Surf Forecasts:
Corners surf forecast from 17 Aug 2026:
- Best quality surf: Saturday 22 Aug, 3AM (local time) - 10ft (3.0m), 8s period, SE swell with glassy winds.
- Most powerful swell: Thursday 20 Aug, 3PM (local time) - 10ft (3.0m), 10s period, SE swell with 1,531 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 9PM (local time) - 2.5ft (0.7m), 9s period with SW swell.
Best Forecast Surf Conditions for Corners this week:
The surf forecast for Corners over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 9PM. The primary swell is predicted to be 0.7m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Corners in the next 16 days are 3.0m 10s and forecast to arrive on Thursday (Aug 20) 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 2.5m 8s period and expected on Thursday (Aug 20) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 17th Aug) | 2.5ft (0.7m) 9s |
| Best Surf | 3AM (Sat 22nd Aug) | 10ft (3.0m) 8s |
| Most Powerful | 3PM (Thu 20th Aug) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Corners over the next 16 days.
The Lowdown
Alright, let’s get into it. The only spot on the radar for this stretch is Corners. It’s a tricky reef setup for advanced surfers only, and it’s exposed to the open ocean, but it picks up swell from the SW quadrant best. Water temp is sitting at 84°, which is pretty much bang on average for this time of year, so no shocker there.
The outlook starts off pretty quiet. Monday the 17th has tiny 2ft SW swell with an 8-second period and weak energy (90). The wind is cross-off from the ESE, so the surface is clean, but there’s just not enough push to get excited about. Tuesday the 18th is even smaller at 2ft, with offshore wind but still only 60 weak energy. Wednesday the 19th drops right off to 1.0-1ft and the wind is stronger and cross-off, so it’s just not worth paddling out.
Then things get interesting. Thursday the 20th sees a big jump in swell, 10ft from the SE, with energy spiking to 1229. That’s a lot of power, but the wind is cross-off and there’s a risk of thunderstorms. The period is short at 8 seconds, so it’s a bit of a messy, lumpy beast. At that size, it’s expert-only territory. The trend continues into Friday the 21st with 8-8ft SE swell and moderate energy (756-976), still cross-off winds, but the quality is only marginal. Saturday the 22nd and Sunday the 23rd stay in the 7-8ft range, but the wind switches to a cross-shore, bringing some chop and making it feel less clean.
Monday the 24th is a welcome change. Swell drops to 5ft from the S, period still 8 seconds, but energy is a modest 324 and the wind is light cross-off. The conditions are described as “good”, and at this size it’s more manageable for a strong intermediate. Tuesday the 25th is actually the standout window. 4ft S swell with a 10-second period, offshore NE breeze at 15 km/h, and clean conditions. That’s a proper little groundswell with nice shape, and the energy is consistent at 322-327. For a reef break like Corners, that’s a sweet spot. Wednesday the 26th is similar, with 4ft SSW swell, 10-second period, and light cross-off flow, but it drops off quickly after that.
From Thursday the 27th onward, it’s a long, sorry stretch. Swell collapses to under 3ft, wind goes onshore or cross-shore, and the energy drains away. That runs all the way through to the end of August and into September 1st. There’s a brief flash on the afternoon of September 1st – a 15ft NW swell with 9-second period and massive energy of 3670, but it’s a short-period, powerful, and likely unruly for a reef. That’s a big, raw, expert-only swing, and it’s too far out to get too excited about. The morning of the 1st is still small.
