Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 pm 16 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
27.1° C
0.3° 

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


Asakawa surf forecast from 16 Jul 2026:

  • Best quality surf: Friday 17 Jul, 6AM (local time) - 2ft (0.6m), 7s period, SSW swell with offshore winds.
  • Most powerful swell: Friday 17 Jul, 6AM (local time) - 2ft (0.6m), 7s period, SSW swell with 37 kJ wave energy.
  • Next surfable swell (1★+): Friday 17 Jul, 6AM (local time) - 2ft (0.6m), 7s period with SSW 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 17) at 6AM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.3m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 0.6m 7s and forecast to arrive on Friday (Jul 17) at 6AM. Winds are predicted to be 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 Wednesday (Jul 22) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 17th Jul)2ft (0.6m) 7s
Best Surf 6AM (Fri 17th Jul)2ft (0.6m) 7s
Most Powerful 6AM (Fri 17th Jul)2ft (0.6m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s be straight with you about Asakawa. This is a point break that’s usually pretty inconsistent, and looking at the next 16 days, it’s a real mixed bag with a lot of waiting involved.

The first half of the outlook is a tough one. From Thursday the 16th right through to the 26th of July, we’re looking at a long run of tiny, weak surf. The swell energy is mostly in the double digits, like 90 (weak) or even down to 15 (weak) on the 20th. We’re talking waves around 0.7ft to 1ft with periods that are either short or just average. It’s basically a lake for over a week, so don’t bother getting the board wet. There are some glassy mornings on the 17th, 21st, 22nd, and 23rd, but with zero swell to work with, it’s just flat and clean.

Things start to get a little more interesting around the 27th of July. On Monday morning, we see a jump to 5ft from the SE with a period of 12 seconds. The energy climbs to 603 (moderate). It’s a bit of a messy signal though, with cross-onshore winds, so it’s only marginal. The best bet for the whole period, and the only true standout, is the morning of Tuesday the 28th of July. We’ve got 7ft of SSE swell with a 12-second period, and the energy is a solid 1687 (strong). But the real kicker is the wind – it’s glassy, dead calm. This is point break territory, and that long period means it’ll hold up nicely here, offering some proper, clean lines. It’s over 5ft though, so it’s not a beginner day, and at 7ft, it’s going to be a proper session for experienced surfers. The afternoon gets a bit more wind and drops to 8ft, which is getting into expert-only territory.

The Wednesday the 29th still has some size at 7ft and 6ft, but the wind swings cross-shore and then cross-on, so it won’t be as clean as Tuesday morning. The energy stays strong (1206 and 950). By Thursday the 30th, the swell drops back to 4ft and the wind is onshore, so it’s back to being ordinary.

So, to wrap it up: don’t even think about it until the 27th. The one clear, glassy, standout session is the morning of Tuesday the 28th of July. That’s your window. The water temperature is around 81°F, which is pretty normal for this time of year, just a slight positive anomaly.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Fri night. Warm (max 31°C on Thu afternoon, min 26°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Tue afternoon. Warm (max 31°C on Wed morning, min 26°C on Sun night). Wind will be generally light.

Thu
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
PM
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
0
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)
0.7
SSW
8
0.5
SSW
7
0.3
ESE
10
0.3
SE
10
0.3
SE
10
0.3
ESE
9
0.3
E
9
0.5
SE
8
0.3
ESE
9
0.3
ESE
9
0.4
SE
9
0.2
SSE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
11
0.3
ESE
11
0.3
ESE
11
0.3
ESE
11
0.3
SE
12
0.3
SE
11
Wave Graph
Metric surfscale
Energy kJ
56
26
19
18
14
15
13
33
17
17
20
7
16
16
23
23
23
22
24
19
Wind (km/h)
10
SSE
5
NW
5
E
5
SE
5
W
10
SSE
15
SSE
10
SSW
5
S
15
S
5
SW
5
S
10
S
5
WNW
5
ESE
5
S
5
WNW
5
E
5
S
5
WNW
Wind State
on
off
glassy
on
glassy
on
on
cross-on
on
on
glassy
on
cross-on
glassy
glassy
cross-on
cross-off
glassy
glassy
glassy
High Tide
8:02PM1.79m
7:16AM1.84m
8:36PM1.76m
8:04AM1.75m
9:08PM1.72m
8:52AM1.63m
9:39PM1.67m
9:44AM1.49m
10:10PM1.62m
10:46AM1.35m
10:42PM1.56m
12:10PM1.25m
11:21PM1.50m
Low Tide
1:35AM0.79m
1:58PM0.09m
2:18AM0.73m
2:36PM0.26m
3:02AM0.69m
3:11PM0.45m
3:49AM0.67m
3:45PM0.65m
4:40AM0.66m
4:20PM0.84m
5:41AM0.66m
5:01PM1.01m
clear
clear
part cloud
part cloud
rain showers
clear
part cloud
clear
clear
part cloud
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:03
5:03
5:05
5:05
5:05
5:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:13
7:12
7:12
7:12
7:10
7:09
7:09
 mm
1
2
2
1
6
1
3
Temp °C
31
28
31
31
27
30
30
27
30
29
27
30
30
27
30
30
28
31
30
28
Feels °C
35
33
34
35
32
34
34
32
34
33
33
35
35
32
36
36
34
36
35
34
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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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