Aoshima Surf Break

Lat Long: 31.81° N 131.47° E

Aoshima Surf Forecast and Surf Report

Issued: 8 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Aoshima sea temperature is
27.6°C
0.1° 

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: Monday 21 Sep, 3AM (local time) - 18ft (5.5m), 14s period, ESE swell with onshore winds.
  • Most powerful swell: Monday 21 Sep, 9PM (local time) - 23ft (7.0m), 14s period, E swell with 18,797 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 6AM (local time) - 4.5ft (1.4m), 10s 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 Tuesday (Sep 15) at 6AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.1m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Aoshima in the next 16 days are 7.0m 14s and forecast to arrive on Monday (Sep 21) at 9PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Tue 15th Sep)4.5ft (1.4m) 10s
Best Surf 3AM (Mon 21st Sep)18ft (5.5m) 14s
Most Powerful 9PM (Mon 21st Sep)23ft (7.0m) 14s

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


The Lowdown

G’day, Rusty here. Let’s cut through the chatter and get straight to it. This next stretch is a bit of a mixed bag, with a whole lot of nothing early on, then one giant, gnarly pulse of swell that’ll have the experts licking their lips but everyone else staying well clear. We’ve got a few days of waiting to do, so grab a coffee.

The forecast starts with a tease on Tuesday the 15th. First thing in the morning, there’s a clean 5ft of ESE groundswell at Aoshima. The wind is glassy, and the energy reading is a moderate 401. It’s a reef break, fairly consistent, but the options are limited. It looks surfable, but it’s not exactly a standout. That’s about as good as it gets for a while.

From there, it’s a slow slide into the doldrums. The rest of Tuesday and all of Wednesday and Thursday are junk – the wind swings cross-onshore, the swell drops off, and you’re just chasing whitecaps. The energy values drop into the low to mid hundreds, so there’s no push. You’re better off doing literally anything else. Friday the 18th sees the swell start to build again, but it’s doing so under a howling NE wind, bringing rain. The surf gets to 7.5ft and then 10ft, but it’s an onshore mess. The energy jumps up to a strong 1083, then 2243, but it’s unsurfable. Don’t even think about it.

Then things get interesting. Saturday the 19th rolls in with a big groundswell – 11.5ft early, pushing 13ft in the afternoon. The period is a very long 16 seconds, and the energy reading is a massive 7121. This is serious, powerful water. But the wind is cross-onshore and lumpy, so it’s going to be a battle. The forecast notes it as marginal. This is big, raw power, but it’s not clean.

Sunday the 20th is where it turns properly wild. We’re looking at 16ft of ESE swell with a 15-second period. The wind is a fresh cross-onshore breeze, and the energy is cranking at 9838. This is way beyond anything a normal surfer should be touching. You’d need to be elite and have a death wish.

Monday the 21st is the peak of this whole run. The swell is predicted to hit 20ft to 21ft, with a long 14-second period and energy readings over 20,000. That’s an absolutely colossal amount of water moving. The wind is strong and onshore, but the forecast notes that wind and tide are favorable. However, it also clearly states the swell is predicted to be too big for Aoshima. It’s an expert-only situation, and even then, it's likely closing out completely. This is not a day for the faint of heart. It’s something you watch from the cliffs, not paddle into.

After that monster, the week just gets messy. Tuesday the 22nd drops back down but it’s still a strong, cross-onshore 16ft. It’s all over the place. The rest of the week into the 28th is a tale of poor conditions – moderate to strong cross-onshore winds, lumpy seas, and a swell that’s all over the place. There are windows of smaller swell, but the wind never really cleans up. It’s not until the 28th and 29th that we see another big pulse, but again, it’s sloppy.

So, what’s the call? The only real standout in this entire window is that Monday the 21st event. It’s a true beast, with huge, long-period swell and maximum energy. But it’s not a surfer’s wave, it’s a big-wave charger’s dream. For the average punter, there’s nothing here that’s inviting. The break itself is only fairly consistent, and given the sheer size and onshore winds, this setup looks far more interesting for kite surfing than paddle surfing for most of the period. Save your energy and wait for the ocean to calm down.

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Warm (max 27°C on Sat morning, min 23°C on Fri night). Winds increasing (light winds from the NE on Thu night, fresh winds from the NE by Sun afternoon).

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
1
2
1
0
0
0
0
0
0
0
2
5
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
9
1.5
ESE
10
1.4
ESE
10
1.3
ESE
9
1.1
ESE
9
1
ESE
9
0.9
ESE
9
1.6
ENE
8
1.2
E
8
1.5
E
8
2.3
ENE
8
3
ENE
9
3
E
10
3.5
E
16
4
E
15
4
E
14
5
ESE
15
5
ESE
14
5.5
ESE
15
Wave Graph
Metric surfscale
Energy kJ
212
399
334
266
211
173
113
310
172
265
636
1361
1714
6095
5927
5820
9838
9803
12242
Wind (km/h)
5
SW
5
N
5
ESE
5
NNE
10
NNE
15
NE
25
NNE
20
NNE
15
NE
15
NE
25
NE
25
NE
20
NNE
20
NNE
25
NE
25
NE
35
NNE
35
NE
40
NE
Wind State
off
glassy
cross-on
glassy
cross-on
cross-on
cross-on
cross-on
on
cross-on
on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
High Tide
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
1:49AM0.37m
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
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
part cloud
clear
rain showers
rain showers
part cloud
part cloud
clear
part cloud
part cloud
part cloud
light rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
5
2
6
5
2
1
1
1
1
10
Temp °C
26
26
27
26
25
25
25
25
25
25
25
25
25
27
27
26
26
26
26
Feels °C
30
30
31
30
28
26
25
25
25
26
24
24
26
26
26
25
23
24
24
  • 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 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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