
Surf Forecasts:
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 Type | Time (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 ForecastHeavy 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 SummaryHeavy 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 | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | ESE 15 | ESE 16 | ESE 16 | ESE 16 | ESE 17 | E 17 | E 16 | ESE 17 | ESE 17 | ESE 18 | ESE 18 | ESE 18 | ESE 18 | SE 18 | SE 17 | ESE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 |
Wave Graph | ||||||||||||||||||||
284 | 768 | 1038 | 1428 | 2548 | 3770 | 3976 | 6297 | 9976 | 13571 | 20128 | 29314 | 33940 | 44254 | 39734 | 30168 | 15445 | 9995 | 8748 | 7564 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | ||||||||
— | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | |
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 |
Swell 1 Height (m) Direction Period (s) | ESE 15 | ESE 16 | ESE 16 | ESE 16 | ESE 17 | E 17 | E 16 | ESE 17 | ESE 17 | ESE 18 | ESE 18 | ESE 18 | ESE 18 | SE 18 | SE 17 | SSE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 |
284 | 768 | 1038 | 1428 | 2548 | 3770 | 3976 | 6297 | 9976 | 13571 | 20128 | 29314 | 33940 | 44254 | 39734 | 27808 | 15445 | 9995 | 8748 | 7564 | |
Swell 2 Height (m) Direction Period (s) | E 18 | S 8 | SSE 7 | ENE 15 | S 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
158 | 4 | 5 | 42 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | S 8 | SE 10 | SSE 10 | S 7 | S 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 | 15 | 9 | 4 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | NNE 3 | ENE 4 | ENE 6 | ENE 7 | E 8 | E 9 | — | — | — | — | ENE 10 | ESE 18 | ESE 17 | ESE 16 | E 11 | ESE 11 | ESE 11 | ESE 11 |
— | — | 8 | 12 | 97 | 292 | 430 | 575 | — | — | — | — | 4330 | 42127 | 38833 | 30168 | 6687 | 5875 | 5116 | 5073 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 118 | 0 | 49 | 49 | 39 | 49 | 49 | 49 | 288 | 673 | 288 | 202 | 1466 | 202 | 2028 | 791 | 791 | 791 | 791 | 791 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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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.











