Aoshima Surf Break

Lat Long: 31.81° N 131.47° E

Aoshima Surf Forecast and Surf Report

Issued: 8 am 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Aoshima sea temperature is
27.6°C
0.2° 

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


Aoshima surf forecast from 14 Sep 2026:

  • Best quality surf: Saturday 19 Sep, 12PM (local time) - 13ft (4.0m), 16s period, E swell with cross-onshore winds.
  • Most powerful swell: Sunday 20 Sep, 3PM (local time) - 15ft (4.5m), 15s period, ESE swell with 9,565 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 6PM (local time) - 4ft (1.2m), 8s period with ESE swell.

Best Forecast Surf Conditions for Aoshima this week:

The surf forecast for Aoshima over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 14) at 6PM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.5m and 13s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Aoshima in the next 16 days are 4.5m 15s and forecast to arrive on Sunday (Sep 20) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 7s period and expected on Sunday (Sep 20) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Mon 14th Sep)4ft (1.2m) 8s
Best Surf12PM (Sat 19th Sep)13ft (4.0m) 16s
Most Powerful 3PM (Sun 20th Sep)15ft (4.5m) 15s

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


The Lowdown

Hey folks, Rusty here with a look at the charts. Gotta be honest, the next 16 days are looking like a tough stretch for Aoshima. We’ve got a whole lot of nothing on offer, and the few moments that might have had a pulse get absolutely thrashed by the wind. Let’s just walk through the misery.

The first faint glimmer of a wave shows up on the morning of Monday, September 14th. A small 4ft ESE swell, but the 3 mph NNE breeze puts it straight into the cross-onshore slot, making it a messy, ripply affair. The water temp is 82°F, which is pretty much bang-on average for this time of year – no surprise there. That afternoon and into Tuesday the 15th, it's a total write-off.

Now, Tuesday morning, September 15th... this is the one small glimmer. The swell pushes up to 5ft from the ESE with a period of 10 seconds, and it gets dead glassy with zero wind. That’s the cleanest it’s gonna get all period, and the combined energy is moderate (401). For a moment there, it would have been worth a paddle. But the afternoon ruins it with a cross-shore wind.

From there, it’s a long, slow slide into the gutter. Wednesday the 16th through the end of the first week is all onshore junk. It gets really ugly around Saturday, September 19th, when a massive 13ft+ swell from the ESE rolls in with a 16-second period – that’s very long-period groundswell. The combined energy absolutely skyrockets into the thousands (4516 to 9741), but the wind is a brutal cross-onshore at 15-22 mph. At that size, it’s only for experts anyway, and with that chop, it’s just a washing machine. Honestly, the set-up for the kite crew would be way more interesting than paddling into that mess.

The second week is a total write-off. Monday the 21st has near-gale force winds, and Tuesday the 22nd sees storm-force winds at 56 mph. The swell drops right off after that, going from big and blown out to tiny and onshore. By Wednesday the 23rd, we get a rare bit of clean offshore breeze from the west, but the swell is a pathetic 2ft. After that, through to the end of the period on September 29th, the swell is consistently under 3ft, with cross-onshore winds. A long, dry spell.

So, the bottom line: unless you were out on Tuesday morning, September 15th for that brief glassy window, there is absolutely nothing to recommend. A blank run like this is pretty normal for Aoshima when the wind patterns lock in like this. Keep the board in the bag, mate. Forecasts can change, but right now, it's a tough watch.

Rusty.

Short Range Forecast

Heavy rain (total 23mm), heaviest during Tue afternoon. Warm (max 27°C on Mon morning, min 24°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 47mm), heaviest during Thu night. Warm (max 26°C on Thu afternoon, min 24°C on Thu morning). Wind will be generally light.

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
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
2
2
1
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
ESE
8
1.2
ESE
8
1.2
ESE
9
1.5
ESE
10
1.4
ESE
10
1.3
ESE
9
1.1
ESE
9
1
ESE
9
0.9
ESE
9
1.2
E
9
1.4
E
7
1.2
E
8
1.4
E
8
2.3
E
8
3
E
9
2.5
ESE
16
4
E
16
4
ESE
16
4.5
ESE
16
4.5
ESE
15
4
E
14
Wave Graph
Metric surfscale
Energy kJ
202
194
212
399
327
266
211
173
140
214
189
176
235
754
1357
3256
7401
7919
9400
9565
6766
Wind (km/h)
5
NNE
20
SSE
5
S
0
NNW
5
SSE
5
NNE
10
NE
10
NE
15
NNE
20
NNE
20
ENE
20
ENE
25
ENE
25
ENE
25
NE
25
NNE
25
NE
25
NNE
30
NNE
35
NNE
40
NE
Wind State
cross-on
cross
glassy
glassy
cross
glassy
on
on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
7:29PM2.17m
8:10AM2.10m
7:54PM2.12m
8:53AM1.96m
8:20PM2.06m
9:44AM1.80m
8:48PM1.96m
10:56AM1.65m
9:22PM1.85m
1:02PM1.59m
10:18PM1.71m
3:05PM1.69m
00:29AM1.62m
Low Tide
1:30PM0.64m
1:49AM0.37m
1:59PM0.81m
2:26AM0.39m
2:29PM0.98m
3:06AM0.45m
3:00PM1.17m
3:56AM0.54m
3:38PM1.34m
5:05AM0.65m
4:58PM1.49m
6:44AM0.70m
8:10PM1.48m
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<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:58
5:58
5:58
5:58
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:21
6:20
6:17
6:16
6:15
6:14
 mm
1
3
1
6
6
3
3
1
5
25
10
4
2
5
Temp °C
27
26
25
26
27
26
26
26
25
25
26
25
26
26
25
25
26
25
26
27
26
Feels °C
31
28
29
31
31
30
29
28
26
25
27
26
26
26
24
25
25
24
24
25
24
  • 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 Aoshima Surf forecast

The above surf forecast table for Aoshima provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Aoshima can be found by selecting the local surf guide option on the grey menu. Our Aoshima 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 (Aoshima) 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 Aoshima 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.

Aoshima is 14 km (9 miles) from Miyazaki-shi. If you plan a holiday in Kyu Shu, look for hotels and other accommodation in Miyazaki-shi. Miyazaki-shi has rooms for a wide range of budgets as well as car hire and transport links.

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