Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 pm 09 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
24.7° 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 9 Jul 2026:

  • Best quality surf: Saturday 11 Jul, 6AM (local time) - 13ft (4.0m), 17s period, S swell with glassy winds.
  • Most powerful swell: Saturday 11 Jul, 12PM (local time) - 13ft (4.0m), 17s period, SSW swell with 9,979 kJ wave energy.
  • Next surfable swell (1★+): Friday 10 Jul, 12AM (local time) - 10ft (3.0m), 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 Friday (Jul 10) at 12AM. The primary swell is predicted to be 3.0m and 15s period with a secondary swell of 1.3m and 18s. 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 17s and forecast to arrive on Saturday (Jul 11) at 12PM. Winds are predicted to be 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 14) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 10th Jul)10ft (3.0m) 15s
Best Surf 6AM (Sat 11th Jul)13ft (4.0m) 17s
Most Powerful12PM (Sat 11th Jul)13ft (4.0m) 17s

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


Alright folks, Rusty here. We’ve got a solid window of proper swell coming through, but it’s a window that closes pretty fast. The early part of the outlook is where the real action is, so don’t sleep on it.

The first recommendation is for Asakawa, a point break that’s fairly exposed but inconsistent. The water’s sitting at 77°F, which is a bit colder than normal for this time of year, so you might want an extra layer.

We kick off on Thursday the 9th of July with a solid 10ft SSE swell rolling in, but it’s coming with a light onshore breeze and the call is for marginal conditions. The energy is already pumping with a combined swell energy of 3559, so there’s power in the water, but it’s not clean yet. Friday the 10th builds on that – we’re looking at 12ft from the south with a very long 17-second period, pushing the energy up to 6993. The wind is light onshore again, so it’s still a bit messy, but the size is there.

The standout window is Saturday the 11th into Sunday the 12th. Saturday morning delivers a 13ft south swell with a 17-second period and a combined energy of 9677. That’s serious groundswell. The wind is a light onshore, so it’s not perfect, but for experienced surfers, that’s a proper session. Sunday morning, though, is the pick of the bunch. The swell drops a touch to 10ft from the SSW, but the wind goes glassy – dead calm. The energy is still massive at 4556, and the conditions are described as excellent for experienced surfers. That’s the one to aim for. The wave period is 16 seconds, so this is a long-period groundswell that will be lining up beautifully on a point break like Asakawa, though it might break a bit straight at the beach.

After Sunday, the size drops fast. Monday the 13th still has a clean 5ft with glassy winds but the energy is down to 692. By Tuesday the 14th, it’s below 3ft and the recommendations are poor. From the 15th of July right through to the 24th, we’re looking at a long stretch of small, weak surf. Swell heights hover around 1ft to 4ft, with most days showing poor or marginal conditions. The energy dips into the low hundreds and even double digits, so there’s not much to get excited about. There’s a brief uptick around the 18th and 19th with 4ft from the SE and a glassy morning on the 18th, but it’s undersized and inconsistent.

For the real standout, it’s Sunday the 12th of July at Asakawa. Big 10ft SSW groundswell, glassy conditions, and that long period – it’s a proper day for the experienced crew. After that, it’s a long wait. The second week is mostly flat or tiny, with only a few moments of glassy 2ft to 3ft that are surfable but nothing special.

Stay on it, and get out there before it fades.

Rusty

Short Range Forecast

Mostly dry. Warm (max 30°C on Sun morning, min 23°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 19mm), heaviest on Sun night. Warm (max 29°C on Sun afternoon, min 24°C on Tue night). Wind will be generally light.

Thu
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
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
5
5
4
5
7
6
7
5
4
3
3
2
2
0
0
1
1
0
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)
3
SSE
15
3
SSE
15
3.5
S
17
3.5
S
16
4
S
17
4
S
17
4
SSW
17
4
SSW
17
3
SSW
16
2.4
SSW
14
1.8
SSW
13
1.6
SSW
12
1.1
S
10
1.2
SSW
11
1
S
10
0.9
SSW
10
0.7
SSW
9
0.6
SSW
9
0.5
SSW
9
0.5
SSW
8
0.4
ESE
9
Wave Graph
Metric surfscale
Energy kJ
3513
3640
6993
7220
7851
9677
9976
8777
4548
2318
1057
669
230
350
204
163
90
64
45
40
25
Wind (km/h)
10
SSE
5
WNW
5
SSE
10
SSE
5
WSW
10
S
15
S
5
W
5
SW
5
SSW
5
W
0
S
5
ESE
10
N
10
ENE
5
SSE
5
SSW
5
S
10
SE
5
ENE
10
E
Wind State
on
glassy
on
on
cross
on
cross-on
cross-off
glassy
glassy
cross-off
glassy
glassy
cross-off
cross
on
glassy
glassy
cross-on
glassy
cross-on
High Tide
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
7:26PM1.81m
6:28AM1.88m
Low Tide
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
12:35PM-0.09m
00:52AM0.87m
clear
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cloud
thunderstorm
mod rain
light rain
thunderstorm
rain showers
rain showers
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<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
5:00
5:00
5:01
5:01
5:01
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:14
7:14
7:14
7:13
7:13
 mm
2
7
1
3
4
1
1
1
3
3
Temp °C
27
24
28
28
25
29
29
25
30
29
26
27
29
25
27
27
25
28
27
25
26
Feels °C
30
28
31
31
29
33
32
29
34
34
30
32
34
29
31
31
29
31
30
30
30
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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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