Asakawa Surf Break

Asakawa Surf Forecast and Surf Report

Lat Long: 33.63° N 134.38° E

Issued: 8 pm 02 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
24.3° C

Slightly cooler than normal

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


Asakawa surf forecast from 2 Jul 2026:

  • Best quality surf: Friday 10 Jul, 3AM (local time) - 15ft (4.5m), 18s period, S swell with glassy winds.
  • Most powerful swell: Friday 10 Jul, 3AM (local time) - 15ft (4.5m), 18s period, S swell with 11,856 kJ wave energy.
  • Next surfable swell (1★+): Friday 3 Jul, 6AM (local time) - 2.5ft (0.7m), 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 Friday (Jul 03) at 6AM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.4m and 8s. The wind is predicted to be offshore 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 3AM. 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 4s period and expected on Friday (Jul 03) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 3rd Jul)2.5ft (0.7m) 7s
Best Surf 3AM (Fri 10th Jul)15ft (4.5m) 18s
Most Powerful 3AM (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

Alright, Rusty here. Let’s talk about what we’ve got on offer for Asakawa, a point break that needs swell from the SE to really light up – and it's inconsistent, so we'll need some patience.

It’s a slow start. Through the first few days – Friday the 3rd to Sunday the 5th – the surf is tiny, nowhere near rideable. We’re talking 1 ft to 2 ft of weak, short-period swell, with a mix of rain and onshore wind. Not much to get excited about, and the water temp is about average for this time of year.

There is a bit of a turning point heading into Monday the 6th of July. The morning brings a glassy 2 ft swell from the SE with a very long period of 15 seconds – groundswell energy is starting to build (combined energy of 161). It's still small and ordinary, but the glassy conditions are a positive. The afternoon sees the swell pick up to 3 ft with a 14-second period (290 energy), but the wind goes cross-on, so it’s a bit messy.

The real energy arrives on Tuesday the 7th. The swell jumps to 6 ft in the morning from the SE, with a 16-second period that screams groundswell – strong energy, around 1670. This is big enough to be challenging for beginners, and with the wind coming straight onshore, it’s a bit lumpy, but the power is there. By the afternoon, the swell hits 7 ft (energy 2758), which is expert territory.

The pulse continues and peaks around Wednesday the 8th and Thursday the 9th – we’re seeing 10 ft to 13 ft of SSE swell with periods of 16-17 seconds, and combined energy climbing from 5302 all the way to 10090. That’s serious power. The wind stays onshore though, so it’s raw and challenging, made for experienced surfers only.

Friday the 10th of July is the standout, no question. The morning cranks a near-perfect setup: 15 ft of S swell with a 17-second period and glassy conditions. That’s exceptional energy (13661) and the cleanest window of the whole run. This is a big, powerful groundswell that will work best on the point, with those long, clean walls. For experts only at this size, and with it being inconsistent, you’ll want to time it right. The afternoon sees the wind shift a bit cross-on, making it still good but not as pristine.

Saturday the 11th is still a massive day with 12 ft from the SSW and a 16-second period – glassy in the morning, which is beautiful, but the energy drops a notch to 6742. The afternoon goes onshore. From Sunday the 12th onward, the swell steadily fades. A few brief windows of glassy conditions crop up, like Thursday the 16th morning with 4 ft from the SSW (315 energy), but nothing that holds a candle to that Friday.

So, if you’re an experienced surfer looking to charge, Friday the 10th of July is your day. The morning session, with that glassy 15 ft SE groundswell, is the absolute pick of the bunch. Expect some crowds though, as Asakawa can get busy when it’s on.

Rusty.

Short Range Forecast

Heavy rain (total 25mm), heaviest during Sat morning. Warm (max 26°C on Fri morning, min 22°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 21mm), heaviest during Mon morning. Warm (max 27°C on Tue morning, min 23°C on Sun night). Wind will be generally light.

Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thu
9
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
0
0
0
0
0
0
0
0
0
1
1
1
3
3
3
4
3
5
5
6
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)
0.9
SSW
7
0.5
SW
7
0.3
ESE
9
0.6
SW
6
0.3
ESE
9
0.7
SSE
4
0.3
ESE
9
0.5
SSW
6
0.4
SE
9
0.5
SE
4
0.5
SE
15
0.8
SE
14
1.1
SE
12
1.8
SE
16
2.2
SE
17
2.5
SE
17
3
SE
17
3
SSE
16
3.5
SSE
17
4
SSE
17
4
SSE
17
Wave Graph
Metric surfscale
Energy kJ
86
22
16
24
16
13
15
22
19
7
106
231
346
1651
2758
3597
5302
4646
6721
7874
9061
Wind (km/h)
10
N
10
NE
5
ESE
5
SW
10
SE
5
NW
5
NE
10
SSE
10
S
5
SSW
5
E
10
E
5
SE
5
SE
10
SSE
10
SE
10
SSE
15
SSE
5
S
10
S
10
SSE
Wind State
off
cross-off
glassy
glassy
on
glassy
glassy
on
on
cross-on
glassy
cross-on
on
on
on
on
on
on
cross-on
on
on
High Tide
7:07AM1.69m
8:41PM1.65m
7:45AM1.65m
9:11PM1.64m
8:27AM1.59m
9:43PM1.63m
9:16AM1.51m
10:17PM1.62m
10:17AM1.42m
10:55PM1.60m
11:38AM1.36m
11:41PM1.58m
1:20PM1.35m
Low Tide
1:35AM0.93m
1:55PM0.21m
2:11AM0.89m
2:28PM0.28m
2:51AM0.86m
3:02PM0.38m
3:36AM0.81m
3:39PM0.51m
4:28AM0.75m
4:23PM0.66m
5:30AM0.68m
5:17PM0.83m
6:40AM0.57m
part cloud
part cloud
light rain
light rain
heavy rain
light rain
part cloud
light rain
light rain
light rain
heavy rain
light rain
part cloud
part cloud
thunderstorm
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
4:56
4:56
4:58
4:58
4:58
<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
7:15
 mm
1
3
11
5
1
4
2
11
2
2
4
Temp °C
25
26
25
24
23
24
23
24
24
24
24
25
24
27
27
25
26
26
24
28
28
Feels °C
28
28
28
28
26
28
28
28
28
28
28
29
28
31
31
29
29
28
28
30
31
Swell 1
Height (m)
Direction
Period (s)
0.9
SSW
7
0.5
SW
7
0.4
SW
6
0.4
SSW
5
0.3
SSW
5
0.3
SE
9
0.4
ESE
4
0.5
SSW
6
0.4
SSW
6
0.2
SSW
5
0.5
SE
15
0.8
SE
14
1.1
SE
12
1.8
SE
16
2.2
SE
17
2.5
SE
17
3
SE
17
3
SSE
16
3.5
SSE
17
4
SSE
17
4
SSE
17
Energy kJ
86
22
10
9
4
12
5
22
14
3
106
231
346
1651
2758
3597
5302
4646
6721
7874
9061
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
9
0.4
SE
8
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.2
ESE
9
0.3
ESE
9
0.3
SE
10
0.4
SE
9
0.2
ESE
8
0.4
SE
10
0.4
ESE
9
0.5
SE
19
0.2
SSW
7
1.3
SSE
20
1
SSE
20
0.8
S
22
1
S
23
Energy kJ
19
18
16
16
16
8
15
16
19
7
26
26
173
4
1256
881
611
1029
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
12
0.3
SSE
5
0.3
SSE
5
0.2
ESE
12
0.3
SE
9
0.2
ESE
12
0.2
SSE
9
0.2
ESE
9
0.2
S
7
0.2
SSE
8
0.2
SSW
5
0.1
S
7
0.4
ESE
8
0.2
SSW
7
Energy kJ
15
6
5
14
12
13
8
7
4
7
3
1
20
4
Wind waves
Height (m)
Direction
Period (s)
0.4
NNE
3
0.4
NE
4
0.6
SW
6
0.7
SSE
4
0.2
E
4
0.3
E
4
0.5
SE
4
0.8
ESE
4
0.9
SE
5
0.8
ESE
5
0.6
SE
4
Energy kJ
4
4
24
11
1
3
6
26
32
28
11
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
3
4
4
5
5
6
8
8
9
Distance (km)
0
64
336
1
339
6
293
43
43
352
0
336
14
14
19
19
19
11
11
11
11
Best forecast wave conditions in Shikoku
Rating
(10 max)
1
1
1
1
1
1
1
3
4
4
5
5
6
8
8
9
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
2
3
4
4
7
6
6
8
8
9
Header Global
Rating
(10 max)
5
9
5
9
5
7
5
5
9
7
7
6
9
8
6
6
7
9
7
7
9
  • 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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