Surf Forecasts:
Aoshima surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 12AM (local time) - 15ft (4.5m), 11s period, ESE swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 12AM (local time) - 15ft (4.5m), 11s period, ESE swell with 5,507 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 12AM (local time) - 15ft (4.5m), 11s 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 Wednesday (Sep 09) at 12AM. The primary swell is predicted to be 4.5m and 11s period. 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 11s and forecast to arrive on Wednesday (Sep 09) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 9th Sep) | 15ft (4.5m) 11s |
| Best Surf | 12AM (Wed 9th Sep) | 15ft (4.5m) 11s |
| Most Powerful | 12AM (Wed 9th Sep) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Aoshima over the next 16 days.
The Lowdown
Alright, let’s get into it. It’s a bit of a rough stretch out there for Aoshima. We’ve got a solid window coming up, but the ocean is going to be angry and messy for most of it. Don’t go getting your hopes up for the next few days, because it’s not looking pretty.
The next week and a half is basically a write-off for decent waves. We’ve got a pulse of swell arriving, but it’s all tangled up with strong cross-onshore winds, and the sea surface is going to be chopped up and lumpy. It’s one of those times where it’s going to be a battle just to get out the back, and the ride won’t be worth the paddle. We’re looking at swell heights around 5ft to 12ft, but the wind is just ruining everything. On the 4th, we see 10ft of short-period SSE swell, but it’s crossed up and messy. The 8th is another big one, with 10ft to 12ft of ESE swell, but again, it’s all over the place. The combined energy is moderate to strong, hitting 2029 and 3317 on those days, but it’s all wasted energy. If it’s a kite day you’re after, this might be more interesting than surfing, because paddle surfing is going to be a grind.
There’s a slight tease on the 9th. The swell drops a bit, and we get a bigger, longer-period groundswell from the ESE. It’s hitting 13ft with an 11-second period, and the energy jumps up to 4281. But the wind is still cross-shore, and it’s just not clean enough to call it good. It’s still poor, just less bad than the days before.
Then it all backs off. From the 11th through the 14th, the swell just fades away, leaving us with small, weak, and mostly wind-affected waves. You’ll see 3ft to 6ft, but the period is short and the energy is weak, under 615. It’s pretty much flat and messy, not worth the time.
Now, the one glimmer in all this. On the 16th, there’s a big, powerful swell on the horizon. It’s still a week and a half away, so it’s a long-range call, but the models are showing a serious pulse. We’re looking at 13ft of ESE groundswell with a 13-second period, and the combined energy is a massive 5296. That’s strong to very strong energy. But here’s the catch – the wind is forecast to be howling from the NE at 25 mph, making it a strong cross-onshore mess. It’s going to be big, but it’s going to be a washing machine. This is one for the experts only, and even then, it’s going to be challenging. It’s a standout for size and power, but not for quality. It could be a spectacular, heavy day if the wind plays ball, but right now, it’s a wildcard.
So, the honest truth is there’s nothing in the next 16 days that I’d be rushing out for. The 16th has the most potential, but it’s a promise of power, not perfection. Keep an eye on it, but don’t book the day off work yet.
Rusty.
Short Range ForecastHeavy rain (total 354mm), heaviest during Fri afternoon. Warm (max 29°C on Wed morning, min 24°C on Wed night). Winds increasing (light winds from the NE on Wed morning, near gales from the NE by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 41mm), heaviest during Sun night. Warm (max 27°C on Sat afternoon, min 24°C on Sat morning). Mainly strong winds. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
AM | 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) | SE 9 | SE 9 | SE 8 | ESE 10 | SE 10 | SE 10 | SSE 9 | SSE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | E 8 | E 8 | ESE 10 | ESE 10 | ESE 11 |
Wave Graph | |||||||||||||||||||||
396 | 314 | 239 | 565 | 1100 | 1460 | 1050 | 1033 | 1589 | 1238 | 844 | 541 | 226 | 268 | 757 | 645 | 316 | 235 | 1885 | 2159 | 5507 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 9:23AM1.88m | 8:57PM2.02m | 10:22AM1.71m | 9:28PM1.93m | 11:55AM1.58m | 10:09PM1.81m | 2:33PM1.61m | 11:29PM1.70m | 3:55PM1.74m | 1:41AM1.69m | 4:33PM1.87m | 3:10AM1.79m | 5:01PM1.98m | ||||||||
Low Tide | 2:59PM1.00m | 3:46AM0.57m | 3:31PM1.20m | 4:45AM0.65m | 4:16PM1.39m | 6:11AM0.70m | 6:22PM1.53m | 7:54AM0.67m | 9:04PM1.46m | 9:12AM0.56m | 10:03PM1.30m | 10:06AM0.45m | 10:41PM1.12m | ||||||||
5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | |
— | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:30 | — | — | 6:30 | — | |
mm | 1 | — | 9 | 3 | 30 | 69 | 105 | 119 | 18 | 2 | — | 3 | 2 | 8 | 15 | 2 | 2 | 7 | 4 | 1 | 1 |
Temp °C | 29 | 29 | 28 | 24 | 26 | 27 | 27 | 27 | 25 | 26 | 27 | 27 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 28 | 26 |
Feels °C | 32 | 31 | 31 | 23 | 28 | 28 | 28 | 29 | 22 | 25 | 26 | 26 | 23 | 25 | 25 | 25 | 24 | 25 | 25 | 27 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 8 | ESE 10 | SE 10 | SE 10 | SE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | S 8 | ENE 9 | S 8 | E 8 | ESE 11 | — | — |
396 | 314 | 239 | 565 | 1100 | 1199 | 926 | 848 | 314 | 128 | 84 | 53 | 49 | 33 | 49 | 516 | 21 | 235 | 1432 | — | — | |
Swell 2 Height (m) Direction Period (s) | E 12 | E 11 | E 11 | E 11 | E 10 | — | NE 6 | E 10 | E 15 | E 15 | SSW 10 | E 13 | S 8 | S 8 | SE 8 | S 8 | S 8 | S 8 | — | — | — |
134 | 154 | 114 | 110 | 31 | — | 18 | 31 | 4 | 4 | 10 | 4 | 12 | 21 | 15 | 33 | 34 | 19 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SW 10 | E 18 | ENE 6 | SW 10 | E 13 | E 16 | E 11 | ENE 6 | E 15 | — | E 14 | SSW 8 | E 13 | SE 8 | SE 8 | — | ESE 11 | ESE 11 | — | — | — |
4 | 6 | 4 | 4 | 13 | 5 | 35 | 14 | 4 | — | 4 | 14 | 3 | 3 | 23 | — | 12 | 12 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | ENE 6 | — | ENE 10 | NE 5 | SE 10 | SSE 9 | SSE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | E 8 | ENE 8 | ESE 10 | ESE 10 | ESE 11 |
— | 4 | — | 483 | 68 | 1460 | 1050 | 1033 | 1589 | 1238 | 844 | 541 | 226 | 268 | 757 | 645 | 316 | 117 | 1885 | 2159 | 5507 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 359 | 48 | 60 | 283 | 283 | 283 | 283 | 283 | 117 | 283 | 49 | 75 | 50 | 283 | 283 | 283 | 733 | 68 | 50 | 0 |
Best forecast wave conditions in Kyu Shu | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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.











