
Surf Forecasts:
Aja surf forecast from 8 Sep 2026:
- Best quality surf: Thursday 10 Sep, 9PM (local time) - 3.5ft (1.1m), 9s period, N swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 3PM (local time) - 4ft (1.2m), 9s period, N swell with 246 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 1.2m 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 9s period and expected on Tuesday (Sep 15) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 10th Sep) | 3.5ft (1.1m) 9s |
| Best Surf | 9PM (Thu 10th Sep) | 3.5ft (1.1m) 9s |
| Most Powerful | 3PM (Thu 10th Sep) | 4ft (1.2m) 9s |
Table - best surf conditions forecast for Aja over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on offer.
Honestly, for the next week and a half or so, it’s pretty grim. There’s a long stretch of poor to marginal conditions at Aja, and it’s not until the final few days that the ocean really starts to wake up. The first real surfable wave doesn’t show up until Wednesday the 11th, and even then, it’s nothing to write home about.
We start with Wednesday the 9th and Thursday the 10th – both days are a write-off. Cross-on winds from the north at 15 mph dropping to 9 mph, with a weak, short-period 4 ft swell from the north. The combined energy is low (212 on Wednesday morning), and it’s just choppy and messy. Not worth paddling out.
Friday the 11th is the first bit of hope. The wind swings offshore from the ESE, 9 mph in the morning, 12 mph in the afternoon. Swell drops to 3 ft from the NNW, period 9 seconds. It’s clean, but the waves are very ordinary – small, weak, and the combined energy is only 126. It’s surfable if you’re desperate, but it’s not good.
From Saturday the 12th through to Tuesday the 15th, the swell drops to tiny levels – 1 ft to 1 ft, mostly from the east with long periods of 14 seconds, but that’s just a long-period groundswell that’s barely breaking. The combined energy is in the double digits, barely registering. It’s clean, but there’s almost nothing to ride. Crowds won’t be an issue because nobody is out.
Wednesday the 16th to Monday the 21st is a bit of a mixed bag. The swell comes up a hair, 2 ft to 3 ft, mostly from the east, with periods that vary. A few sessions have light offshore winds, like Thursday the 17th morning with SE 6 mph, and the combined energy climbs to 167 on the Thursday afternoon. But it’s still marginal. Lots of “surfable but very ordinary” conditions. Not a standout.
Then, finally, on Tuesday the 23rd and Wednesday the 24th, we get a proper pulse. This is where it gets interesting. On Tuesday the 23rd, the swell jumps to 12 ft from the north, period 8 seconds, with ENE winds at 15 mph cross-offshore. The combined energy is a massive 1542 (morning) and then 5563 (afternoon) with a 10 ft east swell and a 14-second period. This is big energy, but it’s also a warning. That 12 ft swell is too big for beginners, and with the period at 8 seconds, it’s going to be a bit crumbly – not the cleanest shape. The 14-second period in the afternoon suggests better groundswell, but at 10 ft, that’s expert-only territory. The wind is cross-off, so it’s clean, but the size and power make it heavy.
By Wednesday the 24th, it drops to 8 ft from the NNW, period 9 seconds, but the wind picks up to 25 mph from the ENE. That’s a strong breeze, cross-off, but it’s going to be blown out. The combined energy is still huge at 1278 in the morning, but the afternoon drops to 7 ft with 28 mph winds – that’s messy, strong, and not fun for paddle surfing. Honestly, at that point, the setup at Aja looks more interesting for kite surfing than a standard surf.
The standout is the morning of Tuesday the 23rd. That 12 ft north swell, with cross-off winds and a 1542 energy reading, is the biggest and most powerful of the 16 days. It’s a clean, big wave window, but only for strong, experienced surfers. The water temperature is 84°, which is about normal for the time of year, so no wetsuit needed.
Overall, it’s a long wait for one proper hit. The first week is a bust, and the second week ends with a bang – but it’s a heavy, expert-only bang.
– Rusty
Short Range ForecastModerate rain (total 12mm), heaviest on Fri afternoon. Warm (max 28°C on Wed morning, min 26°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Mon night. Warm (max 28°C on Sat morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 8 | N 8 | N 8 | N 9 | N 9 | N 9 | NNW 9 | NNW 8 | E 15 | E 14 | E 14 | E 14 | E 14 | E 6 | E 7 | E 8 | E 9 | E 13 | E 13 | E 12 | E 12 |
Wave Graph | |||||||||||||||||||||
196 | 181 | 76 | 225 | 246 | 198 | 126 | 70 | 38 | 61 | 64 | 62 | 61 | 94 | 127 | 177 | 220 | 54 | 29 | 27 | 27 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off |
High Tide | 6:31PM2.09m | 6:09AM2.22m | 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 | ||||||||
Low Tide | 12:02PM0.30m | 00:19AM0.84m | 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 | ||||||||
6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | |
mm | — | — | — | — | — | 2 | 2 | 7 | 1 | — | — | — | — | 2 | — | 1 | 3 | 5 | 1 | — | 3 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 29 | 29 | 29 | 32 | 32 | 31 | 32 | 31 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 30 | 30 | 33 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 7 | NW 5 | N 9 | N 9 | N 9 | NNW 9 | NNW 8 | N 8 | N 7 | NNW 7 | SSE 6 | E 14 | E 14 | E 13 | E 13 | E 9 | E 13 | ESE 9 | ESE 9 | SW 10 |
10 | 9 | 7 | 225 | 246 | 198 | 126 | 70 | 28 | 26 | 17 | 33 | 61 | 62 | 56 | 55 | 220 | 54 | 197 | 208 | 52 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | E 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 5 | SE 9 | E 15 | E 14 | E 14 | E 14 | S 7 | S 8 | S 7 | S 7 | E 13 | SW 10 | E 13 | E 12 | E 12 |
16 | 14 | 21 | 21 | 20 | 20 | 42 | 19 | 38 | 61 | 64 | 62 | 15 | 19 | 17 | 8 | 54 | 14 | 29 | 27 | 27 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | S 7 | S 7 | S 7 | ESE 6 | SE 9 | S 7 | WNW 6 | E 9 | S 8 | NNW 7 | ESE 9 | N 6 | N 6 | SW 9 | SSW 7 | N 4 | SW 9 | SW 9 | NNW 5 |
16 | 15 | 9 | 8 | 8 | 8 | 20 | 8 | 3 | 6 | 10 | 15 | 16 | 6 | 3 | 3 | 9 | 3 | 21 | 12 | 3 | |
Wind waves Height (m) Direction Period (s) | N 8 | N 8 | N 8 | — | — | — | — | ESE 5 | SE 6 | SE 7 | SE 6 | E 5 | E 6 | E 6 | E 7 | E 8 | N 5 | ESE 9 | — | — | ESE 9 |
196 | 181 | 76 | — | — | — | — | 19 | 109 | 109 | 75 | 34 | 62 | 94 | 127 | 177 | 2 | 232 | — | — | 199 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 673 | 999 | 598 | 15 | 15 | 0 | 0 | 0 | 0 | 14 | 14 | 15 | 673 | 15 | 15 | 15 | 15 | 0 | 10 | 80 | 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.










