Surf Forecasts:
Aoshima surf forecast from 25 Jul 2026:
- Best quality surf: Sunday 26 Jul, 9PM (local time) - 2ft (0.6m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 3AM (local time) - 2ft (0.6m), 10s period, ESE swell with 78 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 9PM (local time) - 2ft (0.6m), 8s period with S 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 Sunday (Jul 26) at 9PM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.4m and 11s. 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 0.6m 10s and forecast to arrive on Tuesday (Jul 28) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Jul 28) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 26th Jul) | 2ft (0.6m) 8s |
| Best Surf | 9PM (Sun 26th Jul) | 2ft (0.6m) 8s |
| Most Powerful | 3AM (Tue 28th Jul) | 2ft (0.6m) 10s |
Table - best surf conditions forecast for Aoshima over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s run through the same outlook for Aoshima, but in the old-school numbers.
The first week is a total dud. From Sunday, July 26th, right through to the morning of Sunday, August 2nd, it’s tiny. The swell is just 1ft to 2ft from the S or ESE, with periods mostly under 11 seconds, and the combined energy is weak, between 31 and 143 – there’s nothing to get excited about. A few mornings are glassy, like Tuesday the 28th and Wednesday the 29th, but the waves are too small to bother with.
Then on Monday, August 3rd, we see a change. The swell bumps up to 2ft – 3ft from the E, with a period of 15-16 seconds, which is a proper groundswell. The combined energy hits 309 and then 575 (moderate). It’s still marginal with onshore winds, but it’s a sign of things to come.
The second week of August is where it gets wild. From Tuesday the 6th through the 9th, the swell is enormous. We’re talking 10ft on the 6th, climbing to 16ft on the 7th, and then on the 8th and 9th it’s a monster – 25ft to 36ft from the ESE and E. The combined energy numbers are huge, hitting 49,889 and 71,872 – that’s very strong energy. The period is 18-19 seconds, so it’s long-period groundswell. For a reef break like Aoshima, it’s going to be a beast. This is strictly for experts; beginners, do not even think about it. The wind is messy on the 8th with a strong cross-shore, but the 9th cleans up with a cross-offshore breeze from the SW. That’s the standout: Sunday, August 9th, with 36ft swell from the E and clean cross-offshore wind. The forecast says it’s ‘too big for this break,’ so only the most experienced and crazy surfers should even look at it.
After that, on Monday, August 10th, the swell drops to 12ft from the S in the morning, with a clean cross-offshore wind. The period drops to 9 seconds, so it’s a bit more manageable, but still strong at 3,753 combined energy. Good for experienced surfers.
Bottom line: the first week is flat. The only real highlight is the 9th of August, with massive, clean swell. The 7th is big but messy. The 10th is a solid option for the experienced crew. Aoshima is a reef break, fairly consistent, and it can get crowded sometimes. The water temperature is 84°, which is a touch warmer than average for this time of year.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Tue night. Warm (max 31°C on Tue afternoon, min 26°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 32°C on Fri afternoon, min 26°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
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) | S 9 | SSE 8 | S 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 11 | ESE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 40 | 54 | 49 | 69 | 67 | 57 | 56 | 55 | 56 | 56 | 56 | 55 | 37 | 35 | 34 | 28 | 28 | 28 | 28 | 47 | 47 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | off | cross-on | cross | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | glassy | cross | cross-off |
High Tide | 5:22PM1.90m | 3:46AM1.93m | 5:58PM2.00m | 4:38AM2.01m | 6:31PM2.08m | 5:24AM2.09m | 7:00PM2.12m | 6:07AM2.14m | 7:28PM2.14m | 6:47AM2.16m | 7:56PM2.14m | 7:28AM2.14m | 8:23PM2.12m | ||||||||
Low Tide | 10:07AM0.35m | 10:33PM1.33m | 10:54AM0.23m | 11:19PM1.24m | 11:35AM0.14m | 11:58PM1.14m | 12:13PM0.10m | 00:33AM1.03m | 12:49PM0.12m | 1:07AM0.93m | 1:23PM0.19m | 1:42AM0.84m | 1:56PM0.30m | 2:17AM0.78m | |||||||
 | |  | |  |  |  |  |  | | | | | | | | | | | | | |
 | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — |
mm | — | — | — | — | 2 | 2 | — | 2 | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 30 | 29 | 29 | 30 | 27 | 30 | 31 | 26 | 31 | 31 | 28 | 31 | 31 | 29 | 31 | 32 | 29 | 30 | 30 | 29 |
Feels °C | 34 | 34 | 34 | 33 | 33 | 30 | 33 | 33 | 27 | 34 | 33 | 33 | 33 | 33 | 32 | 34 | 35 | 32 | 32 | 32 | 34 |
Swell 1 Height (m) Direction Period (s) | S 9 | SSE 8 | S 8 | S 8 | S 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 11 | ESE 11 |
| kJ | 40 | 54 | 49 | 34 | 36 | 57 | 56 | 55 | 56 | 56 | 56 | 55 | 37 | 35 | 34 | 28 | 28 | 28 | 28 | 47 | 47 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 11 | ESE 10 | ESE 10 | S 8 | S 8 | S 8 | S 4 | S 8 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 3 | E 12 | NE 4 | SSW 4 |
| kJ | 39 | 42 | 45 | 69 | 67 | 36 | 21 | 21 | 6 | 10 | 10 | 10 | 4 | 4 | 4 | 1 | 1 | 1 | 3 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | ESE 14 | ESE 14 | ESE 14 | S 3 | S 3 | ESE 13 | S 8 | ESE 13 | SE 13 | — | E 13 | E 15 | E 13 | E 12 | E 12 | SE 13 | — | E 18 | E 18 |
| kJ | 14 | 13 | 21 | 40 | 19 | 1 | 1 | 17 | 11 | 17 | 7 | — | 3 | 4 | 3 | 3 | 3 | 7 | — | 7 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SSW 3 | SW 3 | S 3 | SW 4 | — | S 2 | NNE 3 | — | — | — | — | SSE 2 | — | — | — | — |
| kJ | — | — | — | — | — | 4 | 3 | 4 | 14 | — | 1 | 2 | — | — | — | — | 1 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 334 | 0 | 20 | 117 | 0 | 0 | 312 | 0 | 0 | 19 | 0 | 0 | 312 | 0 | 283 | 312 | 283 | 708 | 781 | 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.
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