
Surf Forecasts:
Aja surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 9PM (local time) - 1.5ft (0.5m), 10s period, E swell with offshore winds.
- Most powerful swell: Wednesday 19 Aug, 9PM (local time) - 5.5ft (1.7m), 7s period, E swell with 270 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 9PM (local time) - 1.5ft (0.5m), 10s period with E swell.
Best Forecast Surf Conditions for Aja this week:
The surf forecast for Aja over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 9PM. The primary swell is predicted to be 0.5m and 10s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Aja in the next 16 days are 1.7m 7s and forecast to arrive on Wednesday (Aug 19) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Tuesday (Aug 18) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 12th Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 9PM (Wed 12th Aug) | 1.5ft (0.5m) 10s |
| Most Powerful | 9PM (Wed 19th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Aja over the next 16 days.
The Lowdown
Alright, Rusty here again. Gotta be straight with you—the next couple of weeks at Aja is looking pretty slim. We’ve got a real dry spell on our hands, so don’t be expecting any fireworks.
Right now, starting Wednesday the 12th of August, we’ve got tiny 2-foot easterly swell rolling in with an 11-second period, but the conditions are just ordinary. The water temp is sitting at a pretty normal 84°, so nothing unusual there for this time of year. The wave energy is weak, just 83, and we’ve got a light cross-off breeze. It’s surfable, but not worth getting excited about. That sets the tone for the next week and a half.
Thursday the 13th sees that swell drop a little, with a glassy window in the afternoon, 2 feet from the east, period dropping to 10 seconds. That glassy wind is a positive—makes for a clean surface—but the swell is too small to really get going. Saturday the 15th is similar, with glassy conditions again in the morning and afternoon, same tiny 2-foot east swell. It’s a pattern of “almost but not quite.”
By Sunday the 16th, we get a bit of a bump in the wind with a 12 mph offshore breeze in the afternoon, cleaning things up nicely for that 2-foot wave. But here’s the kicker—the swell is just too weak to be a real standout. The energy stays below 100 for basically the whole run.
We hit a real dead zone from the 18th of August all the way through to the 26th. There are several days with zero swell and poor conditions. Wind cranks up, and on the 24th we even see storm force cross-onshore winds of 62 mph—that’s straight-up dangerous, not surfable. Not worth paddling out.
Now, here’s a flicker of hope. Way out on Thursday the 27th of August, the model shows a change. Late in the afternoon, we get a glassy session with 3-foot easterly swell, an 11-second period, and a solid 244 combined energy. That’s moderate energy, finally. That’s the one to circle on your calendar. But it’s a long way off, so treat it as a promising maybe, not a sure thing.
So as it stands, there’s no true standout in this forecast. It’s a long, flat stretch with only a whisper of hope at the very end. Hang tight, check back closer to the 27th.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Wed night. Warm (max 29°C on Thu morning, min 25°C on Wed afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Sat afternoon. Warm (max 29°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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 11 | E 10 | E 10 | E 10 | ENE 10 | E 10 | E 10 | E 9 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 9 | ENE 10 |
Wave Graph | ||||||||||||||||||||
83 | 51 | 73 | 51 | 33 | 31 | 30 | 15 | 61 | 59 | 52 | 51 | 51 | 51 | 71 | 70 | 48 | 48 | 0 | 33 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | glassy | glassy | cross | on | glassy | glassy | glassy | off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 7:34PM2.14m | 7:02AM2.33m | 8:09PM2.18m | 7:47AM2.32m | 8:40PM2.18m | 8:31AM2.25m | 9:10PM2.16m | 9:13AM2.13m | 9:37PM2.12m | 9:54AM1.97m | 10:03PM2.06m | 10:37AM1.81m | 10:29PM1.99m | |||||||
Low Tide | 1:13AM0.89m | 1:43PM0.11m | 1:55AM0.78m | 2:21PM0.18m | 2:35AM0.69m | 2:55PM0.31m | 3:14AM0.64m | 3:26PM0.48m | 3:52AM0.62m | 3:55PM0.66m | 4:31AM0.64m | 4:23PM0.86m | ||||||||
— | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | |
mm | 4 | 5 | — | — | 3 | 3 | 1 | 1 | — | 2 | — | — | — | 3 | 1 | — | — | — | — | 1 |
Temp °C | 26 | 27 | 29 | 29 | 28 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 28 | 28 | 29 | 27 | 28 | 29 | 27 |
Feels °C | 30 | 32 | 33 | 34 | 34 | 31 | 31 | 32 | 34 | 34 | 31 | 32 | 32 | 31 | 30 | 30 | 28 | 29 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | S 8 | S 8 | SW 8 | SW 8 | SW 9 | SW 8 | S 8 | SW 8 | SSW 9 | SSW 8 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | SW 9 | SW 9 | SW 9 | SSW 8 | SSW 9 |
217 | 112 | 112 | 80 | 69 | 77 | 67 | 63 | 46 | 49 | 123 | 132 | 84 | 138 | 99 | 77 | 83 | 83 | 61 | 53 | |
Swell 2 Height (m) Direction Period (s) | E 11 | SW 9 | SW 8 | S 8 | S 9 | S 8 | S 8 | SW 8 | S 8 | S 8 | S 8 | E 10 | S 8 | E 10 | E 10 | E 10 | E 10 | E 10 | S 7 | ENE 10 |
83 | 64 | 66 | 66 | 73 | 65 | 63 | 30 | 43 | 34 | 50 | 51 | 49 | 51 | 71 | 70 | 48 | 48 | 9 | 33 | |
Swell 3 Height (m) Direction Period (s) | ESE 6 | E 10 | E 10 | E 10 | ENE 10 | E 10 | E 10 | E 9 | E 11 | E 11 | E 10 | S 8 | E 10 | S 8 | S 8 | S 7 | S 7 | S 7 | SSE 10 | S 7 |
12 | 51 | 73 | 51 | 33 | 31 | 30 | 15 | 61 | 59 | 52 | 28 | 51 | 19 | 18 | 17 | 10 | 9 | 10 | 16 | |
Wind waves Height (m) Direction Period (s) | E 6 | SE 3 | — | — | — | — | NNW 3 | NW 4 | — | — | — | — | E 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 9 | E 6 |
17 | 1 | — | — | — | — | 1 | 3 | — | — | — | — | 13 | 40 | 51 | 48 | 48 | 36 | 147 | 96 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 14 | 17 | 16 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 14 | 14 | 14 | 14 | 16 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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Information about the Aja Surf forecast
The above surf forecast table for Aja provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Aja can be found by selecting the local surf guide option on the grey menu. Our Aja 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 (Aja) 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 Aja 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.
Aja is 4 km (2 miles) from the city of Tomigusuku. If you plan a holiday in Okinawa, look for hotels and other accommodation in Tomigusuku. Tomigusuku has rooms for a wide range of budgets as well as car hire and transport links.











