Surf Forecasts:
Tengan surf forecast from 6 Aug 2026:
- Best quality surf: Friday 7 Aug, 3PM (local time) - 26ft (8.0m), 11s period, NNW swell with offshore winds.
- Most powerful swell: Friday 7 Aug, 3PM (local time) - 26ft (8.0m), 11s period, NNW swell with 16,563 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 3PM (local time) - 26ft (8.0m), 11s period with NNW swell.
Best Forecast Surf Conditions for Tengan this week:
The surf forecast for Tengan over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 07) at 3PM. The primary swell is predicted to be 8.0m and 11s period with a secondary swell of 4.5m and 11s. Another secondary swell of 1.7m and 12s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tengan in the next 16 days are 8.0m 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 10.5m 13s period and expected on Saturday (Aug 08) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 7th Aug) | 26ft (8.0m) 11s |
| Best Surf | 3PM (Fri 7th Aug) | 26ft (8.0m) 11s |
| Most Powerful | 3PM (Fri 7th Aug) | 26ft (8.0m) 11s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, Rusty here, let's have a look at what's in store for Tengan.
First off, Tengan is a reef break that's best for beginners, but it's *inconsistent*, which means it picks and chooses when it wants to work. For the next week and a half, it's pretty much a write-off. The water temperature is sitting at 87°, which is a touch warmer than normal for this time of year.
We've got a real stormy start. Thursday the 6th of August is a no-go, with a messy 8ft to 10ft cross-shore chop and wind howling at 22 to 28 mph. Friday the 7th sees a massive spike in swell energy, with a 23ft swell pushing up to a 33ft monster, but that's accompanied by storm-force winds. That combined wave energy is off the charts, hitting 34,618 on Friday afternoon, but it's way too big and dangerous for anyone but a madman. Then Saturday the 8th brings hurricane-force winds, so you're not going anywhere near the water.
The whole of the following week stays poor. Sunday the 9th through Tuesday the 11th has tiny knee-high swell, only 1ft to 2ft, with cross-shore winds. The energy is weak, barely registering over 100. From Wednesday the 12th all the way to Tuesday the 18th of August, the swell drops out completely for a few days before getting back to some tiny 1.0ft to 2ft slop. The wind does go light offshore on a few days, like Friday the 14th, which is clean, but there's practically no wave to ride.
The only *slight* glimmer comes right at the tail end. On Wednesday the 19th and Thursday the 20th of August, we see a modest bump of 4ft to 4ft swell from the east, with a moderate onshore wind. The combined energy climbs into the moderate range, hitting 469 on Thursday morning. It's still onshore, choppy, and the break is inconsistent anyway, so it's not a standout. It's just something to keep an eye on if you're desperate for a paddle.
In short, for this 16-day window, there's no good surf on offer. The first week is dangerous, the second week is flat, and the long-range bump late in the window is compromised by onshore wind and an inconsistent break. Sometimes it just goes quiet like this around here.
Rusty.
Short Range ForecastHeavy rain (total 424mm), heaviest during Fri night. Warm (max 30°C on Thu morning, min 27°C on Thu night). Winds increasing (fresh winds from the N on Thu morning, extremely windy from the S by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 46mm), heaviest during Sun morning. Warm (max 29°C on Sun morning, min 28°C on Mon night). Winds decreasing (gales from the SSE on Sun morning, moderate winds from the SSW by Tue night). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 16 | E 16 | E 16 | N 11 | NNW 11 | NNW 11 | ENE 11 | E 10 | E 10 | E 10 | E 10 | E 14 | E 13 | E 13 | E 13 | SW 12 | S 10 | SW 10 | SW 10 | SW 9 | SE 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3798 | 4636 | 4347 | 9068 | 16563 | 1216 | 40 | 53 | 49 | 68 | 70 | 97 | 130 | 126 | 115 | 0 | 0 | 0 | 0 | 0 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross | on |
High Tide | 11:55AM1.60m | 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 | 5:13PM1.09m | 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 | ||||||||
 |  |  |  | | | | | |  | | | | | | | | |  | | | |
 | 5:54 | — | — | 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 | — | — | 20 | 18 | 84 | 208 | 38 | 22 | 34 | 8 | 7 | 11 | 4 | 3 | 7 | 2 | 2 | 2 | 1 | 4 | 3 |
Temp °C | 30 | 30 | 29 | 29 | 29 | 29 | 28 | 27 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 29 | 28 |
Feels °C | 30 | 29 | 26 | 22 | 18 | 17 | 17 | 17 | 26 | 24 | 26 | 27 | 28 | 28 | 29 | 30 | 30 | 32 | 34 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | E 16 | E 16 | E 16 | ENE 16 | N 11 | NNW 11 | ENE 11 | E 10 | WSW 14 | WSW 14 | WSW 14 | W 14 | W 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 10 | SW 10 | SW 9 | SW 9 |
| kJ | 3798 | 4636 | 4347 | 4374 | 4752 | 1216 | 40 | 53 | 10853 | 6676 | 5746 | 5087 | 1946 | 1380 | 1524 | 1188 | 752 | 450 | 208 | 141 | 119 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | ENE 12 | NW 15 | — | ENE 15 | E 10 | E 10 | E 10 | E 14 | SW 12 | W 12 | W 10 | S 12 | S 10 | S 10 | S 9 | S 9 | S 9 |
| kJ | — | — | — | — | 820 | 301 | — | 21 | 49 | 68 | 70 | 97 | 1638 | 1095 | 479 | 449 | 302 | 206 | 137 | 137 | 104 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | ENE 16 | — | — | — | ENE 15 | ENE 15 | ENE 15 | — | E 13 | E 13 | E 13 | W 10 | W 9 | W 8 | W 8 | W 7 | W 6 |
| kJ | — | — | — | — | 149 | — | — | — | 43 | 42 | 43 | — | 130 | 126 | 115 | 318 | 196 | 89 | 44 | 26 | 7 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 7 | N 9 | N 11 | NNW 11 | SSW 11 | SSW 13 | SSW 14 | S 11 | S 12 | S 12 | SSW 12 | S 11 | S 12 | S 11 | S 10 | S 10 | — | — | — | SE 3 |
| kJ | 188 | 548 | 2956 | 9068 | 16563 | 19554 | 36577 | 31813 | 4157 | 5607 | 6418 | 4779 | 1673 | 1406 | 866 | 1007 | 834 | — | — | — | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 773 | 805 | 621 | 1333 | 773 | 745 | 745 | 745 | 745 | 745 | 745 | 633 | 613 | 613 | 613 | 613 | 635 | 56 | 11 | 14 | 11 |
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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