Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 8 pm 27 Aug 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
29.0°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 27 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 6AM (local time) - 2.5ft (0.7m), 7s period, S swell with cross-offshore winds.
  • Most powerful swell: Thursday 3 Sep, 12AM (local time) - 13ft (4.0m), 12s period, S swell with 4,054 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 6AM (local time) - 2.5ft (0.7m), 7s 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 Sunday (Aug 30) at 6AM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.4m and 11s. Another secondary swell of 0.4m and 4s is also forecast. 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 4.0m 12s and forecast to arrive on Thursday (Sep 03) at 12AM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 30th Aug)2.5ft (0.7m) 7s
Best Surf 6AM (Sun 30th Aug)2.5ft (0.7m) 7s
Most Powerful12AM (Thu 3rd Sep)13ft (4.0m) 12s

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


The Lowdown

Alright, Rusty here. Let's talk about what's coming up for us at Asakawa.

Straight up, it's a rough start. We are looking at a long, frustrating gap here. The first week or so is just not worth paddling out for. From now until the end of August and into early September, the conditions are a write-off. The wind is mostly cross-on or onshore, and the wave quality is poor. We’re talking about small, weak swell with combined energy readings in the low hundreds, that's barely a bump. It’s a tough stretch.

We get a bit of a tease around the 31st of August where the swell starts to build, but it's still messy. Then things go wild from the 1st of September, but not in a good way. A solid SSE swell kicks in, but it’s accompanied by strong onshore winds and storms, making it a complete mess.

For the morning of Thursday the 10th of September, the stars finally try to align. We get a decent 6.6ft SE groundswell with a 10-second period. A light N wind is blowing cross-offshore. The report says 'clean'. That could be the one window. It's a point break, and a longer period swell like this is often best for those setups, though period is not super long.

The standout, if you can call it that, is the afternoon of Thursday the 10th. The swell is still a solid 6.2ft from the SE with a 10-second period. Then, the wind goes totally glassy—NNE at only 3 mph. 'Expect very good surf conditions' for that afternoon. This is the best on offer, a real chance for clean, lined-up waves at the point. Expect it to be crowded, as Asakawa can get 'sometimes' busy, and with the best window in the whole forecast, people will be on it.

After that, it gets messy again quickly through the 11th and 12th, with the swell dropping back down. Overall, a long wait for a small window.

Short Range Forecast

Light rain (total 5mm), mostly falling on Fri afternoon. Warm (max 31°C on Sat morning, min 26°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 78mm), heaviest during Tue morning. Warm (max 29°C on Mon morning, min 25°C on Sun night). Wind will be generally light.

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
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)
1.2
S
9
0.9
SSW
8
0.9
SSW
8
0.8
SSW
8
1
SSW
8
0.9
SSW
7
0.7
S
7
0.6
S
7
0.7
S
7
0.5
S
11
1
S
10
1.2
S
9
1.6
SSE
10
1.8
SSE
10
2.3
SSE
9
2.2
SSE
10
2.4
SSE
10
2.5
SSE
10
4
S
12
Wave Graph
Metric surfscale
Energy kJ
235
85
85
73
110
97
53
39
52
64
194
246
523
567
904
885
1140
1406
4054
Wind (km/h)
15
WSW
5
SW
10
SSW
10
WSW
10
SW
15
SSW
10
WSW
5
S
15
S
5
WSW
5
ESE
10
SE
15
SE
25
SE
25
SSE
25
SSE
25
SSE
25
S
20
S
Wind State
cross
cross-on
cross-on
cross
cross
cross-on
cross
cross-on
on
cross
cross-on
cross-on
cross-on
on
on
on
on
on
on
High Tide
5:36AM1.78m
6:30PM1.78m
6:12AM1.83m
6:52PM1.81m
6:48AM1.84m
7:14PM1.82m
7:26AM1.80m
7:38PM1.81m
8:07AM1.73m
8:03PM1.78m
8:53AM1.61m
8:30PM1.72m
Low Tide
11:50PM0.72m
12:05PM0.20m
00:18AM0.60m
12:33PM0.23m
00:48AM0.49m
1:02PM0.31m
1:19AM0.40m
1:31PM0.43m
1:53AM0.35m
2:01PM0.58m
2:31AM0.33m
2:32PM0.75m
part cloud
thunderstorm
thunderstorm
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:33
5:33
5:35
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:35
6:34
6:32
6:30
6:30
6:29
6:28
 mm
1
4
1
14
13
13
23
7
7
17
Temp °C
27
30
30
27
31
31
27
31
30
26
29
29
27
27
27
27
27
27
27
Feels °C
31
35
35
32
33
34
31
34
32
30
33
33
32
29
29
29
29
29
29
  • Map Icons:
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  • 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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