Asakawa Surf Break

Asakawa Surf Forecast and Surf Report

Lat Long: 33.63° N 134.38° E

Issued: 2 am 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
24.4° C

1.1°C colder than average for this time of year

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


Asakawa surf forecast from 4 Jul 2026:

  • Best quality surf: Saturday 11 Jul, 6AM (local time) - 13ft (4.0m), 17s period, S swell with glassy winds.
  • Most powerful swell: Friday 10 Jul, 9PM (local time) - 15ft (4.5m), 18s period, S swell with 11,717 kJ wave energy.
  • Next surfable swell (1★+): Sunday 5 Jul, 9AM (local time) - 2.5ft (0.8m), 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 Sunday (Jul 05) at 9AM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.2m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 4.5m 18s and forecast to arrive on Friday (Jul 10) at 9PM. Winds are predicted to be cross-onshore 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 07) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Sun 5th Jul)2.5ft (0.8m) 7s
Best Surf 6AM (Sat 11th Jul)13ft (4.0m) 17s
Most Powerful 9PM (Fri 10th Jul)15ft (4.5m) 18s

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


Updates in  hr  min  s Forecast update imminent

Right, listen up. Rusty here, lookin’ at the charts for Asakawa. It’s a point break, and it’s *inconsistent*, so when it fires, you sit up and pay attention. Water temp is sittin’ at 76°, a touch colder than what we’re used to for early July – about a degree off, so grab a spring suit.

We’re lookin’ at a slow burner. This Sunday morning, July 5th, there’s a tiny pulse of 3 ft swell rollin’ in from the SSW, period’s a weak 7 seconds. Combined wave energy’s a measly 82, so barely a ripple. But here’s the kicker – it’s glassy. Glassy! That’s your window if you’re desperate for a splash. The afternoon turns ugly with a risk of storms, so don’t bother.

Monday the 6th morning is crap – onshore wind from the SW killing a 2 ft swell. But Monday afternoon? The wind drops to zero, glass again. That 3 ft swell from the SE has got some juice, with a 14-second period giving a combined energy of 459. That’s our first real glimmer. It’s clean, but the swell’s tiny.

Tuesday the 7th morning pushes to 3 ft from the SE, period stretching to 12 seconds, energy at 593. Surfable, but ‘marginal’ is the word. Tuesday afternoon builds to 4 ft with a cracking 15-second period – combined energy jumps to 1026. That’s a moderate energy groundswell, but the wind is onshore. Still, looks better than the morning.

Wednesday the 8th is when the ocean wakes up. Morning has 7 ft at 16 seconds – combined energy 4139 – and glassy wind! That’s serious, powerful groundswell. For a point break like Asakawa, that long period is gonna wrap in beautifully. It’s over 5 ft, so beginners beware, but this is the goods for intermediates. Wednesday afternoon swells to 10 ft at 17 seconds (5904 energy), still onshore wind though, which will chop it up. The mornings are your friend.

Thursday the 9th holds 10 ft from the SSE, 16-second period, energy through the roof at 6318. Onshore wind again. The swell is there, but the wind is gonna make it a battle.

Now, the standout. It’s Saturday morning, July 11th. 13 ft of pure S groundswell, 16-second period, combined energy is a thumping 7570. And the wind is glassy. Glassy! That’s exceptional, experts-only territory – over 8 ft, so don’t even think about it if you’re not experienced. The sets will be long and powerful. This is the one to circle.

Sunday the 12th morning backs down to a still-chunky 8 ft from the SSW, 15-second period, and it’s glassy again. Excellent for experienced surfers. The afternoon gets a cross-on wind, so morning rules.

The second week fades. Monday the 13th sees the swell drop back to 4 ft from the S with some glass, and Tuesday the 14th is similar – 3 ft and glass. The energy is weak (255-580). Wednesday and Thursday are pretty weak and ordinary, with small 3 ft to 3 ft stuff.

There’s a long gap of pretty average to poor conditions from July 15th through the 19th – tiny swells, onshore winds. Nothing to write home about.

Then, on the far horizon, Monday morning July 20th, a late pulse of 4 ft from the S shows up, 10-second period, combined energy 419, with glassy conditions. It’s a long way out, so don’t bet the farm on it, but it’s worth keeping an eye on.

Bottom line: For this inconsistent point, the real magic is the glassy mornings during the big pulse. Saturday July 11th morning is the clear winner. Sunday the 12th morning is a close second. After that, the window slams shut. Get it while it’s clean.

Rusty.

