Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 am 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
24.8° C
1.7° 

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


Asakawa surf forecast from 11 Jul 2026:

  • Best quality surf: Sunday 12 Jul, 6AM (local time) - 11ft (3.5m), 16s period, SSW swell with glassy winds.
  • Most powerful swell: Sunday 12 Jul, 6AM (local time) - 11ft (3.5m), 16s period, SSW swell with 6,226 kJ wave energy.
  • Next surfable swell (1★+): Sunday 12 Jul, 6AM (local time) - 11ft (3.5m), 16s 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 Sunday (Jul 12) at 6AM. The primary swell is predicted to be 3.5m 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 3.5m 16s and forecast to arrive on Sunday (Jul 12) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Jul 14) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 12th Jul)11ft (3.5m) 16s
Best Surf 6AM (Sun 12th Jul)11ft (3.5m) 16s
Most Powerful 6AM (Sun 12th Jul)11ft (3.5m) 16s

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


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

We’re staring down the barrel of a serious run of big, clean surf right out of the gate at Asakawa. This is a point break, and it’s about to get a proper hammering from a powerful south-southwest groundswell. Sunday morning is the real standout: a solid 10ft swell from the SSW with a meaty 16-second period, pumping in a massive 4895 units of energy. The wind is dead glass, absolutely zero. This is expert territory, no question – 10ft is a beast, and with that long period, it’s going to be holding up and walling up nicely on the point. The vibe will be electric, but you need to know what you’re doing. Sunday afternoon holds at 8ft, still glassy, still excellent for experienced surfers. The water temp is about average for the time of year, so nothing wild there.

Monday morning, the 13th, is still a great option. The swell drops to a very solid 5ft with 12-second period, still glassy with that slight air. It’s a very good session, but the energy is already dropping (707). Monday afternoon, the wind swings cross-on and a risk of thunderstorms pops up, so the quality takes a big hit. From Tuesday the 14th onward, the swell drops fast and the conditions get ordinary. We’re looking at a few days of small, weak surf and mostly onshore or cross-off winds. Don’t bother paddling out from Tuesday through Friday the 17th – it’s tiny, messy, and the energy is in the two-digit range (80-70). That’s a proper lull.

Then we get a pulse of something different. Saturday the 18th sees a new east-southeast swell arrive, but it’s a tricky one. The morning is 3ft with a long 14-second period, but it’s cross-shore wind. The afternoon jumps to 8ft (1670 energy), but it’s a cross-on mess with that risk of thunderstorms again. The following days are mostly cross-on and onshore, with the swell staying in the 3ft to 7ft range. It’s not going to be a clean paddle.

The better news comes back around Monday the 20th. The morning is glassy with a 5ft swell from the SE, offering good, clean conditions. Tuesday the 21st morning is also glassy, with 4ft. The real highlight of the second week is Wednesday the 22nd morning: glassy conditions, 4ft from the ESE, and the energy is decent at 281. It’s not the huge stuff of the first weekend, but it’s clean and rideable – a solid session for a wider range of skills. After that, the week trails off into small, ordinary, and mostly onshore conditions through the 27th.

The Standout: Without a doubt, Sunday the 12th morning at Asakawa. That 10ft, 16-second, glassy SSW swell is a proper groundswell event. It’s big, it’s clean, and it’s powerful. This is a day for the experienced crew only – the point will be firing. The crowd is listed as “sometimes,” but with a swell this quality, you’d be lucky not to have company.

The second best window is Wednesday the 22nd morning. It’s a smaller, cleaner, and more accessible session with glassy conditions and a solid 4ft ESE swell.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sun afternoon. Warm (max 32°C on Tue morning, min 26°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 31°C on Wed morning, min 25°C on Fri night). Wind will be generally light.

Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
5
3
3
3
2
2
1
1
1
1
0
0
1
0
0
0
0
1
3
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SSW
16
2.5
SSW
14
2
SSW
13
1.6
SSW
12
1.5
SSW
11
1.1
SSW
11
1
SSW
10
0.9
SSW
10
0.7
SSW
9
0.6
SSW
9
0.6
SSW
9
0.4
ESE
10
0.5
SSW
8
0.6
SSW
8
0.4
SSW
8
0.3
ESE
10
0.3
ESE
9
0.6
SE
8
1.2
ESE
15
1.8
ESE
13
2.5
ESE
11
Wave Graph
Metric surfscale
Energy kJ
4895
2763
1256
683
512
286
209
166
86
64
61
39
38
50
24
18
17
45
627
1137
1565
Wind (km/h)
5
SSE
5
SSW
5
W
5
SE
5
SE
5
NNW
5
NE
5
ESE
5
NW
5
SE
10
SSE
5
WSW
5
ESE
10
SE
5
S
10
SE
10
SSE
0
NW
5
E
10
ESE
10
NE
Wind State
glassy
cross-on
cross-off
glassy
glassy
off
glassy
glassy
glassy
glassy
on
cross
glassy
on
glassy
on
on
glassy
glassy
cross-on
cross-off
High Tide
5:16PM1.67m
3:49AM1.73m
6:04PM1.75m
4:46AM1.81m
6:47PM1.80m
5:39AM1.86m
7:26PM1.81m
6:28AM1.88m
8:02PM1.79m
7:16AM1.84m
8:36PM1.76m
8:04AM1.75m
9:08PM1.72m
Low Tide
10:04AM0.12m
10:28PM1.08m
10:59AM-0.01m
11:22PM1.02m
11:49AM-0.08m
00:08AM0.95m
12:35PM-0.09m
00:52AM0.87m
1:18PM-0.04m
1:35AM0.79m
1:58PM0.09m
2:18AM0.73m
2:36PM0.26m
part cloud
thunderstorm
part cloud
part cloud
thunderstorm
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:00
5:01
5:01
5:01
5:03
5:03
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:14
7:14
7:14
7:13
7:13
7:12
7:12
 mm
1
1
1
Temp °C
31
30
27
31
30
28
32
32
29
31
31
28
30
30
27
29
29
25
30
30
27
Feels °C
35
35
32
35
35
33
36
37
34
34
35
33
33
34
33
33
33
30
33
33
31
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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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