Surf Forecasts:
Aja surf forecast from 30 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 3AM (local time) - 5.5ft (1.7m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 12AM (local time) - 6ft (1.8m), 9s period, E swell with 541 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 3AM (local time) - 5.5ft (1.7m), 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 Wednesday (Sep 02) at 3AM. The primary swell is predicted to be 1.7m 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 1.8m 9s and forecast to arrive on Wednesday (Sep 02) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 11s period and expected on Wednesday (Sep 02) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 2nd Sep) | 5.5ft (1.7m) 9s |
| Best Surf | 3AM (Wed 2nd Sep) | 5.5ft (1.7m) 9s |
| Most Powerful | 12AM (Wed 2nd Sep) | 6ft (1.8m) 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 coming down the line for Aja. The next 16 days are a real mixed bag, with a big long wait and then a massive payoff right at the end for the crew who are ready for it.
We’ve got nothing on offer to start. The first chance for a wave doesn’t arrive until Tuesday, 1st September in the afternoon. The water temp is sitting right around 83°, which is bang on average for this time of year, so no surprises there.
That Tuesday afternoon is a bit of a tease. Aja (reef) gets a solid 8ft easterly swell with a 9-second period, and the wind is light and offshore from the SSE. The combined energy is moderate at 827, and it should produce very good surf. But the following day, Wednesday 2nd, it backs off: 5ft in the morning with similar offshore wind, dropping to 4ft in the afternoon. The energy drops too (395 and 213). It’s good, clean and rideable, but nothing to lose your mind over. After that, we’re back into a flat spell with poor conditions and tiny swell until around Wednesday, 9th September.
The real standout is the week after. Keep your eyes on Thursday, 10th September. In the morning, Aja gets a 8ft swell from the NNW with a moderate offshore breeze from the ESE. The energy is strong at 592, and it’s set to be very good. This is the one where the offshore wind will make it clean and lined up.
But the absolute highlight, the one for the logbook, is Friday, 11th September. This is where it gets heavy. We’re looking at a massive 15ft groundswell from the NNW with a 10-second period. The water will be pumping with an exceptional energy reading of 6047. The wind is light and offshore from the ESE in the morning and still offshore in the afternoon. This is serious, expert-only territory - over 8ft, it’s for the crew who know what they’re doing. The swell will have plenty of push, but at that size, a reef setup like Aja can handle it. The crowd might show up, but with that size, it’ll thin out the pack.
Saturday 12th holds similar 15ft size with a long 12-second period from the WNW, but the wind goes cross-offshore. It’s still exceptional for experts, but the power from that long period will make it bend and stand up, best handled on the reef. The energy readings are through the roof at 5266.
Things start to ease off from Sunday 13th, with the swell dropping and more cross-shore wind making things a bit scrappy. By Monday 14th, it’s back down to a more manageable 5ft and good conditions, a nice way to wind down after the big weekend.
Keep your wits about you for that second week. That Friday and Saturday are the real deal, but only for the experienced.
Rusty.
Short Range ForecastHeavy rain (total 53mm), heaviest during Wed afternoon. Warm (max 29°C on Mon afternoon, min 26°C on Wed afternoon). Winds decreasing (fresh winds from the E on Mon night, light winds from the SW by Tue night). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Sat morning. Warm (max 29°C on Thu morning, min 27°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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 | ESE 7 | ESE 8 | ESE 9 | ESE 9 | E 16 | E 9 | E 9 | E 9 | E 11 | E 11 | E 11 | S 10 | E 10 | E 16 | E 9 | W 8 | W 8 | E 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 40 | 0 | 0 | 0 | 0 | 19 | 541 | 476 | 306 | 23 | 38 | 37 | 0 | 50 | 5 | 78 | 105 | 72 | 61 |
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 | off | cross | cross-off | cross-off | off | off | off | cross-off | off | off | off | cross-off | cross-off | cross-off |
High Tide | 8:43AM2.14m | 9:00PM2.15m | 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 | |||||||
Low Tide | 2:42AM0.50m | 2:52PM0.49m | 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 | |||||||
 |  | |  |  | | | | | | | | | | | | |  | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:52 | — | 6:51 | — | — | 6:50 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — |
mm | — | — | — | 4 | 6 | 5 | 11 | 11 | 16 | 3 | — | — | — | 1 | 2 | 1 | 2 | — | — |
Temp °C | 27 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 27 |
Feels °C | 28 | 28 | 30 | 27 | 30 | 29 | 31 | 31 | 28 | 28 | 31 | 31 | 31 | 33 | 33 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | SSW 9 | SW 8 | SW 10 | SSW 9 | E 9 | SSW 10 | E 9 | SSW 10 | SW 10 | SW 12 | SW 10 | ESE 9 | ESE 8 | SSW 9 | SSW 9 | S 8 | S 8 |
| kJ | 86 | 99 | 86 | 25 | 35 | 106 | 541 | 567 | 306 | 965 | 337 | 700 | 348 | 138 | 96 | 348 | 232 | 140 | 105 |
Swell 2 Height (m) Direction Period (s) | SW 9 | SW 9 | SW 9 | SSW 8 | SSW 8 | S 8 | SSW 10 | E 9 | E 12 | E 8 | E 11 | ESE 9 | ESE 9 | SW 11 | E 16 | E 9 | W 8 | W 8 | W 7 |
| kJ | 51 | 39 | 29 | 21 | 19 | 31 | 402 | 476 | 11 | 137 | 38 | 129 | 144 | 90 | 5 | 78 | 105 | 72 | 44 |
Swell 3 Height (m) Direction Period (s) | E 11 | SW 9 | — | S 8 | S 8 | E 16 | E 14 | — | — | E 11 | — | E 11 | ESE 9 | E 10 | SW 10 | W 7 | E 10 | E 10 | E 9 |
| kJ | 40 | 40 | — | 10 | 12 | 19 | 15 | — | — | 23 | — | 37 | 17 | 50 | 26 | 37 | 88 | 68 | 61 |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | — | — | SSW 11 | — | SSE 8 | S 11 | S 10 | S 10 | SSW 10 | SSW 9 | — | — | — |
| kJ | 118 | 191 | 460 | 795 | 809 | 1015 | — | — | 1487 | — | 379 | 637 | 700 | 914 | 640 | 451 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 14 | 706 | 719 | 759 | 607 | 590 | 10 | 14 | 598 | 14 | 80 | 52 | 52 | 0 | 27 | 0 | 14 | 14 | 15 |
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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