Surf Forecasts:
Aoshima Harbour surf forecast from 12 Jul 2026:
- Best quality surf: Monday 13 Jul, 9AM (local time) - 4.5ft (1.3m), 11s period, SSE swell with glassy winds.
- Most powerful swell: Monday 13 Jul, 9AM (local time) - 4.5ft (1.3m), 11s period, SSE swell with 407 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 9AM (local time) - 4.5ft (1.3m), 11s period with SSE 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 Monday (Jul 13) at 9AM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.4m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Aoshima Harbour in the next 16 days are 1.3m 11s and forecast to arrive on Monday (Jul 13) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Monday (Jul 13) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Mon 13th Jul) | 4.5ft (1.3m) 11s |
| Best Surf | 9AM (Mon 13th Jul) | 4.5ft (1.3m) 11s |
| Most Powerful | 9AM (Mon 13th Jul) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Aoshima Harbour over the next 16 days.
Alright, you salty dogs, let’s talk Aoshima Harbour. It’s a beach and jetty setup, open to swell, and it’s got some potential but the next two weeks are a grind for the most part. A couple windows, though, where it’ll be worth wetting a line.
Water temp is 80°F right now, but it’s running about 3°F cooler than average for the season. You’ll feel that slight chill when you first paddle out.
Starting off, Monday (13 July) is your best early bet. Swell is 4ft from the SSE, with an 11-second period – that’s proper groundswell and decent energy (441 combined energy). The morning is dead glassy, with no wind, and the afternoon stays clean with a light cross-off breeze. It’s not huge, but it’s well-shaped for intermediates. Crowds are “sometimes” an issue, so you might have a few buddies out.
Tuesday (14 July) drops to 3ft from the south, period down to 9 seconds. The morning is glassy again, but the energy is weak (139 combined energy). It’s surfable, but just barely. Afternoon gets a cross-on wind that messes it up.
From Wednesday (15 July) through Sunday (19 July), it’s small – mostly 1ft to 3ft – with mixed wind. Some clean offshore mornings, but the energy is low (51 to 140 combined energy). You could catch a few, but don’t drive far for it.
Then things get ugly. From Monday 20 July to Thursday 23 July, the swell pushes up to 4ft, but the wind is cross-on or onshore. Even with higher energy (up to 496 combined energy on Thursday 23rd), the surface is messy. Hard pass.
The back half of the forecast has the real action. Sunday 26 July afternoon shows a 5ft SE swell, 12-second period, and 548 combined energy. The wind is cross-shore, but it’s “marginal” on tide – could be fun if you know the spot.
The standout is Monday 27 July morning. Swell hits 6ft from the SSE, 11-second period, and pumping 775 combined energy. Glassy conditions with barely a breath of wind. It’s the best session of the whole forecast. Intermediates can handle it, but it’s getting sizeable. The afternoon stays at 6ft but picks up a cross-shore breeze, so get it early.
Tuesday 28 July morning is another good one – 5ft SSE swell, glassy, with 644 combined energy. Another dawn patrol winner.
So, the first week is mostly a wash, but Monday 27 and Tuesday 28 July mornings are the real gems. Circle those dates.
Stay salty,
Rusty
Short Range ForecastMostly dry. Warm (max 33°C on Wed morning, min 25°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Warm (max 34°C on Thu afternoon, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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) | SSE 11 | SSE 10 | S 10 | S 9 | S 9 | S 9 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | ESE 9 | E 9 | E 9 | E 10 | E 10 | E 9 | E 9 | E 9 | ESE 10 | ESE 9 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 407 | 324 | 196 | 108 | 169 | 56 | 34 | 33 | 33 | 51 | 29 | 43 | 45 | 47 | 47 | 60 | 60 | 57 | 128 | 110 | 99 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | off | glassy | cross-on | off | off | off | off | off | cross-off | cross-off | glassy | cross-on | glassy | cross-on | on | cross-on | cross-on | on | cross |
High Tide | 6:22PM2.02m | 5:02AM2.04m | 6:56PM2.07m | 5:46AM2.09m | 7:29PM2.10m | 6:28AM2.11m | 7:59PM2.10m | 7:10AM2.09m | 8:29PM2.09m | 7:52AM2.04m | 9:00PM2.05m | 8:37AM1.95m | 9:31PM2.01m | ||||||||
Low Tide | 11:20AM0.12m | 11:41PM1.21m | 12:00PM0.06m | 00:21AM1.14m | 12:38PM0.05m | 00:58AM1.06m | 1:15PM0.09m | 1:34AM0.99m | 1:50PM0.18m | 2:12AM0.92m | 2:26PM0.31m | 2:52AM0.87m | 3:01PM0.49m | ||||||||
 | |  | | | | |  | | | |  | | | | | |  | | | | |
 | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — |
 | — | 7:21 | — | — | 7:21 | — | — | 7:21 | — | — | 7:20 | — | — | 7:20 | — | — | 7:19 | — | — | 7:19 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 30 | 32 | 28 | 31 | 30 | 28 | 33 | 33 | 28 | 33 | 34 | 28 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 26 |
Feels °C | 34 | 36 | 32 | 35 | 33 | 32 | 34 | 33 | 31 | 36 | 36 | 32 | 33 | 33 | 31 | 31 | 31 | 32 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SSE 10 | S 10 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | ESE 10 | ESE 9 | E 9 | E 9 | E 10 | E 10 | E 9 | E 9 | E 9 | ESE 10 | ESE 9 | ESE 9 |
| kJ | 407 | 324 | 196 | 108 | 79 | 56 | 34 | 21 | 33 | 31 | 29 | 43 | 45 | 47 | 47 | 60 | 60 | 57 | 128 | 110 | 99 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | ESE 9 | ESE 9 | E 9 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | SSW 8 | S 7 | S 7 | S 7 | SSE 9 | SSE 8 | SE 9 | SE 9 | SSE 8 | SSE 8 | SSE 9 |
| kJ | 27 | 27 | 27 | 28 | 29 | 15 | 32 | 33 | 33 | 20 | 19 | 10 | 4 | 4 | 8 | 7 | 12 | 19 | 11 | 6 | 7 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 10 | SE 9 | E 9 | ESE 11 | SE 10 | SE 10 | SE 10 | SE 11 | SSW 8 | — | S 11 | SE 10 | S 7 | ESE 9 | SSE 8 | ESE 11 | S 7 | SW 8 | S 7 |
| kJ | 7 | 7 | 16 | 3 | 2 | 13 | 16 | 16 | 16 | 5 | 11 | — | 2 | 4 | 4 | 8 | 6 | 25 | 1 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | — | SSW 4 | SW 4 | — | S 9 | SW 5 | SW 4 | SW 3 | SW 5 | SSW 8 | SW 5 | — | — | — | — | — | S 7 | — | — | — | — |
| kJ | — | 11 | 14 | — | 169 | 17 | 13 | 5 | 39 | 51 | 14 | — | — | — | — | — | 4 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 19 | 49 | 39 | 19 | 706 | 19 |
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.
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