Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 pm 08 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
24.6° C
1.5° 

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


Asakawa surf forecast from 8 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), 18s period, S swell with 10,310 kJ wave energy.
  • Next surfable swell (1★+): Thursday 9 Jul, 12AM (local time) - 8ft (2.5m), 15s period with SSE 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 Thursday (Jul 09) at 12AM. The primary swell is predicted to be 2.5m and 15s period with a secondary swell of 0.5m and 8s. 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 18s 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+)12AM (Thu 9th Jul)8ft (2.5m) 15s
Best Surf12AM (Sat 11th Jul)13ft (4.0m) 17s
Most Powerful 3AM (Sat 11th Jul)13ft (4.0m) 18s

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


Alright folks, Rusty here. Let’s have a good look at what’s on the cards for Asakawa. We’ve got a slow start, but there’s a proper pulse of energy headed our way if you can wait it out.

Right now, the water is sitting at 76.3°F, which is actually a bit colder than we’d normally expect for this time of year. That’s a touch unusual, but nothing that’ll put you off a good session.

The first few days are a real write-off. Wednesday and Thursday (8th and 9th July) are all marginal with messy onshore winds from the SSE and surf around 7.2ft to 9.8ft, but the quality is just not there. The wave energy is strong (3231 to 3559), but the conditions are poor. Best to sit this out.

The real standout arrives on Friday morning, 10th July. Asakawa is looking at a solid 11.5ft of southerly swell with a very long 17-second period. That’s proper groundswell. The wind is glassy – dead calm. This is exceptional surf, but I have to be straight with you: at 11.5ft, this is strictly for the experienced crew. The combined energy is huge at 6883, so you’ll feel the power. The swell direction from the south is right in the zone for this spot. If you’re not an expert, stay on the beach and watch the show.

Saturday 11th July stays big – another 13.1ft of south swell (16-17 seconds) with strong energy in the 9000s. The morning has a light cross-on breeze, which isn’t perfect but it will still be a big, powerful day. Again, only for the experts.

Sunday 12th July morning will see the swell drop a bit to 9.8ft from the SSW, and it’s glassy again. That’s excellent for experienced surfers, but the energy is still chunky at 3873. By Sunday afternoon, a risk of thunderstorms and a cross-on wind kicks in, making things messy.

After that, the surf pretty much dries up for nearly a week. From Monday 13th through to Saturday 18th July, you’re looking at weak, small waves (1.3ft to 5.6ft) with poor quality. The energy drops right off, into the low hundreds. Unless you’re desperate for a paddle, it’s not worth the effort.

Then, on Sunday 19th July, the conditions turn back in our favour. We get 7.5ft of ESE swell with a clean, cross-off wind from the NNE. The energy jumps back up to 1528. This is clean, excellent surf for experienced surfers and a much more manageable size.

Monday 20th July morning keeps it going with 5.6ft of ESE swell and a cross-off breeze, very good quality. Tuesday 21st July morning looks glassy with 4.3ft of ESE swell – a nice, clean, smaller option for a wider range of ability.

Beyond that, the swell fades out again into the end of the week, with small, ordinary conditions.

So, to sum it up: the absolute best on offer is Friday 10th July morning – it’s a proper, clean groundswell bomb. The second pick would be Sunday 19th July morning, which is cleaner and more manageable for experienced surfers after the long flat spell.

Stay safe, and pick your moment.

Short Range Forecast

Mostly dry. Warm (max 28°C on Fri morning, min 22°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Sun afternoon. Warm (max 30°C on Sun morning, min 24°C on Sat night). Wind will be generally light.

Wed
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
3
4
3
2
5
6
5
8
7
5
5
4
2
2
2
1
2
1
1
1
0
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)
2.2
SE
16
2.5
SSE
15
2.5
SSE
15
3
SSE
15
3
SSE
15
3.5
S
17
4
S
17
4
S
17
4
S
17
4
SSW
17
3.5
SSW
17
3
SSW
16
2.3
SSW
14
1.8
SSW
12
1.2
S
11
1.3
SSW
11
1.1
SSW
11
0.9
SSW
10
0.8
SSW
10
0.7
SSW
9
0.6
SSW
9
Wave Graph
Metric surfscale
Energy kJ
2314
3156
3009
3513
3774
6883
8279
9959
9677
9293
7667
3865
2078
947
350
430
292
163
125
86
64
Wind (km/h)
10
SSE
5
S
10
SSE
10
SSE
5
W
5
S
10
S
5
SW
5
S
15
S
10
SW
5
S
15
SSW
5
WSW
5
ESE
10
S
5
WNW
0
SSE
5
ESE
0
NW
10
SE
Wind State
on
glassy
on
on
glassy
glassy
on
glassy
cross-on
on
cross
glassy
cross-on
cross
glassy
cross-on
glassy
glassy
glassy
glassy
cross-on
High Tide
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
6:47PM1.80m
5:39AM1.86m
Low Tide
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
00:08AM0.95m
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
4:58
5:00
5:00
5:01
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
7:14
7:14
7:14
7:13
 mm
3
3
2
3
1
1
Temp °C
25
24
27
27
23
28
28
25
28
28
25
30
29
26
29
29
26
30
30
28
29
Feels °C
29
28
29
29
27
31
31
30
32
31
30
33
32
31
34
33
31
34
35
33
34
  • 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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