Surf Forecasts:
Aja surf forecast from 6 Sep 2026:
- Best quality surf: Thursday 10 Sep, 6PM (local time) - 3.5ft (1.0m), 9s period, N swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 6AM (local time) - 6.5ft (2.0m), 9s period, N swell with 617 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 6PM (local time) - 3.5ft (1.0m), 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 6PM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.2m and 2s. 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 2.0m 9s and forecast to arrive on Monday (Sep 07) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 10s period and expected on Saturday (Sep 12) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 10th Sep) | 3.5ft (1.0m) 9s |
| Best Surf | 6PM (Thu 10th Sep) | 3.5ft (1.0m) 9s |
| Most Powerful | 6AM (Mon 7th Sep) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Aja over the next 16 days.
The Lowdown
Alright, let’s cut it straight for Aja. The next couple weeks are mostly a flat spell or blown-out mess. The only time you’ll really want to paddle out is around Tuesday, September 15th.
Right now through the first week, it’s pretty grim. Monday the 7th has a 7 ft north swell, but a 30 km/h cross-onshore wind turns it into a washing machine (energy 612 – moderate). Tuesday and Wednesday are the same story with smaller surf. Thursday and Friday go offshore or cross-off, but the swell drops to 3 ft or smaller, so it’s barely rideable. Sunday the 13th throws up a 5 ft pulse, but with a short 6-second period and moderate cross-off wind, it’s a low-score marginal day.
The real deal hits Tuesday, September 15th. Clean offshore wind from the southeast at 12 mph, with a 4 ft east-northeast swell. Period bumps to 10 seconds by the afternoon (energy 274 – moderate). That’s the best combo of the whole outlook. Aja is an exposed reef, so a clean offshore breeze will make those waves hold their shape. It won’t be perfect direction-wise (optimum is north), but it’ll be the most fun you’ll have. Wednesday the 16th is a decent follow-up with lighter offshore wind, but the swell is smaller at 3 ft and energy fading.
After that, it’s back to small, weak surf. Heights barely 2 ft or less, and combined energy drops into the double digits. A few afternoons show clean wind, but the lack of swell means it’s a longboard-only or maybe a swim. The water temp is pretty average for this time of year, so no surprises there.
Bottom line: there’s a big gap of poor conditions, then a standout window on the 15th. Circle that Tuesday. Aja is inconsistent at the best of times, and this forecast shows exactly that.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon morning. Warm (max 28°C on Mon morning, min 26°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Thu afternoon. Warm (max 28°C on Thu morning, min 27°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 9 | NNW 8 | NNW 9 | NNW 8 | NNW 9 | N 8 | N 7 | N 7 | N 7 | N 7 | N 8 | N 9 | N 9 | N 8 | E 15 | E 14 | E 14 | E 7 | E 6 | E 14 | E 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 537 | 333 | 328 | 330 | 408 | 221 | 181 | 155 | 103 | 66 | 133 | 125 | 94 | 66 | 38 | 61 | 64 | 128 | 139 | 62 | 56 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:16PM1.85m | 4:19AM1.98m | 5:57PM1.98m | 5:20AM2.12m | 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 | ||||||||
Low Tide | 10:15AM0.52m | 10:44PM1.22m | 11:14AM0.39m | 11:36PM1.03m | 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 | |||||||
 |  |  | | |  |  | | | | |  | | | | | | | | |  | |
 | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:36 | — |
mm | 2 | — | — | — | — | — | — | — | — | — | 3 | 3 | 1 | 1 | — | — | — | — | 1 | — | 4 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 29 | 31 | 31 | 32 | 31 | 31 | 30 | 29 | 29 | 29 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 9 | E 8 | E 8 | SW 8 | S 8 | S 8 | S 8 | S 7 | S 7 | N 7 | N 8 | N 9 | N 9 | SE 7 | N 8 | N 8 | S 11 | SSE 9 | SSE 10 | S 10 | S 9 |
| kJ | 38 | 22 | 23 | 15 | 12 | 10 | 10 | 10 | 9 | 66 | 133 | 125 | 94 | 116 | 30 | 28 | 61 | 146 | 163 | 125 | 83 |
Swell 2 Height (m) Direction Period (s) | E 8 | S 9 | NE 10 | SSE 8 | E 9 | ENE 9 | ENE 8 | E 9 | SE 10 | E 9 | E 8 | SE 9 | ESE 8 | N 8 | E 15 | E 14 | N 7 | S 12 | E 14 | E 14 | E 13 |
| kJ | 35 | 25 | 24 | 14 | 14 | 8 | 14 | 6 | 15 | 13 | 12 | 21 | 13 | 66 | 38 | 61 | 26 | 75 | 60 | 62 | 56 |
Swell 3 Height (m) Direction Period (s) | E 13 | SW 8 | S 9 | NE 8 | SW 8 | E 8 | SE 10 | SE 10 | E 9 | S 7 | SE 9 | S 7 | E 15 | E 15 | WNW 6 | WNW 5 | E 14 | E 14 | N 7 | N 6 | N 6 |
| kJ | 3 | 17 | 14 | 18 | 9 | 6 | 16 | 15 | 6 | 8 | 14 | 4 | 39 | 39 | 3 | 3 | 64 | 62 | 8 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | N 9 | NNW 8 | NNW 9 | NNW 8 | NNW 9 | N 8 | N 7 | N 7 | N 7 | NE 4 | NE 6 | ESE 4 | SE 4 | — | ESE 7 | ESE 7 | ESE 7 | E 7 | E 6 | ESE 7 | ESE 7 |
| kJ | 537 | 333 | 328 | 330 | 408 | 221 | 181 | 155 | 103 | 3 | 6 | 10 | 29 | — | 120 | 170 | 185 | 128 | 139 | 161 | 176 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 673 | 673 | 598 | 673 | 673 | 598 | 675 | 999 | 15 | 15 | 15 | 17 | 0 | 0 | 24 | 15 | 15 | 15 | 15 | 15 | 16 |
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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