Surf Forecasts:
Aja surf forecast from 31 Aug 2026:
- Best quality surf: Saturday 5 Sep, 9AM (local time) - 3.5ft (1.1m), 10s period, N swell with offshore winds.
- Most powerful swell: Wednesday 2 Sep, 9PM (local time) - 8ft (2.5m), 10s period, E swell with 1,160 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 6PM (local time) - 2ft (0.6m), 9s 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 Friday (Sep 04) at 6PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.7m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Aja in the next 16 days are 2.5m 10s and forecast to arrive on Wednesday (Sep 02) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 9s period and expected on Tuesday (Sep 01) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 4th Sep) | 2ft (0.6m) 9s |
| Best Surf | 9AM (Sat 5th Sep) | 3.5ft (1.1m) 10s |
| Most Powerful | 9PM (Wed 2nd Sep) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Aja over the next 16 days.
The Lowdown
Alright, Rusty here again, but I’ll switch to feet and Fahrenheit for you.
Gotta be honest, the outlook for Aja over the next 16 days is a tough one. This is a reef break that’s inconsistent and really needs a north swell to come alive, but the wind is just not on our side for most of it. There’s a big gap of poor conditions from the start. The first real chance doesn’t come until Saturday, September 5th, and even then it’s a small one.
That Saturday morning, we get a light offshore breeze from the SE, which is a big deal – it’ll keep the waves clean. The swell is a small, long-period groundswell from the north, running about 4ft at 10 seconds. The combined wave energy is moderate (239). The water temp is about average for this time of year. The afternoon holds up the same, with a bit more energy (290) and still that light offshore wind. For a break that’s often quiet, this is the best on offer.
After that, it’s back to the doldrums. Sunday the 6th is a write-off with a moderate breeze and rain. The next period that catches my eye is Thursday, September 10th, but the wind is a fresh cross-onshore, making it lumpy. Not worth it.
The end of the second week, starting Sunday, September 13th, brings some serious size – we’re talking 8ft swell from the NW, but it’s paired with a strong cross-onshore wind at 22-25 mph. The wave energy is very strong (1907), but that wind will make it a messy, blown-out mess. This is for experts only, and honestly, it looks more interesting for kite surfing than paddle surfing.
So, the bottom line: there’s one standout window, and that’s Saturday the 5th. Small, clean, and rideable. The rest of the forecast is a long, frustrating wait. For the experts, the last few days have power, but the wind kills the quality. For everyone else, just keep your wax warm.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Tue night. Warm (max 29°C on Thu afternoon, min 26°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Fri morning. Warm (max 29°C on Fri morning, min 27°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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) | ESE 8 | E 16 | E 16 | E 14 | E 12 | E 12 | E 10 | E 10 | E 10 | E 9 | E 9 | N 7 | N 7 | N 10 | N 10 | N 10 | NNW 8 | N 10 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 5 | 19 | 35 | 27 | 46 | 1060 | 759 | 443 | 142 | 85 | 51 | 52 | 239 | 290 | 202 | 70 | 46 | 104 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross | cross | cross | cross-off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:24AM2.04m | 9:29PM2.12m | 10:10AM1.91m | 10:00PM2.06m | 11:07AM1.76m | 10:39PM1.98m | 12:25PM1.62m | 11:32PM1.88m | 2:30PM1.59m | 1:04AM1.81m | 4:19PM1.70m | 2:57AM1.84m | |||||||
Low Tide | 3:19AM0.46m | 3:23PM0.65m | 3:59AM0.47m | 3:56PM0.84m | 4:47AM0.52m | 4:34PM1.04m | 5:48AM0.59m | 5:25PM1.24m | 7:12AM0.66m | 7:04PM1.38m | 8:52AM0.63m | 9:24PM1.37m | |||||||
 |  | | | |  |  |  | | | | |  | | | | |  |  | |
 | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:51 | — | 6:50 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — |
mm | 2 | 2 | 2 | 5 | 1 | — | — | — | 1 | — | 9 | — | 1 | 1 | — | 8 | 8 | 9 | 7 |
Temp °C | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 28 | 28 | 27 | 26 |
Feels °C | 28 | 28 | 29 | 27 | 29 | 28 | 28 | 30 | 31 | 31 | 32 | 32 | 31 | 33 | 33 | 32 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 10 | SW 9 | SW 10 | SSW 10 | ESE 9 | E 10 | E 10 | E 10 | SSW 10 | SW 10 | S 10 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | N 10 | SSW 8 |
| kJ | 35 | 33 | 41 | 79 | 178 | 422 | 1060 | 759 | 443 | 167 | 226 | 186 | 393 | 257 | 216 | 171 | 202 | 46 | 183 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SSW 8 | S 8 | E 12 | SSW 10 | SSW 10 | SSW 11 | SSW 12 | SW 11 | S 9 | SW 10 | N 7 | N 10 | N 10 | N 10 | NNW 8 | E 9 | E 10 |
| kJ | 21 | 20 | 21 | 5 | 27 | 272 | 267 | 305 | 353 | 202 | 153 | 160 | 51 | 239 | 290 | 202 | 70 | 39 | 104 |
Swell 3 Height (m) Direction Period (s) | S 8 | E 16 | E 16 | E 14 | — | E 12 | — | S 9 | N 6 | E 9 | E 9 | N 7 | E 8 | ESE 8 | ESE 7 | E 10 | E 9 | NW 7 | N 8 |
| kJ | 6 | 5 | 19 | 35 | — | 46 | — | 39 | 29 | 142 | 85 | 51 | 52 | 20 | 18 | 28 | 42 | 16 | 35 |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | — | — | N 6 | W 3 | — | — | SW 3 | — | — | — | — | SSW 8 | SSW 8 | — |
| kJ | 621 | 761 | 796 | 1039 | 542 | — | — | 33 | 5 | — | — | 3 | — | — | — | — | 344 | 251 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 607 | 673 | 598 | 590 | 14 | 16 | 16 | 17 | 10 | 10 | 10 | 39 | 0 | 0 | 0 | 14 | 14 | 15 | 14 |
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.
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