beginning of the week is a bit of a letdown, with only marginal, questionable conditions, but I can already see the pulse of a solid swell building.

On Wednesday afternoon, July 8th, we start to see a pulse of energy from the SSE, with a 7 ft swell running on a 16-second period. That’s a proper groundswell, and while the wind is light and onshore at 6 mph, the energy is already strong (combined energy of 3231). It’s not perfect yet, but it's a sign of things to come.

The real standout window is from Friday afternoon, July 10th through Saturday, July 11th. The swell peaks on Friday afternoon at 12 ft from the S with a 16-second period. The combined energy rockets up to 9124 – that’s a serious amount of power, very strong. The wind holds light and onshore at 6 mph, which is a little frustrating, but the wave quality will be there at Asakawa (a point break). Keep in mind, this swell is big – over 8 ft – so this is for experienced surfers only. On Saturday morning, it’s holding at a solid 13 ft from the S, with a 17-second period and energy of 9002, still with light onshore winds. This is the peak size, but it’s big and powerful.

There’s a bit of a drop-off and the wind turns cross-onshore by Saturday afternoon, so that window Friday afternoon through Saturday morning is your best bet. After that, the swell eases through the rest of the weekend, but the wind stays a bit scratchy.

Then, hold on. On Monday morning, July 13th, things go glassy. The swell has backed right down to 5 ft from the SSW, but the wind is glassy calm. Even though the energy is lower (557), the conditions will be beautiful for a longboard or a fun board. That’s a dawny you won't want to miss.

After that, we go through a long, flat spell. From the 14th onward, the swell drops right out, with a lot of days of 1 ft to 2 ft with very low energy. It’s a quiet run through the second week, though there might be a tiny, clean window on Wednesday morning, July 15th, with 4 ft from the SE and glassy conditions, but it won't have much punch.

So to wrap it up: your standout is definitely the Friday afternoon, July 10th through Saturday morning, July 11th window, where the south groundswell is maxed out. It’s big, powerful, and for experts only. For a more mellow, clean session, aim for the glassy Monday morning of July 13th.

- Rusty

Short Range Forecast

Light rain (total 2mm), mostly falling on Fri morning. Warm (max 27°C on Thu morning, min 23°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Sun afternoon. Warm (max 30°C on Mon morning, min 24°C on Fri night). Wind will be generally light.

Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tue
14
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
3
3
3
4
3
2
5
4
7
8
6
5
4
4
3
3
2
1
2
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SE
16
2.1
SE
15
2.2
SE
16
2.5
SSE
15
2.5
SSE
15
3
SSE
15
3
SSE
16
3
S
16
4
S
17
4
S
17
4
S
17
4
SSW
17
3.5
SSW
16
2.5
SSW
16
2.1
SSW
14
1.4
S
12
1.1
S
10
1.2
SSW
11
1.1
SSW
11
0.9
SSW
10
0.8
SE
12
Wave Graph
Metric surfscale
Energy kJ
1494
1882
2314
3156
3009
3513
4819
4132
8721
9483
8460
8120
6381
3246
1750
555
225
370
292
163
187
Wind (km/h)
5
SSE
10
SSE
10
SSE
0
SSE
5
SE
15
SSE
0
WSW
10
SE
10
SSE
5
SSE
5
SSE
10
S
5
SW
5
S
5
S
5
W
5
E
5
SSE
5
WNW
5
ENE
5
SE
Wind State
on
on
on
glassy
cross-on
on
glassy
cross-on
on
glassy
on
on
cross
glassy
on
cross-off
glassy
on
cross-off
glassy
on
High Tide
10:55PM1.60m
11:38AM1.36m
11:41PM1.58m
1:20PM1.35m
00:36AM1.58m
3:00PM1.43m
1:41AM1.60m
4:18PM1.55m
2:47AM1.65m
5:16PM1.67m
3:49AM1.73m
6:04PM1.75m
4:46AM1.81m
Low Tide
5:30AM0.68m
5:17PM0.83m
6:40AM0.57m
6:30PM0.98m
7:54AM0.44m
8:00PM1.08m
9:03AM0.28m
9:23PM1.10m
10:04AM0.12m
10:28PM1.08m
10:59AM-0.01m
11:22PM1.02m
11:49AM-0.08m
cloud
part cloud
clear
part cloud
clear
clear
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
part cloud
part cloud
part cloud
thunderstorm
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
4:58
4:58
5:00
5:00
5:01
5:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:15
7:14
7:14
7:14
 mm
1
1
3
1
Temp °C
23
25
26
23
27
27
24
27
26
25
27
27
25
29
28
26
30
30
27
32
32
Feels °C
26
28
29
27
29
29
29
30
29
30
30
31
30
32
33
31
35
35
32
36
37
Swell 1
Height (m)
Direction
Period (s)
1.8
SE
16
2.1
SE
15
2.2
SE
16
2.5
SSE
15
2.5
SSE
15
3
SSE
15
3
SSE
16
3
S
16
4
S
17
4
S
17
4
S
17
4
SSW
17
3.5
SSW
16
2.5
SSW
16
2.1
SSW
14
1.4
S
12
1.1
S
10
1.2
SSW
11
1.1
SSW
11
0.9
SSW
10
0.8
SSW
10
Energy kJ
1494
1882
2314
3156
3009
3513
4819
4132
8721
9483
8460
8120
6381
3246
1750
555
225
370
292
163
128
Swell 2
Height (m)
Direction
Period (s)
1
ESE
7
1.1
SSE
18
1.2
SSE
18
0.8
S
19
1.3
S
20
1.8
S
18
1.6
SSW
21
0.1
SE
15
0.5
SE
10
0.9
SW
13
0.8
SSW
12
0.3
SE
10
0.4
ESE
9
0.5
SE
13
0.8
SE
12
Energy kJ
99
803
917
475
1294
2084
2162
8
50
261
180
17
26
82
187
Swell 3
Height (m)
Direction
Period (s)
0.6
SSE
20
0.2
E
8
0.5
E
8
0.4
SE
11
0.3
SE
11
0.3
ESE
9
0.3
SE
12
0.4
ESE
9
0.5
ESE
8
Energy kJ
275
4
35
40
18
16
23
26
40
Wind waves
Height (m)
Direction
Period (s)
1.4
E
7
0.6
E
5
0.8
E
8
Energy kJ
203
17
82
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
5
4
4
5
5
5
8
9
9
9
7
4
4
3
2
2
2
2
Distance (km)
11
0
19
11
0
19
11
0
19
11
11
11
2
2
19
14
0
0
0
0
41
Best forecast wave conditions in Shikoku
Rating
(10 max)
4
4
5
5
4
4
5
6
7
8
9
9
9
9
6
4
4
3
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
4
4
5
5
4
4
5
6
7
8
9
9
9
9
6
4
4
3
2
2
2
Header Global
Rating
(10 max)
5
5
9
8
7
7
7
6
6
6
5
5
5
5
5
6
8
6
5
5
5
  • 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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