
Surf Forecasts:
Aja surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 9AM (local time) - 3ft (0.9m), 9s period, E swell with offshore winds.
- Most powerful swell: Thursday 10 Sep, 3PM (local time) - 3.5ft (1.1m), 9s period, N swell with 198 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 9PM (local time) - 3.5ft (1.1m), 9s period with N 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 Thursday (Sep 10) at 9PM. The primary swell is predicted to be 1.1m and 9s period. 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 1.1m 9s and forecast to arrive on Thursday (Sep 10) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 10s period and expected on Wednesday (Sep 16) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 10th Sep) | 3.5ft (1.1m) 9s |
| Best Surf | 9AM (Wed 16th Sep) | 3ft (0.9m) 9s |
| Most Powerful | 3PM (Thu 10th Sep) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Aja over the next 16 days.
The Lowdown
Alright, let’s get into it.
The next week and a half is going to be a real test of patience, folks. We’ve got a solid stretch of small, weak surf and less-than-ideal conditions, but there’s a little window of promise mid-next week that’s worth keeping an eye on.
For the next few days, don’t get your hopes up. Thursday morning is seeing a tiny 1.1m of north swell at Aja, but it’s got a cross-onshore wind making it choppy, and the energy is weak at 180. Honestly, not worth the paddle out. That afternoon is more of the same. Friday morning we see a drop in size to 0.8m, but the wind turns offshore from the ESE, which is a plus. It’s clean, but the swell energy is weak (92) and the period is a short 8 seconds. It’s surfable, but very ordinary.
We’ve got a real dry spell from Friday afternoon through to Tuesday. Waves are tiny, around 0.4m, and the wind stays cross-offshore. Even when the period stretches out to 14 seconds, there’s just no energy in the water. The energy readings are very low, well under 100. This is a stretch of several days where you’re better off doing anything else.
Now, here’s the one to watch. The morning of Wednesday, the 16th, things start to wake up. We’ve got 0.9m of east swell, but the energy jumps to 213, which is moderate. The period is a workable 9 seconds and, crucially, the wind is offshore and light. It’s the first time in a while that it looks clean and has a bit of push. Aja’s a reef break that’s exposed to the north, and this east swell is a bit off its optimum, but it should still offer some shape. This is the standout of the week. It won’t be big, but it’ll be clean.
After that, we sink back into mediocrity. Thursday and Friday are small and unremarkable. Then the weekend gets blown out. A fresh cross-shore wind kicks up on the 20th and the surf gets lumpy and messy. It’s a mess.
The real story is the start of the following week. Monday the 21st sees a serious surge in energy, with readings jumping to 2433 – that’s strong to very strong. But there’s a near gale blowing from the northeast. It’s creating a big, stormy mess at the beach. The swell is there, but the wind is going to make it unrideable. By Tuesday afternoon, we’re looking at storm force cross-onshore winds, and it’s just a blown-out disaster. There is some serious size out there, but it’s not for paddling.
So, in a nutshell: the only real window of clean surf in the next 10 days is Wednesday morning, the 16th. It’s a small but clean day. The second week looks like it’s going to be all about the storm, and that’s a pass for us.
The water temp is a balmy 84°, which is spot on for this time of year. At least you won’t need a wetsuit when you’re staring at the flatness.
Keep an eye on that Wednesday, and otherwise, find something else to do.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Fri afternoon. Warm (max 29°C on Fri morning, min 27°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Mon morning. Warm (max 29°C on Tue afternoon, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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) | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | E 14 | E 14 | E 14 | E 14 | E 7 | E 7 | E 13 | E 13 | E 13 | ESE 9 | E 16 | NNW 8 | E 9 | E 9 | E 9 |
Wave Graph | |||||||||||||||||||||
180 | 198 | 157 | 92 | 64 | 42 | 61 | 64 | 62 | 61 | 124 | 159 | 55 | 54 | 31 | 0 | 5 | 11 | 136 | 136 | 108 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off |
High Tide | 7:02PM2.16m | 6:54AM2.27m | 7:30PM2.19m | 7:35AM2.25m | 7:57PM2.20m | 8:14AM2.19m | 8:22PM2.18m | 8:52AM2.08m | 8:45PM2.14m | 9:29AM1.95m | 9:09PM2.08m | 10:07AM1.80m | 9:34PM2.00m | ||||||||
Low Tide | 12:42PM0.26m | 00:57AM0.67m | 1:18PM0.28m | 1:33AM0.54m | 1:50PM0.36m | 2:08AM0.45m | 2:20PM0.49m | 2:41AM0.41m | 2:47PM0.63m | 3:14AM0.42m | 3:13PM0.79m | 3:47AM0.48m | 3:39PM0.94m | ||||||||
6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | |
mm | — | — | 2 | — | 4 | 2 | — | — | — | — | 1 | 1 | 3 | 3 | 5 | 2 | 3 | 2 | 2 | 1 | — |
Temp °C | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 29 | 28 | 27 |
Feels °C | 31 | 32 | 33 | 33 | 31 | 32 | 30 | 31 | 29 | 30 | 30 | 29 | 29 | 29 | 29 | 31 | 33 | 31 | 33 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | N 7 | S 7 | S 7 | E 14 | E 14 | E 13 | E 13 | E 13 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 |
180 | 198 | 157 | 92 | 64 | 42 | 26 | 27 | 34 | 61 | 62 | 56 | 55 | 54 | 243 | 260 | 260 | 227 | 136 | 136 | 108 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | ESE 8 | S 7 | E 15 | E 14 | N 7 | E 14 | S 7 | N 6 | N 5 | N 5 | SSW 7 | E 13 | SW 9 | SW 8 | NNW 8 | E 14 | SSE 6 | E 14 |
21 | 21 | 20 | 40 | 8 | 38 | 61 | 24 | 62 | 15 | 6 | 5 | 5 | 5 | 31 | 19 | 11 | 11 | 62 | 18 | 100 | |
Swell 3 Height (m) Direction Period (s) | S 7 | S 7 | ESE 6 | S 7 | E 15 | S 7 | S 7 | E 14 | N 6 | N 6 | S 7 | S 6 | S 7 | N 5 | SW 9 | — | E 16 | SW 9 | NNW 7 | NNW 6 | SSE 6 |
8 | 8 | 8 | 8 | 39 | 4 | 8 | 64 | 13 | 7 | 8 | 7 | 4 | 2 | 12 | — | 5 | 12 | 15 | 8 | 10 | |
Wind waves Height (m) Direction Period (s) | — | — | ESE 6 | SE 4 | ESE 7 | SE 6 | SE 6 | ESE 6 | E 5 | E 6 | E 7 | E 7 | ESE 8 | ESE 9 | — | — | — | E 10 | SSE 6 | — | ESE 3 |
— | — | 24 | 6 | 48 | 54 | 71 | 56 | 43 | 98 | 124 | 159 | 218 | 264 | — | — | — | 423 | 37 | — | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 0 | 0 | 25 | 0 | 24 | 15 | 15 | 15 | 15 | 15 | 598 | 49 | 598 | 52 | 52 | 49 | 0 | 0 | 0 |
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.










