Surf Forecasts:
Tengan surf forecast from 22 Aug 2026:
- Most powerful swell: Wednesday 26 Aug, 6AM (local time) - 18ft (5.5m), 12s period, NNW swell with 8,641 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 5.5m 12s and forecast to arrive on Wednesday (Aug 26) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.0m 11s period and expected on Wednesday (Aug 26) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Wed 26th Aug) | 18ft (5.5m) 12s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's happening at Tengan.
I'm not gonna sugarcoat it – this is a rough few weeks. There's a huge dry spell at the start. From Saturday the 22nd right through Monday the 24th, we're looking at flat, bumpy, onshore junk. Don't even bother waxing up.
Finally, Tuesday the 25th, the swell comes alive, but it's a nasty one. You've got a 10ft wave from the ESE, with a massive combined energy of 4497, but the wind is a messy cross-shore. The report calls it marginal and says the tide is questionable. It's gonna be a churning, choppy mess. Then Wednesday the 26th, the wind is screaming out of the NW at 28 mph, with a 13ft swell from the north (energy reading 4962). That's big, dangerous, and for experts only. The afternoon is even worse, with a near-gale offshore wind that'll make it nearly impossible to get into anything.
From there, it's all downhill. Thursday the 27th brings gale-force winds, and from Friday the 28th all the way to Sunday the 6th of September, it's a parade of tiny, short-period windswell and constant cross-onshore winds. Sure, the swell bumps up to 6ft on the 2nd and 10ft on the 3rd of September, but the wind is absolutely destroying it. The energy hits 6191 on the 3rd, but it's blowing a near-gale cross-onshore. That's a kiteboarding forecast, not a surfing one.
There's no standout here. The water temp is a nice, average 84°, but that's about the only thing going for it. The wind is never your friend, and when the swell finally shows up, it's either too big and wild or too small and blown out. For a spot that's already inconsistent, this is a full-on bust. The forecasts can change, but right now, it's a long wait.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat afternoon. Warm (max 29°C on Tue morning, min 27°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 228mm), heaviest during Thu morning. Warm (max 29°C on Tue afternoon, min 27°C on Wed night). Winds increasing (moderate winds from the N on Tue afternoon, stormy winds from the S by Thu morning). | |||||||||||||||||||
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | ENE 9 | SSE 6 | E 14 | ESE 13 | ESE 12 | ESE 16 | ESE 15 | ESE 18 | ESE 17 | E 16 | E 15 | N 12 | ENE 10 | E 10 | E 10 | E 10 | E 16 | E 15 | E 15 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 8 | 77 | 37 | 35 | 30 | 166 | 428 | 2830 | 4438 | 5263 | 3012 | 4589 | 177 | 29 | 69 | 302 | 20 | 17 | 17 | 48 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | on | on | cross-on | cross | cross | cross-off | cross-off | off | off | cross-off | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:38PM1.54m | 1:49AM1.61m | 5:20PM1.67m | 3:33AM1.68m | 5:47PM1.78m | 4:32AM1.81m | 6:10PM1.88m | 5:13AM1.94m | 6:32PM1.97m | 5:49AM2.06m | 6:54PM2.05m | 6:24AM2.15m | 7:16PM2.11m | |||||||
Low Tide | 8:45PM1.43m | 10:03AM0.76m | 10:24PM1.33m | 10:55AM0.64m | 11:07PM1.21m | 11:31AM0.52m | 11:38PM1.07m | 12:00PM0.41m | 00:07AM0.94m | 12:28PM0.33m | 00:36AM0.80m | 12:54PM0.29m | 1:06AM0.68m | |||||||
 |  |  | | | |  | | | |  | | | | | | | | |  | |
 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | 2 | — | — | — | — | 1 | — | — | — | — | 4 | 2 | 2 | 16 | 138 | 60 | 5 | 1 | — | — |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 29 | 29 | 28 | 27 | 27 | 28 | 29 | 29 | 28 |
Feels °C | 29 | 29 | 30 | 29 | 29 | 30 | 30 | 29 | 31 | 31 | 28 | 26 | 26 | 26 | 18 | 20 | 24 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SW 10 | SSW 10 | SW 9 | SW 9 | ESE 15 | ESE 18 | ESE 17 | E 16 | E 15 | N 12 | E 11 | WNW 11 | E 13 | E 10 | E 16 | SW 12 | SW 12 | WSW 11 |
| kJ | 954 | 544 | 441 | 386 | 220 | 162 | 428 | 2830 | 4438 | 5263 | 3012 | 4589 | 55 | 3655 | 52 | 106 | 5 | 2515 | 2302 | 560 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ESE 10 | E 14 | ESE 13 | ESE 12 | ESE 16 | SW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 9 | E 12 | ENE 10 | E 10 | E 10 | E 10 | E 16 | E 12 | E 12 | SSW 10 |
| kJ | 8 | 18 | 37 | 35 | 30 | 166 | 93 | 88 | 50 | 28 | 48 | 107 | 177 | 29 | 69 | 302 | 20 | 11 | 11 | 271 |
Swell 3 Height (m) Direction Period (s) | — | ENE 9 | SE 10 | SE 9 | E 8 | SE 9 | ENE 10 | ENE 10 | — | — | — | E 12 | SE 10 | E 13 | — | E 18 | — | E 15 | E 15 | E 8 |
| kJ | — | 16 | 4 | 3 | 5 | 3 | 11 | 19 | — | — | — | 266 | 16 | 14 | — | 6 | — | 17 | 17 | 48 |
Wind waves Height (m) Direction Period (s) | S 10 | SSE 6 | ESE 4 | ESE 5 | ESE 4 | E 4 | E 4 | E 6 | NNE 5 | NNE 6 | N 8 | WNW 9 | WNW 11 | SSW 8 | SW 12 | SW 12 | SW 12 | SSE 8 | SSE 8 | — |
| kJ | 919 | 77 | 11 | 22 | 15 | 12 | 15 | 86 | 59 | 198 | 1437 | 3701 | 9060 | 1728 | 8603 | 8019 | 5173 | 717 | 484 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 621 | 621 | 13 | 13 | 13 | 13 | 13 | 12 | 37 | 37 | 621 | 737 | 745 | 621 | 737 | 737 | 737 | 840 | 52 | 13 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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Information about the Tengan Surf forecast
The above surf forecast table for Tengan provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tengan can be found by selecting the local surf guide option on the grey menu. Our Tengan 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 (Tengan) 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 Tengan 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.
Tengan is 5 km (3 miles) from the city of Ishikawa. If you plan a holiday in Okinawa, look for hotels and other accommodation in Ishikawa. Ishikawa has rooms for a wide range of budgets as well as car hire and transport links.
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