Aoshima Surf Break

Lat Long: 31.81° N 131.47° E

Aoshima Surf Forecast and Surf Report

Issued: 8 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Aoshima sea temperature is
29.4° C
0.9° 

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


Aoshima surf forecast from 5 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 9AM (local time) - 21ft (6.5m), 15s period, ESE swell with cross-onshore winds.
  • Most powerful swell: Thursday 6 Aug, 6PM (local time) - 21ft (6.5m), 16s period, ESE swell with 21,568 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 9AM (local time) - 21ft (6.5m), 15s 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 Thursday (Aug 06) at 9AM. The primary swell is predicted to be 6.5m and 15s period with a secondary swell of 5.5m and 15s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Aoshima in the next 16 days are 6.5m 16s and forecast to arrive on Thursday (Aug 06) at 6PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 6th Aug)21ft (6.5m) 15s
Best Surf 9AM (Thu 6th Aug)21ft (6.5m) 15s
Most Powerful 6PM (Thu 6th Aug)21ft (6.5m) 16s

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


The Lowdown

Alright, folks, Rusty here. Let’s have a look at what’s cooking for Aoshima over the next couple of weeks. I gotta be straight with you – it’s a rough start. We’ve got a solid window of time where the ocean is just not cooperating. The first recommendation for a surf doesn't even roll around until the 14th of August, so we’re looking at a dry spell of over a week before anything worth paddling out for shows up.

Aoshima is a reef setup, and it’s fairly consistent, but the winds early on are just ugly. The water temp is sitting at 85°, which is about normal for this time of year, no shock there. But from the start of the month through to the 13th, we’re stuck with a run of poor conditions. A massive swell comes through on the 6th and 7th of August – we’re talking 21ft and 20ft of swell from the ESE with a very long period of 15 to 17 seconds (combined energy readings of 29,626 and 35,289). That’s a *lot* of water, but it’s a mix of strong onshore and cross-onshore winds, and the wave comment is clear: too big for this break. That’s expert-only territory, and even then, the wind is gonna make it a sloppy mess. The rest of that first week is just one poor surf condition after another with fresh to strong breezes messing up the face.

Things start to settle down a little around the 12th and 13th, but it’s only marginal. The swell drops to 5ft and then 3ft, period hangs around 11 seconds, but it's still cross-onshore. Not worth getting wet for.

Now, here’s a tiny glimmer. On the morning of the 14th of August, we get a moment of pure glass. The wind goes glassy from the NNE, and the swell is a tiny 2ft from the south with a period of 9 seconds. The wave comment says “surfable waves but very ordinary conditions.” For a reef break, that’s a long-period groundswell, but it’s small. It’s the only time in the first two weeks where the wind is truly clean. The 15th of August morning also has a glassy moment with a 2ft swell from the east, but it's the same story – small and ordinary. If you’re desperate for a longboard or a funboard, those two mornings are your best bet, but don’t expect anything firing.

The 17th sees a bit of a bump in size, with 6ft on the Monday afternoon, but the wind is onshore and fresh, so it’s poor again. The 18th and 19th bring more swell, up to 7ft and then 12ft, and even a lovely 14-second period on the 19th, but the wind is cross-on and strong. The 20th of August finally shows a shift to a cross-shore breeze from the SE, with a 8ft swell from the east at 12 seconds (combined energy of 1,754). That’s a moderate energy, and the conditions are described as “marginal.” It’s not great, but it’s the best of the lot in the second week. The direction is east, and Aoshima’s optimum swell direction is SE, so it’s a bit off, but at least the wind is finally cross-shore.

Honestly, the standout? There isn’t a true one. The 14th morning’s glassy conditions are the only clean window, but it’s tiny. If you’re a beginner, the swell on the 14th and 15th is small enough (2ft), but when it does get bigger later in the window, it’s either too big or the wind is trash. The 20th has the best combo of size and wind, but it’s still marginal. Keep an eye on the forecasts, because this run of poor surf can’t last forever.

Rusty.

Short Range Forecast

Heavy rain (total 63mm), heaviest during Fri night. Warm (max 28°C on Wed morning, min 27°C on Wed morning). Mainly strong winds.

Days 4-6 Weather Summary

Heavy rain (total 126mm), heaviest during Sat afternoon. Warm (max 28°C on Sat morning, min 26°C on Sat afternoon). Mainly strong winds.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
AM
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
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)
4
ESE
16
4.5
ESE
17
5
ESE
16
6.5
ESE
15
6.5
ESE
15
6
SE
16
6
SSE
15
4
SE
14
3.5
SSE
14
3
SSE
13
4
ESE
10
3.5
ESE
9
3
ESE
9
3
ESE
9
3.5
ESE
9
3
ESE
8
3
ESE
8
3
ESE
8
2.3
SE
8
1.1
E
12
1.6
E
12
Wave Graph
Metric surfscale
Energy kJ
8650
11595
12393
17356
20372
18486
15796
6770
4080
2679
2810
1819
1496
1481
1640
1388
1141
1056
653
359
702
Wind (km/h)
30
NE
30
NE
35
NE
45
NE
45
ENE
45
ENE
45
ENE
45
E
40
E
35
E
35
E
35
E
35
E
45
E
40
ESE
40
ESE
40
ESE
35
ESE
30
ESE
25
ESE
15
ESE
Wind State
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
10:45AM1.67m
10:27PM1.91m
12:18PM1.56m
11:14PM1.84m
2:34PM1.58m
00:24AM1.79m
4:09PM1.71m
1:55AM1.79m
4:58PM1.85m
3:13AM1.86m
5:33PM1.97m
4:12AM1.96m
6:03PM2.06m
Low Tide
4:14PM1.07m
5:33AM0.72m
5:04PM1.28m
6:56AM0.70m
6:41PM1.44m
8:23AM0.61m
8:51PM1.47m
9:33AM0.47m
10:08PM1.38m
10:25AM0.34m
10:56PM1.27m
11:09AM0.24m
11:33PM1.13m
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mod rain
thunderstorm
thunderstorm
mod rain
thunderstorm
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<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:33
5:33
5:33
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:06
7:05
7:04
7:02
7:01
 mm
3
2
5
6
7
11
6
5
18
8
16
21
10
9
26
13
10
13
4
5
14
Temp °C
28
28
27
28
28
28
28
28
28
28
27
27
27
27
27
27
27
27
28
28
27
Feels °C
28
28
27
26
26
26
26
26
27
28
27
27
26
25
25
25
26
26
29
30
29
  • 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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