Surf Forecasts:
Aja surf forecast from 20 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6PM (local time) - 8ft (2.5m), 14s period, E swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 3PM (local time) - 8ft (2.5m), 18s period, E swell with 4,528 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 6PM (local time) - 2.5ft (0.8m), 7s period with ENE 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 (Aug 20) at 6PM. The primary swell is predicted to be 0.8m and 7s 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 2.5m 18s and forecast to arrive on Monday (Aug 24) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 8s period and expected on Friday (Aug 21) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 20th Aug) | 2.5ft (0.8m) 7s |
| Best Surf | 6PM (Tue 25th Aug) | 8ft (2.5m) 14s |
| Most Powerful | 3PM (Mon 24th Aug) | 8ft (2.5m) 18s |
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 the table for this stretch.
Well, I gotta be straight with you—this is a tough one. For the next few days, Aja is getting hammered by strong winds and a whole lot of nothing. Thursday the 20th through Sunday the 23rd are basically a write-off, with zero to tiny swell and stormy winds. You’re looking at a solid four-day gap before anything even thinks about showing up.
Then, Monday the 24th of August, things start to get interesting. We’ve got a big pulse of energy arriving. The swell is coming from the east at 7ft, with a very long period of 18 seconds. That’s proper groundswell. The combined energy is a massive 2686, which is strong. The wind is a cross-offshore breeze from the ESE at 19 mph, which will keep the surface clean. The water temperature is 84°, which is bang on average for this time of year. This is a reef break, and that long-period east swell will wrap in nicely. Monday afternoon looks even better, with the swell pushing up to 8ft and the energy jumping to 4528. That’s serious power. This is the standout window. It’s a bit on the big side for beginners, but for the experienced crew, this is going to be firing. The only downside is that with a reef break and a long-period swell, it can get a bit wally and a bit intense, but for the right surfer, it’s pure gold.
Tuesday the 25th keeps the goods coming. The swell is still big, around 8ft to 10ft from the east, with a period of 16 to 14 seconds. The energy is still very strong, well over 3000. Winds are lighter from the ENE, and it’s clean. Again, this is for the experienced surfer only. The crowd situation at Aja is "sometimes," so you might have company, but it’s not a zoo.
By Wednesday the 26th, the swell starts to drop back to 5ft, but the wind goes onshore from the NW. That’s a dealbreaker. It's going to be messy.
After that, from the 27th of August all the way through the 3rd of September, we’re back to small, choppy, and generally poor conditions. There’s a little bump on the 2nd of September with 4ft from the east, but it’s cross-shore wind and short period, so it’s not going to be any good. A four-day gap, then a couple of days of magic, then a long stretch of nothing.
So, to put it simply: If you’ve got a board and the skills, you’re looking at Monday the 24th and Tuesday the 25th of August. That’s your window. Don’t be late.
Rusty.
Short Range ForecastHeavy rain (total 40mm), heaviest during Fri afternoon. Warm (max 29°C on Thu morning, min 26°C on Fri afternoon). Winds increasing (moderate winds from the ESE on Thu night, near gales from the SE by Fri afternoon). | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Sun morning. Warm (max 29°C on Tue morning, min 25°C on Sun night). Winds decreasing (fresh winds from the ESE on Sun night, light winds from the NNE by Tue night). | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | ESE 8 | ENE 8 | S 9 | ENE 8 | SE 7 | ENE 9 | SSE 9 | SSE 9 | E 16 | E 18 | E 6 | ENE 13 | E 18 | E 18 | ESE 16 | E 16 | E 14 | E 13 | ENE 12 | ENE 13 | ENE 11 |
Wave Graph | |||||||||||||||||||||
0 | 27 | 0 | 21 | 0 | 8 | 0 | 0 | 5 | 6 | 288 | 17 | 2686 | 4528 | 0 | 3567 | 3471 | 1533 | 794 | 405 | 97 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | on | on | cross-on |
High Tide | 12:36PM1.52m | 11:36PM1.81m | 2:40PM1.47m | 00:39AM1.71m | 4:44PM1.56m | 2:33AM1.68m | 5:37PM1.69m | 4:05AM1.75m | 6:09PM1.81m | 5:01AM1.88m | 6:36PM1.91m | 5:43AM2.00m | 7:00PM1.99m | ||||||||
Low Tide | 5:27PM1.21m | 7:17AM0.86m | 6:30PM1.37m | 9:01AM0.87m | 9:01PM1.43m | 10:27AM0.78m | 10:42PM1.35m | 11:20AM0.66m | 11:30PM1.23m | 11:59AM0.54m | 00:05AM1.10m | 12:30PM0.43m | 00:35AM0.96m | ||||||||
6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | |
mm | 2 | 2 | 9 | 3 | 11 | 5 | 3 | 2 | 3 | 3 | 1 | 4 | 3 | 1 | 4 | 1 | 1 | — | — | — | — |
Temp °C | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 27 | 28 | 29 | 28 |
Feels °C | 31 | 30 | 29 | 29 | 24 | 26 | 26 | 27 | 26 | 28 | 27 | 27 | 27 | 26 | 30 | 32 | 32 | 31 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | SW 8 | SW 8 | SW 10 | SW 10 | SW 10 | ESE 10 | S 10 | S 10 | ESE 16 | SSE 9 | SSE 8 | ESE 16 | E 16 | E 14 | E 13 | ENE 12 | ENE 13 | S 9 |
111 | 189 | 225 | 54 | 82 | 115 | 318 | 217 | 21 | 930 | 855 | 487 | 937 | 388 | 2616 | 3567 | 3471 | 1533 | 794 | 405 | 78 | |
Swell 2 Height (m) Direction Period (s) | SW 9 | SW 9 | ESE 11 | ENE 8 | SSW 8 | ENE 9 | SW 10 | — | E 16 | E 18 | ESE 17 | ENE 13 | ESE 18 | SSW 10 | SSW 10 | SE 7 | SSW 10 | S 10 | SSW 10 | S 10 | ENE 11 |
12 | 12 | 12 | 21 | 7 | 8 | 318 | — | 5 | 6 | 112 | 17 | 2181 | 107 | 133 | 126 | 154 | 154 | 72 | 94 | 97 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | ENE 8 | SW 9 | — | — | — | — | — | — | E 18 | E 14 | — | SW 10 | — | — | SSW 10 | SE 7 | SE 10 | SSE 8 | SW 10 | E 13 |
100 | 27 | 51 | — | — | — | — | — | — | 6 | 16 | — | 102 | — | — | 154 | 79 | 15 | 21 | 15 | 32 | |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 7 | ESE 6 | SE 7 | SE 7 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | E 6 | E 6 | SE 10 | E 18 | E 18 | SE 8 | NE 8 | — | N 6 | — | NNW 5 | NNW 6 |
238 | 173 | 123 | 314 | 817 | 1695 | 1647 | 1774 | 993 | 110 | 288 | 2137 | 2686 | 4528 | 733 | 64 | — | 31 | — | 28 | 33 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 14 | 590 | 590 | 598 | 598 | 590 | 624 | 813 | 590 | 761 | 719 | 14 | 15 | 15 | 15 | 10 | 17 | 10 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











