Surf Forecasts:
Aoshima surf forecast from 7 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 6AM (local time) - 4.5ft (1.3m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 9PM (local time) - 6ft (1.9m), 8s period, E swell with 476 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 6AM (local time) - 4.5ft (1.3m), 8s 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 6AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.6m 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 1.9m 8s and forecast to arrive on Monday (Sep 07) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 9th Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 6AM (Wed 9th Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 9PM (Mon 7th Sep) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Aoshima over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down the next 16 days for Aoshima. Truth is, it’s mostly a rough patch, but there are a couple of specific moments that’ll get your heart pumping.
The water temp is 84°, which is just about normal for this time of year. Nothing unusual.
The first chance to get a decent session is on Wednesday morning, September 9th. We’ve got a 4ft swell coming from the ESE with a period of 8 seconds, and the wind is glassy. That’s a huge plus. The combined energy is moderate (236), so it’s not a bomb, but it’ll be clean. Crowds are possible at Aoshima, but with that glassy morning, it’s your best bet for a long time.
After that, it’s a desert. From Tuesday the 10th all the way through the 16th, it’s nothing but cross-onshore winds, chop, and poor quality. Swell hangs around 2ft to 5ft, but the wind is a constant problem. There’s a long gap of no good options here.
The big one is way out there. Circle Tuesday, September 22nd. The morning shows a 8ft swell from the ESE with a very long period of 18 seconds. That’s serious groundswell, and the combined energy is massive (7973). The wind is a light cross-onshore, so it’s not perfect, but it’s workable. The afternoon pushes to 10ft with the same 18-second period, and the energy is insane (10628). Aoshima is a reef, so that long period should wrap in nicely. The morning is your best shot. Given the size – over 8ft – this is for experts only. It’s a long-range call, so it’s promising but not a guarantee.
The days before that, like the 20th and 21st, have 10ft to 13ft waves, but the cross-onshore wind makes them a lumpy, choppy mess. That’s more for kite surfers.
So, the only two real standouts are that glassy morning on the 9th and the big, long-period groundswell on the 22nd. Everything else? Just wait it out.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Tue night. Warm (max 28°C on Wed afternoon, min 24°C on Wed night). Winds decreasing (fresh winds from the NE on Mon afternoon, calm by Tue night). | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Fri afternoon. Warm (max 28°C on Fri afternoon, min 24°C on Thu afternoon). Wind will be generally light. | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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) | E 9 | ENE 8 | ENE 7 | ENE 7 | ESE 8 | ESE 8 | SE 8 | NE 6 | SE 8 | E 7 | ENE 6 | SE 7 | SE 7 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | ESE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 537 | 250 | 278 | 229 | 224 | 202 | 140 | 134 | 82 | 199 | 140 | 73 | 91 | 96 | 99 | 95 | 134 | 184 | 125 | 172 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | on | on | cross-on | on | cross-on |
High Tide | 4:33PM1.87m | 3:10AM1.79m | 5:01PM1.98m | 4:09AM1.94m | 5:28PM2.07m | 4:56AM2.07m | 5:52PM2.13m | 5:37AM2.18m | 6:17PM2.17m | 6:16AM2.24m | 6:41PM2.19m | 6:53AM2.24m | 7:04PM2.19m | |||||||
Low Tide | 10:03PM1.30m | 10:06AM0.45m | 10:41PM1.12m | 10:48AM0.37m | 11:13PM0.94m | 11:25AM0.33m | 11:44PM0.77m | 11:59AM0.34m | 00:14AM0.61m | 12:30PM0.40m | 00:44AM0.49m | 1:01PM0.50m | 1:16AM0.41m | |||||||
 |  |  | |  |  |  | |  | | | | |  |  | |  | | | | |
 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — |
 | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:22 | — |
mm | — | — | — | — | 3 | 1 | 2 | — | 1 | 1 | 2 | 1 | 4 | 4 | — | — | — | 2 | — | 3 |
Temp °C | 27 | 26 | 27 | 27 | 27 | 27 | 28 | 26 | 24 | 24 | 24 | 26 | 28 | 26 | 27 | 27 | 27 | 27 | 27 | 26 |
Feels °C | 26 | 25 | 27 | 27 | 28 | 31 | 32 | 27 | 24 | 25 | 25 | 30 | 33 | 31 | 31 | 31 | 32 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 10 | SE 8 | SSE 9 | SE 8 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 8 | E 7 | E 7 | SE 7 | SE 7 | SE 7 | SE 7 | SSE 7 | E 14 | E 14 | SE 6 | ESE 9 |
| kJ | 78 | 95 | 154 | 205 | 224 | 202 | 140 | 82 | 82 | 199 | 107 | 73 | 91 | 55 | 49 | 42 | 134 | 184 | 54 | 172 |
Swell 2 Height (m) Direction Period (s) | S 10 | SSE 9 | ESE 11 | ESE 10 | NE 6 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | SE 7 | ENE 6 | E 15 | E 14 | E 14 | E 14 | SSE 7 | SE 6 | E 13 | S 9 |
| kJ | 55 | 69 | 22 | 33 | 56 | 34 | 33 | 51 | 29 | 34 | 77 | 18 | 74 | 96 | 99 | 95 | 30 | 32 | 125 | 63 |
Swell 3 Height (m) Direction Period (s) | — | ESE 11 | — | — | ESE 10 | NE 6 | NE 5 | E 17 | E 16 | E 16 | ESE 9 | ESE 9 | S 7 | ESE 10 | NE 4 | ESE 10 | ESE 10 | SSE 11 | ESE 9 | E 13 |
| kJ | — | 12 | — | — | 77 | 9 | 7 | 24 | 21 | 21 | 33 | 32 | 4 | 18 | 4 | 31 | 31 | 39 | 46 | 123 |
Wind waves Height (m) Direction Period (s) | E 9 | ENE 8 | ENE 7 | ENE 7 | NE 6 | — | — | NE 6 | NE 6 | ENE 6 | ENE 6 | NE 6 | ENE 5 | NE 4 | NE 4 | — | ENE 5 | E 5 | ESE 6 | — |
| kJ | 537 | 250 | 278 | 229 | 170 | — | — | 134 | 80 | 184 | 140 | 36 | 9 | 8 | 12 | — | 3 | 1 | 40 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 50 | 50 | 48 | 50 | 38 | 0 | 60 | 50 | 38 | 38 | 38 | 20 | 38 | 2 | 20 | 50 | 38 | 48 | 50 | 38 |
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.
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