Surf Forecasts:
Tengan surf forecast from 6 Aug 2026:
- Most powerful swell: Friday 7 Aug, 3PM (local time) - 25ft (7.5m), 11s period, NW swell with 13,533 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 7.5m 11s and forecast to arrive on Friday (Aug 07) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 7.5m 11s period and expected on Friday (Aug 07) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Fri 7th Aug) | 25ft (7.5m) 11s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, let’s get this straight. Looking at the charts for the Tengan area, it’s a pretty grim picture for the next couple of weeks. We’ve got a serious stretch of blown-out, stormy conditions and no real surf to speak of. The first few days are a write-off, with severe gales and messy, dangerous seas. We’re talking huge, stormy swell on Friday the 7th, with 18ft to 25ft of windblown chaos and a combined swell energy of 11014 to 14579. That’s just not surfable. That’s survival stuff. You wouldn’t even get out the back.
After that, the wind settles a bit but the swell just drops off a cliff. From Saturday the 8th through Sunday the 9th, we’re looking at tiny, weak waves around 2ft to 2ft with cross-shore winds and storm risks. The energy is weak, 66 to 210. It’s still messy and not worth your time. This poor run of tiny, crummy surf looks set to continue through the following week. There’s a long, blank stretch of nothing happening, with only knee-high slop and constant onshore or cross-shore winds. The swell energy is regularly under 100. It’s a proper flat spell.
Even the offshore winds that show up from the 12th through the 16th don’t help because there’s just no swell to push. We’re looking at 1ft to 3ft of weak, short-period windswell, which is a far cry from the NNW groundswell this reef needs. It’s clean at times, sure, but it’s tiny and weak. There’s no push, no power. The combined energy on the best of those days is still only around 91, which is weak energy.
The only saving grace is this is the Tengan reef, which is inconsistent to begin with. It takes a decent NE swell to get it going, and we just don’t have that on the cards. This is a classic case of a blank run for the area. It doesn’t look like it’s gonna stay poor forever, but within this 16-day window, there’s no standout day, no real recommendation. If you’ve got a kite, maybe you can find some fun in the windy, stormy stuff early on, but for paddle surfing, it’s a big, fat zero. Forecasts can change, but as it stands, you’re better off finding something else to do.
Rusty.
Short Range ForecastHeavy rain (total 197mm), heaviest during Fri afternoon. Warm (max 30°C on Sun morning, min 27°C on Thu night). Winds decreasing (stormy winds from the S on Fri night, strong winds from the SSE by Sun afternoon). | Days 5-7 Weather SummaryHeavy rain (total 41mm), heaviest during Tue morning. Warm (max 30°C on Mon morning, min 28°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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 16 | NNW 10 | NW 11 | ENE 12 | ENE 11 | ENE 10 | E 10 | E 10 | E 10 | E 14 | E 14 | E 13 | E 12 | SW 11 | SW 11 | SSE 3 | ENE 11 | ENE 11 | ENE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 3916 | 6543 | 13533 | 45 | 123 | 115 | 49 | 49 | 30 | 140 | 184 | 171 | 112 | 0 | 0 | 2 | 40 | 39 | 20 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:32PM1.88m | 1:45PM1.54m | 00:42AM1.83m | 3:47PM1.64m | 2:16AM1.84m | 5:01PM1.80m | 3:42AM1.94m | 5:50PM1.94m | 4:48AM2.07m | 6:30PM2.05m | 5:43AM2.19m | 7:07PM2.13m | |||||||
Low Tide | 6:52AM0.68m | 6:30PM1.28m | 8:24AM0.62m | 8:33PM1.36m | 9:48AM0.48m | 10:11PM1.29m | 10:54AM0.32m | 11:13PM1.17m | 11:46AM0.19m | 00:02AM1.03m | 12:32PM0.12m | 00:45AM0.90m | |||||||
 |  | | | | | | | | | | | | | | | | | | |
 | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 7:12 | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — |
mm | 22 | 27 | 63 | 68 | 4 | 4 | 5 | 2 | 2 | 3 | 2 | 2 | 9 | 10 | 5 | 5 | 1 | 4 | 3 |
Temp °C | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 29 | 29 | 28 | 29 | 29 | 29 |
Feels °C | 24 | 21 | 21 | 21 | 21 | 24 | 26 | 29 | 29 | 29 | 31 | 32 | 31 | 32 | 31 | 30 | 31 | 32 | 34 |
Swell 1 Height (m) Direction Period (s) | E 16 | ENE 15 | ENE 12 | WNW 11 | ENE 11 | E 11 | WSW 14 | W 14 | W 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 10 | SW 9 | S 9 | SSW 9 |
| kJ | 3916 | 3609 | 413 | 6435 | 68 | 57 | 10217 | 4733 | 2641 | 1584 | 1524 | 1313 | 923 | 752 | 515 | 318 | 212 | 136 | 255 |
Swell 2 Height (m) Direction Period (s) | — | NNE 11 | E 13 | ENE 12 | ENE 11 | ENE 10 | E 10 | E 10 | SW 11 | W 12 | W 12 | W 11 | W 10 | S 10 | S 10 | S 10 | S 9 | SW 9 | ENE 10 |
| kJ | — | 862 | 633 | 45 | 123 | 115 | 49 | 49 | 930 | 1330 | 687 | 267 | 123 | 206 | 198 | 153 | 109 | 123 | 20 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 16 | E 16 | E 15 | ENE 15 | E 15 | E 10 | E 14 | E 14 | E 13 | E 12 | W 10 | W 9 | W 8 | ENE 11 | ENE 11 | N 9 |
| kJ | — | — | — | 5 | 19 | 17 | 21 | 17 | 30 | 140 | 184 | 171 | 112 | 116 | 99 | 47 | 40 | 39 | 6 |
Wind waves Height (m) Direction Period (s) | N 9 | NNW 10 | NW 11 | SW 10 | SW 12 | SW 13 | S 9 | S 10 | S 10 | SSE 10 | SSE 11 | S 11 | S 10 | SSE 10 | — | SSE 3 | — | — | — |
| kJ | 2182 | 6543 | 13533 | 5125 | 18385 | 18931 | 1291 | 2438 | 1585 | 907 | 541 | 533 | 489 | 320 | — | 2 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 621 | 805 | 773 | 635 | 1096 | 745 | 635 | 631 | 613 | 613 | 613 | 613 | 613 | 647 | 621 | 613 | 613 | 636 | 14 |
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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