Surf Forecasts:
Aoshima surf forecast from 4 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 6PM (local time) - 16ft (5.0m), 17s period, ESE swell with cross-onshore winds.
- Most powerful swell: Thursday 6 Aug, 12PM (local time) - 26ft (8.0m), 16s period, ESE swell with 34,977 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 6PM (local time) - 16ft (5.0m), 17s 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 (Aug 05) at 6PM. The primary swell is predicted to be 5.0m and 17s period. 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 8.0m 16s and forecast to arrive on Thursday (Aug 06) at 12PM. 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+) | 6PM (Wed 5th Aug) | 16ft (5.0m) 17s |
| Best Surf | 6PM (Wed 5th Aug) | 16ft (5.0m) 17s |
| Most Powerful | 12PM (Thu 6th Aug) | 26ft (8.0m) 16s |
Table - best surf conditions forecast for Aoshima over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break it down in the old units.
Aoshima is getting hammered with swell, but the wind is just going to wreck it for the first week. Big waves, sure, but they’ll be choppy and blown out. Not a good time to be out there.
The first real chance to get a clean wave is on Thursday, August 13th. The morning is the pick. A light offshore wind from the west-southwest is grooming a 4ft swell from the east, with a 12-second period. That’s a proper groundswell, so the waves will have good power and shape. The water is a warm 85°, which is pretty normal. The combined energy is moderate (727). For a reef that breaks fairly often, this is a solid option. The onshore wind will kick in later, so be there early.
The rest of the forecast is a long stretch of poor conditions. The wind stays onshore or cross-onshore, and the swell is small and weak. There’s a little bump on Sunday, August 16th, with a 7ft to 8ft swell from the east, but the wind is still a question mark. The energy is a bit stronger (2953), but it’s not a clean bet.
If you’re only going to pick one day, make it Thursday morning, August 13th. That’s the only real clean window in the whole 16 days. After that, you’re just waiting for the next swell.
Rusty.
Short Range ForecastHeavy rain (total 42mm), heaviest during Thu afternoon. Warm (max 29°C on Tue afternoon, min 27°C on Tue night). Winds increasing (light winds from the NE on Tue night, strong winds from the ENE by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 143mm), heaviest during Sun afternoon. Warm (max 28°C on Fri morning, min 27°C on Sun afternoon). Mainly near gales. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | E 17 | ESE 17 | ESE 16 | ESE 16 | ESE 17 | ESE 16 | ESE 17 | SE 16 | ESE 17 | SE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 15 | SSE 16 | SSE 16 | SSE 15 | ESE 11 | SE 11 | SE 10 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3770 | 4757 | 5326 | 8650 | 13022 | 16525 | 23432 | 24498 | 27388 | 10277 | 8333 | 6569 | 4647 | 5256 | 5747 | 4681 | 5199 | 10552 | 8526 | 6015 | 1859 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 4:58PM1.85m | 3:13AM1.86m | 5:33PM1.97m | ||||||||
Low Tide | 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 | 9:33AM0.47m | 10:08PM1.38m | 10:25AM0.34m | 10:56PM1.27m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — |
 | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — |
mm | 4 | 2 | 4 | 2 | 1 | 5 | 6 | 6 | 12 | 8 | 9 | 19 | 12 | 9 | 24 | 11 | 23 | 28 | 11 | 10 | 19 |
Temp °C | 28 | 29 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 |
Feels °C | 30 | 31 | 29 | 28 | 28 | 28 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 25 | 26 | 26 | 25 | 28 |
Swell 1 Height (m) Direction Period (s) | E 17 | ESE 17 | ESE 16 | ESE 16 | ESE 17 | ESE 16 | ESE 17 | SE 16 | SE 16 | SE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 15 | SSE 16 | SSE 16 | SSE 15 | S 15 | S 14 | S 13 | S 12 |
| kJ | 3770 | 4757 | 5326 | 8650 | 13022 | 16525 | 23432 | 24498 | 25463 | 10277 | 8333 | 6569 | 4647 | 5256 | 5747 | 4681 | 4495 | 8539 | 6187 | 4800 | 1412 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | ENE 16 | — | — | — | — | — | — | — | — | — | E 12 |
| kJ | — | — | — | — | — | — | — | — | — | — | 25 | — | — | — | — | — | — | — | — | — | 374 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 389 |
Wind waves Height (m) Direction Period (s) | — | E 8 | — | — | — | — | — | ESE 16 | ESE 17 | E 11 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 11 | SE 11 | SE 10 | ESE 9 |
| kJ | — | 383 | — | — | — | — | — | 23349 | 27388 | 4457 | 4540 | 4232 | 3650 | 2731 | 3008 | 3900 | 5199 | 10552 | 8526 | 6015 | 1859 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 674 | 50 | 288 | 117 | 232 | 361 | 803 | 829 | 791 | 791 | 339 | 672 | 672 | 791 | 829 | 791 | 1234 | 1235 | 1223 | 702 |
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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