So, the best bet in the whole 16 days is Tuesday the 25th and Wednesday the 26th, with that clean, offshore, 4ft SSW groundswell. It’s not huge, but it’s clean, consistent, and the reef will shape it up nicely. If you’re an advanced surfer, Thursday the 20th through Sunday the 23rd has size, but the quality is only marginal with the wind and short period. For the rest of the time, it’s a flat spell.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Wed night. Warm (max 29°C on Mon morning, min 27°C on Mon night). Winds increasing (light winds from the ESE on Mon morning, fresh winds from the ESE by Wed night). | Days 4-6 Weather SummaryHeavy rain (total 38mm), heaviest during Thu night. Warm (max 30°C on Sat morning, min 26°C on Thu night). Winds decreasing (fresh winds from the SE on Thu afternoon, calm by Fri night). | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | SW 8 | SW 8 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SE 8 | SE 10 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SSE 8 | SSE 8 | SSE 8 |
Wave Graph | |||||||||||||||||||||
74 | 74 | 77 | 35 | 34 | 34 | 18 | 11 | 11 | 1202 | 1531 | 1019 | 742 | 953 | 594 | 748 | 532 | 554 | 709 | 579 | 574 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off |
High Tide | 9:54AM2.02m | 10:07PM2.08m | 10:34AM1.85m | 10:36PM2.01m | 11:19AM1.67m | 11:07PM1.91m | 12:19PM1.50m | 11:42PM1.80m | 2:15PM1.40m | 00:33AM1.69m | 5:17PM1.48m | 2:15AM1.61m | 6:02PM1.61m | ||||||||
Low Tide | 4:00PM0.62m | 4:31AM0.58m | 4:28PM0.80m | 5:13AM0.66m | 4:55PM0.98m | 6:04AM0.75m | 5:24PM1.15m | 7:13AM0.83m | 6:02PM1.32m | 8:53AM0.84m | 8:41PM1.43m | 10:25AM0.77m | 11:03PM1.37m | ||||||||
6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | |
mm | — | — | — | — | — | 2 | 3 | 2 | 11 | 4 | 4 | 14 | 6 | 4 | 1 | 2 | 2 | 1 | — | — | — |
Temp °C | 29 | 29 | 27 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 27 | 30 | 29 | 27 | 28 | 29 | 27 |
Feels °C | 32 | 31 | 30 | 30 | 30 | 29 | 28 | 29 | 28 | 30 | 27 | 28 | 29 | 30 | 30 | 33 | 31 | 30 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 10 | S 8 | SW 9 | SW 9 | SW 9 | SW 10 | SW 10 | SW 10 |
74 | 74 | 77 | 35 | 34 | 34 | 18 | 11 | 11 | 14 | 12 | 12 | 14 | 23 | 210 | 64 | 141 | 119 | 106 | 79 | 38 | |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | S 7 | S 7 | S 7 | S 8 | S 8 | SW 8 | SW 9 | SSW 8 | — | — | E 11 | SW 10 | ENE 9 | SW 10 | SSW 9 | ENE 8 | ENE 8 | E 13 |
73 | 71 | 48 | 9 | 8 | 4 | 5 | 11 | 11 | 13 | 13 | — | — | 59 | 32 | 8 | 90 | 67 | 14 | 22 | 14 | |
Swell 3 Height (m) Direction Period (s) | S 7 | S 7 | S 7 | SE 10 | SSE 10 | SE 10 | S 8 | SSW 8 | S 11 | — | — | — | — | — | E 14 | ENE 9 | E 10 | ENE 9 | E 14 | E 14 | E 10 |
16 | 9 | 9 | 16 | 10 | 4 | 1 | 6 | 10 | — | — | — | — | — | 4 | 8 | 44 | 15 | 15 | 15 | 8 | |
Wind waves Height (m) Direction Period (s) | SE 5 | ESE 5 | ESE 5 | E 6 | E 6 | E 7 | ESE 8 | ESE 8 | ESE 8 | SE 8 | SE 10 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SSE 8 | SSE 8 | SSE 8 |
20 | 16 | 36 | 94 | 112 | 271 | 469 | 356 | 751 | 1202 | 1531 | 1019 | 742 | 953 | 594 | 748 | 532 | 554 | 709 | 579 | 574 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 4 | 4 | 0 | 0 | 619 | 860 | 609 | 601 | 601 | 619 | 619 | 4 | 619 | 0 | 4 | 609 | 601 | 601 | 619 | 4 |
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 Corners Surf forecast
The above surf forecast table for Corners provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Corners can be found by selecting the local surf guide option on the grey menu. Our Corners 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 (Corners) 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 Corners 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.
Corners is 5 km (3 miles) from Misato. If you plan a holiday in Okinawa, look for hotels and other accommodation in Misato. Misato has rooms for a wide range of budgets as well as car hire and transport links.











