Surf Forecasts:
Aja surf forecast from 4 Aug 2026:
- Best quality surf: Thursday 6 Aug, 6PM (local time) - 16ft (5.0m), 17s period, E swell with cross-onshore winds.
- Most powerful swell: Friday 7 Aug, 6PM (local time) - 34ft (10.5m), 13s period, NNE swell with 39,785 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 6PM (local time) - 16ft (5.0m), 17s 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 Thursday (Aug 06) at 6PM. The primary swell is predicted to be 5.0m and 17s period with a secondary swell of 3.5m and 8s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Aja in the next 16 days are 10.5m 13s and forecast to arrive on Friday (Aug 07) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 11.0m 14s period and expected on Sunday (Aug 09) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 6th Aug) | 16ft (5.0m) 17s |
| Best Surf | 6PM (Thu 6th Aug) | 16ft (5.0m) 17s |
| Most Powerful | 6PM (Fri 7th Aug) | 34ft (10.5m) 13s |
Table - best surf conditions forecast for Aja over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s in store for Aja over the next couple of weeks.
Right off the bat, I’ve gotta be straight with you – this is a tough stretch. The first week and a half is basically a write-off for decent waves. We’ve got a massive, messy swell train coming through, but the wind is going to absolutely wreck it. The combined swell energy is monstrous, hitting as high as 30,973 on Friday the 7th, but that’s no good to us when it’s blowing a Violent Storm force and the waves are hitting 26 feet. That’s strictly for the kamikaze crew, and even then, the conditions are going to be dangerous. The whole thing is a bit of a mess. For most of the first week, the wind is howling onshore or cross-onshore, turning any potential into a blown-out, lumpy disaster. The water temp is about what you’d expect for this time of year.
The only real window of opportunity, and I’m using that word loosely, arrives on Tuesday, August 11th. The wind finally swings to a light cross-offshore, and we get a clean surface. The swell is a solid 8 feet from the WNW, with a period of 12 seconds – that’s a proper groundswell with some grunt. The combined energy is moderate at 1,953. This is your best bet all forecast. Tuesday morning looks the cleanest, though the afternoon is also ok. Just keep in mind that Aja is a reef break that’s inconsistent, so you’ll be waiting for sets. Also, it can get crowded in there, so get out early.
After that little window, it drops right back off. Wednesday the 12th is small and weak, and from then on it’s mostly tiny, weak, and choppy. There’s a moment on Thursday the 13th morning where it goes totally glassy, with a 2 foot, 12-second swell from the east, but the energy is a measly 168. You could get a little log out for a few knee-high rollers, but it’s not going to get your heart racing.
Saturday the 5th and Sunday the 6th are a total loss. The wind is howling. By the second week, from the 14th onwards, it’s just small, weak, wind-affected dribble. Don’t bother.
If you’ve got a kite, the first week has plenty of wind, but the waves are too big and messy for a fun session. For a paddle, you’re looking at a very narrow window on Tuesday the 11th.
Rusty, signing off.
Short Range ForecastHeavy rain (total 98mm), heaviest during Fri afternoon. Warm (max 31°C on Wed morning, min 28°C on Tue night). Winds increasing (light winds from the ENE on Tue night, extremely windy from the NNW by Fri afternoon). | Days 5-7 Weather SummaryHeavy rain (total 521mm), heaviest during Fri night. Warm (max 29°C on Sat morning, min 28°C on Fri night). Winds decreasing (extremely windy from the NNW on Fri night, strong winds from the NW by Sat night). | ||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 17 | NE 6 | E 17 | E 17 | E 17 | E 17 | E 18 | E 17 | N 12 | N 12 | W 11 | NW 10 | NNE 14 | SW 15 | SW 14 | E 15 | E 14 | ENE 14 | WNW 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 19 | 3691 | 7700 | 10945 | 13574 | 18219 | 17164 | 17439 | 11726 | 5977 | 1561 | 82 | 0 | 0 | 69 | 146 | 331 | 3775 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross | cross | cross | cross | cross | cross-off |
High Tide | 10:45PM2.00m | 11:18AM1.77m | 11:23PM1.95m | 12:31PM1.64m | 00:13AM1.90m | 2:16PM1.59m | 1:26AM1.87m | 4:11PM1.67m | 2:56AM1.90m | 5:25PM1.82m | 4:16AM2.02m | 6:15PM1.96m | |||||||
Low Tide | 5:16AM0.68m | 5:06PM0.88m | 6:15AM0.68m | 5:55PM1.09m | 7:32AM0.67m | 7:13PM1.26m | 9:00AM0.60m | 9:06PM1.34m | 10:20AM0.47m | 10:37PM1.28m | 11:23AM0.31m | 11:40PM1.16m | |||||||
 |  |  |  |  | | | | | | | | | | | | | | | |
 | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 7:14 | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — |
mm | 3 | — | 1 | — | — | — | 17 | 29 | 48 | 183 | 12 | 11 | 23 | 92 | 119 | 69 | 9 | 3 | 3 |
Temp °C | 28 | 31 | 30 | 29 | 30 | 30 | 29 | 28 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 30 |
Feels °C | 31 | 34 | 31 | 31 | 28 | 27 | 24 | 19 | 16 | 11 | 24 | 26 | 29 | 14 | 14 | 15 | 22 | 24 | 28 |
Swell 1 Height (m) Direction Period (s) | E 17 | E 17 | E 17 | E 17 | E 17 | E 17 | E 18 | E 17 | ENE 16 | E 14 | NW 10 | NW 10 | NNE 14 | — | — | E 15 | E 14 | E 14 | WNW 13 |
| kJ | 2441 | 2651 | 3691 | 7700 | 10945 | 13574 | 18219 | 17164 | 13534 | 3273 | 1949 | 1561 | 82 | — | — | 69 | 146 | 191 | 3775 |
Swell 2 Height (m) Direction Period (s) | SSE 8 | S 8 | S 7 | — | — | — | — | — | — | N 16 | E 11 | S 15 | — | — | — | — | — | ENE 14 | E 13 |
| kJ | 22 | 18 | 17 | — | — | — | — | — | — | 330 | 1633 | 537 | — | — | — | — | — | 331 | 173 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NW 12 | NNE 11 | NNE 11 | — | — | — | — | — | — | ENE 10 |
| kJ | — | — | — | — | — | — | — | — | — | 794 | 736 | 238 | — | — | — | — | — | — | 11 |
Wind waves Height (m) Direction Period (s) | — | NE 6 | SE 7 | — | N 7 | N 8 | NNE 10 | N 11 | N 12 | N 12 | W 11 | S 11 | SSW 13 | SW 15 | SW 14 | SW 14 | WSW 14 | WSW 14 | SSW 11 |
| kJ | — | 19 | 26 | — | 602 | 1237 | 3404 | 9720 | 17439 | 11726 | 5977 | 4348 | 25193 | 51693 | 49540 | 39528 | 22364 | 13814 | 2388 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 17 | 49 | 598 | 598 | 831 | 778 | 598 | 1306 | 1306 | 719 | 755 | 39 | 719 | 755 | 719 | 610 | 610 | 607 | 607 |
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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