Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 am 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
28.6° C
0.9° 

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


Asakawa surf forecast from 10 Aug 2026:

  • Best quality surf: Tuesday 11 Aug, 9AM (local time) - 3.5ft (1.0m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Tuesday 11 Aug, 9AM (local time) - 3.5ft (1.0m), 10s period, S swell with 216 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 11 Aug, 9AM (local time) - 3.5ft (1.0m), 10s period with S 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 Tuesday (Aug 11) at 9AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.5m 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 1.0m 10s and forecast to arrive on Tuesday (Aug 11) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Aug 11) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 11th Aug)3.5ft (1.0m) 10s
Best Surf 9AM (Tue 11th Aug)3.5ft (1.0m) 10s
Most Powerful 9AM (Tue 11th Aug)3.5ft (1.0m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Asakawa over the next couple of weeks.

Right off the bat, things are pretty quiet. This is a point break that’s known for being inconsistent, so we’re in for a long stretch of small, average surf. There’s a solid gap at the start with no real recommendations. The first chance for a paddle comes Tuesday the 11th in the morning. We’ve got a clean, 3ft south swell with a period of 10 seconds, so it’s got a bit of shape. The combined swell energy is weak though, at just 307. Winds are a light north-northeast cross-offshore, so it’ll be clean. This is your best early call, but don't expect fireworks.

The water temp is 84°F, with a 2°F anomaly – that’s pretty much bang on average for this time of year.

From Tuesday afternoon right through to Thursday the 24th, it’s a real struggle. Mostly waves around 2ft to 2ft and the wind is either onshore or cross-onshore, making it messy. You’ll get the odd glassy morning on Friday the 14th, Saturday the 15th, and Sunday the 16th, and those bring a little surfable 2ft S swell. But the energy is weak (around 126 to 206) and the quality is “very ordinary” at best. That’s your week of small, inconsistent, average summer dribble.

Now, right at the tail end of the outlook, there’s a spike in size, but it’s compromised. On Monday the 25th morning, a long-period 14-second SSE swell pushes in at 3ft, with energy climbing to 407. By Tuesday the 26th morning, we see 6ft S swell, 13-second period, and the energy jumps way up to 1426. That’s strong wave energy. The problem? The wind turns moderate cross-onshore from the south, making it choppy. The period is long, so it’s a proper groundswell, but this point break won’t be at its best with that wind. That 6ft is borderline expert territory for the size, but the conditions are poor for paddling. This setup actually looks more interesting for kite surfing than paddle surfing, between that solid swell and the strong cross-onshore push.

There aren’t really any true standouts here. Your best bet, if you’re desperate for a clean wave, is that Tuesday 11th morning. That’s really the only window where the wind plays nice with the swell direction. Everything else is either too weak or too windy. Keep your expectations low for the next 16 days.

Rusty.

Short Range Forecast

Moderate rain (total 12mm), heaviest on Thu morning. Warm (max 30°C on Tue afternoon, min 22°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Fri afternoon. Warm (max 29°C on Fri morning, min 24°C on Fri night). Wind will be generally light.

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
1
0
0
1
1
0
1
1
0
1
1
0
1
1
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)
1
S
10
0.9
SSW
10
0.9
SSW
10
0.7
SSW
10
0.7
S
10
0.7
S
9
0.7
SSW
9
0.7
SSW
9
0.7
S
9
0.7
S
9
0.7
S
9
0.6
S
8
0.7
S
10
0.7
S
9
0.7
S
10
0.7
S
10
0.7
S
9
0.6
S
9
0.6
S
8
0.4
SE
11
0.4
SE
11
Wave Graph
Metric surfscale
Energy kJ
216
173
173
92
87
83
88
86
79
78
76
52
92
81
94
92
83
56
52
36
35
Wind (km/h)
15
NNE
15
NNE
10
NNW
5
SE
10
SE
0
NNW
10
ESE
10
SSE
5
W
5
SSE
10
S
5
W
5
ESE
10
SSE
0
W
5
SE
10
S
5
W
5
ESE
10
S
5
WSW
Wind State
cross-off
cross-off
off
glassy
cross-on
glassy
cross-on
on
glassy
glassy
on
glassy
glassy
on
glassy
glassy
on
glassy
glassy
cross-on
cross
High Tide
5:51PM1.75m
4:49AM1.80m
6:24PM1.81m
5:39AM1.88m
6:54PM1.83m
6:24AM1.90m
7:22PM1.83m
7:07AM1.87m
7:49PM1.81m
7:49AM1.78m
8:14PM1.77m
8:31AM1.66m
8:38PM1.72m
Low Tide
10:55AM0.05m
11:18PM0.92m
11:39AM-0.00m
11:58PM0.78m
12:20PM0.01m
00:35AM0.66m
12:56PM0.09m
1:12AM0.56m
1:30PM0.22m
1:48AM0.49m
2:00PM0.39m
2:24AM0.47m
2:29PM0.58m
clear
clear
part cloud
part cloud
rain showers
rain showers
thunderstorm
thunderstorm
rain showers
clear
thunderstorm
clear
clear
clear
clear
part cloud
rain showers
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:22
5:22
5:22
5:24
5:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:51
6:49
6:47
6:46
 mm
1
3
6
1
1
1
2
Temp °C
29
30
25
27
26
24
26
28
25
29
28
25
29
29
26
29
29
27
31
30
27
Feels °C
28
29
27
29
28
28
30
30
29
31
30
29
32
32
31
32
33
32
35
33
32
  • 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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