Asakawa Surf Break

Lat Long: 33.63° N 134.38° E

Asakawa Surf Forecast and Surf Report

Issued: 2 pm 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Asakawa sea temperature is
27.6° C
0.7° 

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


Asakawa surf forecast from 18 Jul 2026:

  • Best quality surf: Monday 20 Jul, 9AM (local time) - 1.5ft (0.5m), 9s period, SE swell with glassy winds.
  • Most powerful swell: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 94 kJ wave energy.
  • Next surfable swell (1★+): Monday 20 Jul, 9AM (local time) - 1.5ft (0.5m), 9s period with SE 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 Monday (Jul 20) at 9AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.2m and 9s. Another secondary swell of 0.4m and 8s 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) 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 3s period and expected on Friday (Jul 24) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Mon 20th Jul)1.5ft (0.5m) 9s
Best Surf 9AM (Mon 20th Jul)1.5ft (0.5m) 9s
Most Powerful 3AM (Sat 25th Jul)1.5ft (0.4m) 16s

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


The Lowdown

G’day, Rusty here. Look, I’ll be straight with you – the next week or so is a tough slog for Asakawa. This point break is inconsistent as it is, and for the first few days, we’re looking at tiny, weak swell with nothing to get excited about. The water temp is sitting at 82°, which is pretty much average for this time of year, so no surprises there.

We’ve got a real dry spell from now until Saturday the 26th of July. The surf is mostly knee-high or smaller, and the energy in the water is pathetic – we’re talking combined swell energy in the low 30s to 40s (31 to 42), which is barely a ripple. Winds are mostly light, with some glassy mornings on Monday the 20th, Tuesday the 21st, and Wednesday the 22nd, but even then, the swell is just 0.7ft to 1.0ft from the ESE. Not worth paddling out for.

There’s a slight uptick on Saturday the 25th and Sunday the 26th, with a 1ft SE swell and a period stretching to 15–16 seconds. That’s a long-period groundswell, and combined energy climbs to around 139 to 152 (moderate), but the wave comment says it all – “surfable waves but very ordinary conditions.” It’s still too small for a proper session.

Now, things get interesting from Monday the 27th of July. The swell jumps to 7ft from the SSE with a 15-second period, and combined energy rockets to 1768 (strong). The wind is cross-shore from the ENE at 6 mph, so it’s a bit crinkly. This is more of a moderate-to-intermediate size, but the rating says it’s marginal due to tide. By Tuesday the 28th, we’re looking at 12ft to 13ft from the SSE with a 14 to 17-second period. That’s a big, powerful groundswell, and the energy is massive – 4658 to 10256 (very strong). The wind is cross-offshore from the NE to NNE at 12 to 16 mph, keeping it clean. This is expert territory, though – over 8ft, so only for those with serious skills. The best session on offer is Tuesday afternoon, where the combination of big swell, clean conditions, and a solid 17-second period matches the optimum SE direction nicely. It’s a standout, but with “sometimes” crowds, expect a few locals out.

Wednesday the 29th of July is a full-on caution. The morning shows 25ft from the SE with a 16-second period, and a gale-force 40 mph onshore wind from the SSE. Combined energy hits 30144 (extreme) – that’s way too big and messy for Asakawa. It’s a “too big for this break” situation. The afternoon drops to 7ft but with strong cross-onshore winds, so it’s poor.

Thursday the 30th and Friday the 31st settle down, with 7ft to 8ft swell from the S and SW, but the wind is cross-onshore and choppy. Not great. By Friday morning, we get a clean 4ft from the S with cross-offshore NNE winds at 9 mph, and the energy is 274 (moderate). It’s a “good surf conditions” tag, but it’s small and fading.

Into the first week of August, it’s back to 2ft to 3ft, clean but weak. The energy is between 129 and 289 (weak to moderate). Nothing to write home about.

So, the real standout is Tuesday the 28th of July – that 13ft, 17-second SSE groundswell with clean cross-offshore winds is the pick of the lot. It’s big, powerful, and for experts only. Keep an eye on it, but don’t get your hopes up for the rest of the window.

Stay frothy,
Rusty

Short Range Forecast

Light rain (total 6mm), mostly falling on Sat afternoon. Warm (max 31°C on Mon morning, min 26°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Tue afternoon. Warm (max 32°C on Thu morning, min 27°C on Tue night). Wind will be generally light.

Sat
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
E
9
0.4
SE
8
0.3
ESE
9
0.3
ESE
10
0.4
SE
9
0.5
SE
9
0.2
ESE
11
0.3
ESE
7
0.2
ESE
11
0.3
ESE
11
0.3
ESE
11
0.3
ESE
11
0.3
ESE
10
0.2
ESE
11
0.3
SE
9
0.4
SE
10
0.3
SE
18
0.3
SE
18
0.3
SE
18
0.3
SE
16
Wave Graph
Metric surfscale
Energy kJ
13
24
17
18
20
39
12
9
11
23
22
22
22
11
14
25
50
49
49
42
Wind (km/h)
10
SSE
10
S
5
SSE
15
S
5
WSW
5
S
10
S
5
W
5
ESE
10
SSW
5
W
5
E
5
S
5
NW
0
SE
5
S
5
NW
5
SE
10
SSE
5
SSW
Wind State
on
on
on
on
cross
glassy
cross-on
cross-off
glassy
cross-on
cross-off
glassy
cross-on
glassy
glassy
on
glassy
cross-on
on
glassy
High Tide
9:08PM1.72m
8:52AM1.63m
9:39PM1.67m
9:44AM1.49m
10:10PM1.62m
10:46AM1.35m
10:42PM1.56m
12:10PM1.25m
11:21PM1.50m
2:11PM1.24m
00:16AM1.45m
3:54PM1.32m
1:31AM1.43m
Low Tide
3:02AM0.69m
3:11PM0.45m
3:49AM0.67m
3:45PM0.65m
4:40AM0.66m
4:20PM0.84m
5:41AM0.66m
5:01PM1.01m
6:53AM0.64m
6:12PM1.14m
8:11AM0.59m
8:12PM1.20m
thunderstorm
thunderstorm
clear
clear
part cloud
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
rain showers
thunderstorm
clear
clear
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:05
5:05
5:05
5:07
5:07
5:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:12
7:12
7:10
7:09
7:09
7:08
7:08
 mm
2
2
2
2
1
1
2
1
1
5
7
Temp °C
29
27
30
30
27
31
30
28
30
31
28
30
31
28
32
31
28
30
29
27
Feels °C
33
32
33
33
32
35
34
34
36
36
33
35
36
33
36
36
33
35
34
33
  • Map Icons:
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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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