Short Range Forecast

Moderate rain (total 14mm), heaviest on Sun afternoon. Warm (max 29°C on Mon morning, min 24°C on Sun morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Fri night. Warm (max 27°C on Fri morning, min 22°C on Thu night). Wind will be generally light.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
AM
PM
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
2
2
1
2
3
4
4
4
4
4
5
6
6
8
6
4
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
7
0.4
SE
9
0.4
SW
6
0.6
SE
15
0.9
SE
14
1
SE
13
0.8
SE
15
1.3
SE
15
2
SE
16
2.1
SE
16
3
SE
17
3
SSE
16
3
SSE
16
3
SSE
16
3
SSE
16
4
S
17
4
S
17
4
S
18
4
S
16
3.5
SSW
16
3.5
SSW
16
Wave Graph
Metric surfscale
Energy kJ
50
32
9
149
301
347
301
753
2027
2157
4550
4585
4709
3703
4247
8399
10478
10866
7570
6887
5326
Wind (km/h)
5
ESE
10
SSE
10
SE
15
SW
0
SSE
5
WNW
10
SE
5
SSE
10
SSE
5
SE
10
SSE
5
SSE
10
SE
10
SSE
0
N
10
SE
15
SSE
5
SW
5
S
15
SSW
5
WNW
Wind State
glassy
on
on
cross-on
glassy
glassy
on
on
on
on
on
on
on
on
glassy
on
on
cross-on
glassy
cross-on
cross-off
High Tide
9:43PM1.63m
9:16AM1.51m
10:17PM1.62m
10:17AM1.42m
10:55PM1.60m
11:38AM1.36m
11:41PM1.58m
1:20PM1.35m
00:36AM1.58m
3:00PM1.43m
1:41AM1.60m
4:18PM1.55m
2:47AM1.65m
Low Tide
3:02PM0.38m
3:36AM0.81m
3:39PM0.51m
4:28AM0.75m
4:23PM0.66m
5:30AM0.68m
5:17PM0.83m
6:40AM0.57m
6:30PM0.98m
7:54AM0.44m
8:00PM1.08m
9:03AM0.28m
9:23PM1.10m
cloud
thunderstorm
thunderstorm
rain showers
thunderstorm
clear
part cloud
light rain
light rain
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
rain showers
rain showers
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
4:58
4:58
4:58
4:58
5:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:15
7:15
7:15
 mm
3
5
1
2
1
2
2
2
2
1
Temp °C
24
25
25
29
29
26
26
24
24
25
26
24
25
26
22
27
27
25
26
27
25
Feels °C
29
29
29
32
35
31
29
28
28
29
29
28
27
28
26
29
29
29
30
30
29
Swell 1
Height (m)
Direction
Period (s)
0.8
SSW
7
0.6
SSW
6
0.4
SW
6
0.6
SE
15
0.9
SE
14
1
SE
13
1
SE
12
1.3
SE
15
2
SE
16
2.1
SE
16
3
SE
17
3
SSE
16
3
SSE
16
3
SSE
16
3
SSE
16
4
S
17
4
S
17
4
S
18
4
S
16
3.5
SSW
16
3.5
SSW
16
Energy kJ
50
32
9
149
301
347
301
753
2027
2157
4550
4585
4709
3703
4247
8399
10478
10866
7570
6887
5326
Swell 2
Height (m)
Direction
Period (s)
0.3
SE
10
0.4
SE
9
0.2
ESE
8
0.6
ESE
4
0.1
S
9
0.8
SSW
6
0.8
SE
15
1
SE
12
0.9
SSE
21
1.7
SSE
18
0.8
SSE
21
0.9
E
9
1.5
S
18
1.7
S
18
1.8
S
18
0.3
SE
12
Energy kJ
16
20
7
13
2
47
276
264
777
1877
605
122
1487
1822
2111
23
Swell 3
Height (m)
Direction
Period (s)
0.3
ESE
9
0.1
E
11
0.2
SSE
8
0.4
SE
10
0.1
S
9
0.4
SE
18
0.4
SSW
6
0.4
SW
6
0.8
E
8
0.9
SSE
21
0.7
E
8
Energy kJ
15
3
7
27
2
79
16
9
86
749
60
Wind waves
Height (m)
Direction
Period (s)
0.2
E
4
0.3
ESE
3
0.5
SE
4
0.7
SW
6
1.3
SSW
7
0.4
NNE
3
0.9
E
8
0.9
E
9
0.9
E
8
Energy kJ
1
2
6
39
154
3
105
122
108
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
2
2
2
4
4
5
6
5
5
5
5
9
9
9
6
9
5
Distance (km)
0
19
30
11
0
0
19
11
19
14
11
11
19
19
0
19
11
2
0
30
0
Best forecast wave conditions in Shikoku
Rating
(10 max)
1
1
1
2
2
2
2
4
4
6
6
6
6
5
7
9
9
9
9
9
9
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
2
2
3
2
3
4
4
8
6
6
6
5
7
9
9
9
9
9
9
Header Global
Rating
(10 max)
5
9
7
5
5
8
7
5
5
9
8
9
9
6
6
5
5
4
6
5
5
  • 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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