Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 8 am 03 Aug 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
29.0° 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 3 Aug 2026:

  • Best quality surf: Wednesday 5 Aug, 6PM (local time) - 20ft (6.0m), 17s period, ESE swell with cross-shore winds.
  • Most powerful swell: Thursday 6 Aug, 9PM (local time) - 21ft (6.5m), 17s period, SSE swell with 24,163 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 4 Aug, 9PM (local time) - 15ft (4.5m), 16s period with ESE 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 Tuesday (Aug 04) at 9PM. The primary swell is predicted to be 4.5m and 16s period with a secondary swell of 3.5m and 16s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Asakawa in the next 16 days are 6.5m 17s and forecast to arrive on Thursday (Aug 06) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 4th Aug)15ft (4.5m) 16s
Best Surf 6PM (Wed 5th Aug)20ft (6.0m) 17s
Most Powerful 9PM (Thu 6th Aug)21ft (6.5m) 17s

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


The Lowdown

G’day, I’m Rusty, and I’ve been watchin’ the charts for Asakawa like a hawk. We’ve got a proper run of surf comin’ through, but it’s a bit of a slow burner at first. The water’s a touch warmer than normal for this time of year, sittin’ at 84°, which is a nice little bonus for the early paddles.

The joint is inconsistent, so when it fires, you gotta be on it. It’s a point break that’s fairly exposed to swell, and it loves a clean SE angle. The first few days on Monday 3 August and Tuesday 4 August are a bit marginal with cross-on winds making things messy, but the swell is building. By Tuesday afternoon, the energy jumps to 13ft from the ESE with a 17-second period — that’s a proper groundswell with 14569 energy units. Winds are light and onshore, which is a bit of a bummer, but the size has got some punch.

The real standout is Wednesday 5 August. The swell is 15ft to 16ft from the SE, still with that long 17-second period, and the combined energy is massive, hitting 12158 and 15328. Winds are a light cross-shore, which will keep things reasonably clean. This is big, powerful surf — over 8ft, so it’s strictly for experts. The point break setup will handle that long period nicely, with waves jackin’ up and wrappin’ around. This is the best on offer, no doubt.

Thursday 6 August gets even bigger — 20ft to 21ft from the SSE, energy over 20,000. That’s a beast, but cross-shore winds are pickin’ up to a moderate breeze, and the comment says it’s too big for this break. For the brave, it’s a foaming monster, but I’d say it’s more a kite surfers’ paradise than a paddle session. After that, Friday 7 August through to Sunday 10 August sees the swell drop and the wind turn choppy and onshore, with rain and storms. Quality’s poor, and the energy fades from 19185 down to 1507. A gap of a few days with nothin’ worthwhile.

From Monday 11 August to Friday 14 August, the swell dips under 5ft, with periods around 10 to 13 seconds, and energy under 1300. Winds are mostly light or cross-off, so there’s clean little waves on offer, but nothin’ to get excited about — marginal at best.

Then Saturday 16 August shows a flicker of life: a 6ft ESE swell with 11 seconds and cross-off wind, giving 863 energy units and a clean surface. Sunday 17 August is a real standout for the second week. The swell builds to 12ft from the ESE, 13 seconds, and the wind goes glassy in the morning. 4409 energy units, excellent conditions for experienced surfers. That’s a solid, clean wave that’ll hold up well on the point. Monday 18 August is also glassy with 13ft swell from the ESE, 11 seconds, and 3320 energy — excellent for the same crew. Long-range, so it’s promising but not set in stone.

Overall, Wednesday 5 August is the big day for the first week — big, powerful, expert-only. Sunday 17 August is the pick for the second week, with glassy conditions and solid size. Keep an eye on the charts, as the inconsistency means you gotta be ready to pounce.

Rusty

Short Range Forecast

Light rain (total 4mm), mostly falling on Mon morning. Warm (max 31°C on Mon morning, min 25°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 32mm), heaviest during Sat afternoon. Warm (max 31°C on Thu morning, min 25°C on Sat night). Wind will be generally light.

Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
3
5
8
7
8
8
9
!
!
!
7
0
8
5
0
3
3
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
ESE
16
1.7
ESE
16
2.1
ESE
17
3
ESE
16
4
ESE
17
4
ESE
17
4.5
SE
17
5
SE
17
5.5
SE
16
6
SE
17
6.5
SSE
17
6.5
SSE
17
6
SSE
16
4.5
S
15
4.5
S
15
4
SSW
15
3.5
SSW
16
3.5
SSW
15
3
SSW
15
2.5
SSW
14
1.7
SSW
14
Wave Graph
Metric surfscale
Energy kJ
1223
1393
2437
4324
8554
8569
12158
15328
16477
20742
22325
22995
17626
8891
8338
7092
5700
4971
4060
2593
1126
Wind (km/h)
10
E
10
SE
10
ESE
10
SE
10
SSE
5
ESE
15
ENE
10
E
15
NE
20
ENE
25
E
20
ENE
25
ENE
25
E
15
NE
20
E
20
E
15
ENE
15
ENE
20
ESE
10
E
Wind State
cross-on
on
cross-on
cross-on
on
glassy
cross
cross
cross-off
cross
cross-on
cross
cross
cross-on
cross-off
cross
cross-on
cross
cross
cross-on
cross-on
High Tide
8:51PM1.72m
9:03AM1.58m
9:19PM1.69m
9:59AM1.47m
9:52PM1.64m
11:18AM1.36m
10:35PM1.58m
1:18PM1.32m
11:38PM1.53m
3:21PM1.41m
1:11AM1.52m
4:29PM1.55m
2:42AM1.58m
Low Tide
2:31PM0.44m
3:01AM0.57m
3:03PM0.60m
3:47AM0.54m
3:40PM0.78m
4:44AM0.52m
4:27PM0.97m
6:00AM0.50m
5:43PM1.14m
7:33AM0.43m
7:55PM1.22m
8:57AM0.31m
9:34PM1.16m
rain showers
thunderstorm
thunderstorm
part cloud
clear
part cloud
clear
clear
clear
clear
clear
rain showers
rain showers
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:15
5:16
5:16
5:16
5:18
5:18
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
6:59
6:59
6:58
6:57
6:55
 mm
1
1
2
2
2
2
4
8
9
5
Temp °C
31
29
27
29
29
26
30
31
27
31
31
28
30
30
27
27
27
26
28
28
25
Feels °C
35
33
31
32
32
30
31
33
30
32
31
30
30
30
30
29
29
29
28
28
27
  • 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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