Surf Forecasts:
Aja surf forecast from 10 Aug 2026:
- Best quality surf: Monday 10 Aug, 3PM (local time) - 3ft (0.9m), 13s period, E swell with offshore winds.
- Most powerful swell: Monday 10 Aug, 6PM (local time) - 3.5ft (1.1m), 13s period, E swell with 407 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 3PM (local time) - 3ft (0.9m), 13s 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 Monday (Aug 10) at 3PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.7m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Aja in the next 16 days are 1.1m 13s and forecast to arrive on Monday (Aug 10) at 6PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 11s period and expected on Monday (Aug 10) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 10th Aug) | 3ft (0.9m) 13s |
| Best Surf | 3PM (Mon 10th Aug) | 3ft (0.9m) 13s |
| Most Powerful | 6PM (Mon 10th Aug) | 3.5ft (1.1m) 13s |
Table - best surf conditions forecast for Aja over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer for Aja. This is a reef break, exposed, and it’s inconsistent, so we need to pick our moments. The water’s sitting at 86°, which is about average for this time of year, so no nasty surprises there.
The outlook starts off with a bit of a pulse. Monday the 10th of August morning is the standout. We’ve got a 4ft easterly swell, with a 14-second period, packing moderate energy (526). The wind is offshore from the southeast at 15 mph. That’s clean. It’s the best of the whole window. The afternoon drops to 3ft, still clean, but not as good.
Tuesday the 11th of August morning is surfable but ordinary with 3ft easterly swell and a 12-second period. Light wind keeps it clean, but it’s a step down.
From Wednesday the 12th of August right through to Sunday the 16th, it’s a long, flat patch. We get a brief, weak pulse on Sunday the 16th of August morning with a 3ft easterly swell, but it’s a short-period 6 seconds, so it’ll be a bit of a mess.
After that, it’s mostly tiny waves and poor conditions with onshore or cross-offshore winds right into the end of the window. There’s a flicker of life on Thursday the 20th of August morning with a 3ft easterly swell and strong offshore winds, but the report says the surf conditions are poor, so I wouldn’t get too excited. Similarly, Tuesday the 25th of August afternoon shows a 1ft easterly swell with a 13-second period and an offshore breeze, but it’s just surfable, not good.
Forget the second week; it’s mostly a write-off.
Honestly, if you’ve got a window on Monday the 10th of August morning, that’s your go. Get it while it’s there. Keep in mind it’s inconsistent, so it’s not a bank, but when it’s on, it’s the best we’ll see.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Wed morning. Warm (max 30°C on Tue afternoon, min 27°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 43mm), heaviest during Thu morning. Warm (max 29°C on Fri afternoon, min 27°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 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) | E 14 | E 13 | E 12 | E 12 | E 12 | E 12 | E 11 | E 11 | E 10 | E 10 | E 10 | W 5 | E 10 | W 7 | WNW 6 | E 11 | E 11 | E 11 | E 6 | E 10 | E 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 526 | 280 | 248 | 181 | 136 | 134 | 86 | 83 | 51 | 74 | 74 | 22 | 31 | 24 | 12 | 59 | 61 | 79 | 59 | 53 | 51 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-off | cross-off | cross | on | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off |
High Tide | 6:15PM1.96m | 5:19AM2.15m | 6:57PM2.07m | 6:13AM2.27m | 7:34PM2.14m | 7:02AM2.33m | 8:09PM2.18m | 7:47AM2.32m | 8:40PM2.18m | 8:31AM2.25m | 9:10PM2.16m | 9:13AM2.13m | 9:37PM2.12m | ||||||||
Low Tide | 11:23AM0.31m | 11:40PM1.16m | 12:16PM0.18m | 00:29AM1.03m | 1:02PM0.11m | 1:13AM0.89m | 1:43PM0.11m | 1:55AM0.78m | 2:21PM0.18m | 2:35AM0.69m | 2:55PM0.31m | 3:14AM0.64m | 3:26PM0.48m | ||||||||
 | |  |  |  |  | |  |  | | | | | | | | | | | | | |
 | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — |
 | — | 7:09 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — |
mm | — | — | — | 2 | — | 3 | 5 | — | 5 | 8 | 7 | 8 | 2 | 5 | 10 | 3 | — | — | 2 | 1 | — |
Temp °C | 29 | 29 | 28 | 29 | 30 | 28 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 29 | 27 | 28 | 28 | 28 |
Feels °C | 32 | 31 | 32 | 33 | 34 | 33 | 30 | 28 | 31 | 32 | 32 | 31 | 33 | 33 | 30 | 31 | 31 | 29 | 31 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | S 10 | S 9 | S 9 | S 9 | SSW 9 | SSW 8 | SSW 8 | S 8 | S 8 | SSW 8 | SSW 8 | S 9 | SSW 8 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 9 |
| kJ | 658 | 573 | 533 | 426 | 392 | 239 | 192 | 270 | 227 | 180 | 86 | 91 | 160 | 160 | 71 | 160 | 184 | 172 | 160 | 157 | 96 |
Swell 2 Height (m) Direction Period (s) | SW 11 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | E 11 | E 10 | E 10 | SW 8 | SW 9 | WNW 5 | W 7 | SW 8 | E 6 | E 6 | E 11 | E 10 | E 10 | S 8 |
| kJ | 593 | 486 | 256 | 122 | 120 | 150 | 117 | 83 | 51 | 74 | 66 | 62 | 7 | 24 | 70 | 17 | 26 | 79 | 52 | 53 | 42 |
Swell 3 Height (m) Direction Period (s) | E 14 | E 13 | E 12 | E 12 | E 12 | E 12 | E 11 | E 6 | N 9 | N 8 | E 10 | W 5 | E 10 | E 10 | WNW 6 | E 11 | E 11 | W 6 | W 7 | W 7 | E 10 |
| kJ | 526 | 280 | 248 | 181 | 136 | 134 | 86 | 9 | 14 | 18 | 74 | 11 | 31 | 17 | 12 | 59 | 61 | 7 | 4 | 4 | 51 |
Wind waves Height (m) Direction Period (s) | — | E 7 | — | — | — | — | — | — | — | — | — | W 5 | — | — | — | — | — | E 6 | E 6 | E 6 | E 6 |
| kJ | — | 53 | — | — | — | — | — | — | — | — | — | 22 | — | — | — | — | — | 71 | 59 | 47 | 52 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 613 | 613 | 16 | 10 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 0 | 0 | 14 | 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.
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