Aoshima Harbour Surf Break

Lat Long: 31.80° N 131.47° E

Aoshima Harbour Surf Forecast and Surf Report

Issued: 2 pm 02 Aug 2026 (local time)

Forecast update in  hr  min

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

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


Aoshima Harbour surf forecast from 2 Aug 2026:

  • Best quality surf: Tuesday 4 Aug, 9PM (local time) - 10ft (3.0m), 17s period, E swell with onshore winds.
  • Most powerful swell: Friday 7 Aug, 3AM (local time) - 30ft (9.0m), 18s period, SE swell with 46,508 kJ wave energy.
  • Next surfable swell (1★+): Sunday 2 Aug, 9PM (local time) - 4ft (1.2m), 16s period with ESE swell.

Best Forecast Surf Conditions for Aoshima Harbour this week:

The surf forecast for Aoshima Harbour over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 02) at 9PM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 0.2m and 8s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Aoshima Harbour in the next 16 days are 9.0m 18s and forecast to arrive on Friday (Aug 07) at 3AM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 2nd Aug)4ft (1.2m) 16s
Best Surf 9PM (Tue 4th Aug)10ft (3.0m) 17s
Most Powerful 3AM (Fri 7th Aug)30ft (9.0m) 18s

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


The Lowdown

Alright, Rusty here, takin' a look at the charts for our neck of the woods. Lookin' a bit grim, to be honest. The water's a warm 85°F, a touch above normal for this time of year, but you won't be feelin' it with the wind blowin'.

We're starting off real quiet. Sunday the 2nd and Monday the 3rd are duds. Sunday afternoon at Aoshima Harbour (Aoshima-Harbour) has a weak 3ft swell from the ESE with a cross-shore wind, and the energy is just 443 – nothin' to get excited about. Monday the 3rd brings a bit more size, up to 5ft, but the wind turns cross-onshore and it's lumpy. The wave energy jumps to 1060, but the quality is just not there.

Then things get properly wild. From Tuesday the 4th onwards, we're lookin' at a solid storm sequence. The swell starts pumpin', hittin' 8ft on Tuesday, but the wind is onshore and the conditions are listed as poor. The wave energy climbs into the thousands, but it's all for nothin'. By Wednesday the 5th, we're talkin' 13ft to 16ft swells from the ESE, with the energy over 13,000. This is heavy, powerful stuff, but the wind is a fresh onshore breeze, makin' it a total washin' machine. This is big, unruly, and messy – not a paddle surfer's playground.

The peak of this sour note hits towards the end of the week. Thursday the 6th through Saturday the 8th sees absolutely massive swell, with heights between 15ft and 28ft. The combined energy is off the charts, into the 78,000 range. The notes say the swell is too big for this break, and with strong to near-gale force onshore winds, it's a no-go zone. Honestly, this setup is lookin' far more interestin' for kite surfers than paddle surfers.

The foul weather and heavy swell lingers through the rest of the first week and into the second. From the 9th to the 11th of August, we're still dealin' with strong cross-onshore winds and 10ft to 13ft swells, with the energy stayin' in the 3,000 to 9,000 range. The conditions are consistently poor.

Finally, we see a light at the end of the tunnel. The 12th of August, a Wednesday morning, looks like the first real chance in a while. The wind is light and onshore, and the swell drops to a more manageable 7ft from the east with a 12-second period. The energy is 2261, which is moderate. The wind is light, so it might be a bit bumpy, but at least you won't be gettin' blown off your board. It's a marginal call, but the best we've seen in a while. The 13th, 14th, and 15th stay small, with 4ft to 5ft swells and light winds, but the energy drops back down below 700, and the quality is poor. We finish out the 16th and 17th with buildin' wind and poor conditions again.

So, to sum it up: the first week and a half is a write-off. The only standout, if you can call it that, is Wednesday the 12th of August. It's not perfect, but it's the only window where the swell is down and the wind is light enough to maybe get a few grovelly ones. Don't get your hopes up for anythin' before that.

Rusty.

Short Range Forecast

Heavy rain (total 42mm), heaviest during Mon night. Warm (max 31°C on Sun afternoon, min 27°C on Mon night). Winds increasing (calm on Sun night, fresh winds from the NE by Wed morning).

Days 5-7 Weather Summary

Heavy rain (total 87mm), heaviest during Fri night. Warm (max 28°C on Wed afternoon, min 27°C on Wed night). Winds increasing (moderate winds from the NE on Wed afternoon, near gales from the ENE by Fri afternoon).

Sun
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
2
1
2
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)
0.8
ESE
15
1.2
ESE
16
1.5
ESE
16
1.7
ESE
16
2.2
ESE
17
2.5
E
17
2.5
E
16
3.5
ESE
17
4
ESE
17
5
ESE
18
6
ESE
18
7
ESE
18
7.5
ESE
18
8.5
SE
18
8.5
SE
17
8
ESE
16
5.5
SE
16
4.5
SSE
16
4.5
SSE
16
4
SSE
16
Wave Graph
Metric surfscale
Energy kJ
284
768
1038
1428
2548
3770
3976
6297
9976
13571
20128
29314
33940
44254
39734
30168
15445
9995
8748
7564
Wind (km/h)
15
SE
5
NW
15
NNE
20
NE
15
NE
20
NE
20
ENE
20
NE
30
NE
30
NE
40
NE
45
NE
50
NE
50
ENE
55
ENE
55
ENE
50
E
50
E
50
E
50
E
Wind State
cross
glassy
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
High Tide
8:51PM2.09m
8:53AM1.96m
9:20PM2.04m
9:43AM1.82m
9:51PM1.98m
10:45AM1.67m
10:27PM1.91m
12:18PM1.56m
11:14PM1.84m
2:34PM1.58m
00:24AM1.79m
4:09PM1.71m
1:55AM1.79m
Low Tide
2:55AM0.73m
3:02PM0.65m
3:38AM0.72m
3:36PM0.86m
4:29AM0.72m
4:14PM1.07m
5:33AM0.72m
5:04PM1.28m
6:56AM0.70m
6:41PM1.44m
8:23AM0.61m
8:51PM1.47m
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:30
5:31
5:31
5:31
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:08
7:08
7:07
7:07
7:06
7:05
 mm
1
13
6
7
10
5
2
7
3
6
12
8
12
25
12
13
22
Temp °C
31
30
30
30
28
28
29
28
28
28
28
28
28
28
28
28
28
28
28
28
Feels °C
34
34
33
33
32
30
31
31
28
28
28
25
25
25
25
24
25
25
25
26
  • 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 Harbour Surf forecast

The above surf forecast table for Aoshima Harbour provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Aoshima Harbour can be found by selecting the local surf guide option on the grey menu. Our Aoshima Harbour 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 Harbour) 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 Harbour 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 Harbour is 15 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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