Surf Forecasts:
Tengan surf forecast from 12 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 9PM (local time) - 4.5ft (1.3m), 7s period, E swell with 157 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 1.3m 7s and forecast to arrive on Wednesday (Aug 19) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Friday (Aug 14) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9PM (Wed 19th Aug) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's get a look at what's on the table for Tengan over the next couple of weeks.
Straight up, I gotta be honest with you – this stretch is looking pretty grim. The data shows a real dry spell, with no surf worth paddling out for until way down the track. The good news is we’ve got a long window, but the bad news is that window is mostly empty. We’re talking about a gap of nearly two weeks with no recommendations at all, starting from Wednesday the 12th of August. That’s a long, flat, quiet period.
Now, the only glimmer of hope comes in late in the outlook. On Thursday the 27th of August, we finally see something that’s not a complete write-off. The morning and afternoon both show some small, clean energy sliding in from the east at 2ft, with a period of 11 seconds. That’s not a groundswell, but it’s enough to get a longboard out. The wind is glassy, which is a massive plus for that break. The water temp is about 84°F, which is pretty standard for this time of year.
The combined energy is a modest 124 (moderate) for the morning and 118 (moderate) for the afternoon. That’s not going to blow your mind, but it’s something. The conditions are described as "surfable waves but very ordinary." That’s the best we’ve got, and it’s a long way off. Keep an eye on it, but don’t hold your breath. This is a reef break, so that longer period swell might wrap in okay, but it’s likely to be a little straight for a beach break.
For the rest of the run, the swell is tiny – under 2ft – and the wind is often onshore or cross-on, making a mess of things. There’s a storm-force wind forecast for the 24th of August, so that’s a day to stay well clear of the water. The setup here is more interesting for a kite than a paddle during that period.
So, bottom line: there’s a lot of waiting, and a very small window of opportunity right at the end. It’s not a total blank, but it’s close. Forecasts can change, so keep checking back, but as it stands, you’re not missing much.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Wed afternoon. Warm (max 29°C on Thu afternoon, min 25°C on Wed afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sat afternoon. Warm (max 29°C on Sun morning, min 27°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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 11 | N 8 | N 8 | N 7 | N 7 | N 7 | N 6 | SW 8 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ESE 5 | ESE 5 | ESE 5 | ESE 4 | ENE 10 | E 6 | E 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 39 | 34 | 28 | 15 | 8 | 16 | 7 | 0 | 23 | 23 | 20 | 20 | 20 | 24 | 28 | 28 | 21 | 18 | 23 | 50 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | glassy | glassy | cross-off | cross-off | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on |
High Tide | 7:07PM2.13m | 6:32AM2.26m | 7:41PM2.16m | 7:17AM2.27m | 8:11PM2.17m | 7:59AM2.21m | 8:39PM2.15m | 8:41AM2.10m | 9:05PM2.12m | 9:22AM1.96m | 9:29PM2.06m | 10:05AM1.80m | 9:55PM1.99m | |||||||
Low Tide | 00:45AM0.90m | 1:12PM0.12m | 1:25AM0.78m | 1:49PM0.19m | 2:04AM0.69m | 2:22PM0.31m | 2:42AM0.63m | 2:52PM0.48m | 3:19AM0.60m | 3:21PM0.66m | 3:57AM0.62m | 3:48PM0.85m | ||||||||
 |  |  |  |  | | | | | | | | | | | |  | |  | | |
 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — |
mm | 6 | 3 | — | 2 | 2 | 2 | 4 | 1 | 1 | 2 | 2 | 1 | — | 3 | — | — | — | — | 1 | 1 |
Temp °C | 26 | 26 | 28 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 28 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 31 | 30 | 33 | 34 | 33 | 33 | 31 | 32 | 33 | 33 | 31 | 32 | 32 | 29 | 30 | 30 | 28 | 30 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 9 | S 8 | SW 8 | SW 8 | SW 8 | SSW 8 | SSW 8 | SW 8 | SW 8 | SW 8 | SSW 9 | SSW 9 | SSW 8 | SSW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SSW 8 | SSW 9 |
| kJ | 73 | 51 | 54 | 84 | 55 | 103 | 76 | 28 | 43 | 38 | 116 | 96 | 90 | 103 | 79 | 77 | 83 | 83 | 48 | 53 |
Swell 2 Height (m) Direction Period (s) | S 9 | SW 9 | S 9 | S 8 | S 9 | N 7 | W 7 | S 8 | S 8 | S 8 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 10 |
| kJ | 53 | 46 | 53 | 33 | 39 | 16 | 15 | 21 | 32 | 32 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 18 | 17 | 19 |
Swell 3 Height (m) Direction Period (s) | ENE 11 | N 8 | N 8 | N 7 | N 7 | W 8 | N 6 | W 6 | ENE 11 | ENE 11 | E 5 | E 5 | W 7 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 |
| kJ | 39 | 34 | 28 | 15 | 8 | 10 | 7 | 7 | 23 | 23 | 2 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NW 4 | — | — | — | — | — | ESE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 4 | ESE 5 | E 6 | E 6 |
| kJ | — | — | — | — | — | — | 5 | — | — | — | — | — | 9 | 24 | 28 | 28 | 21 | 16 | 23 | 50 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 11 | 12 | 12 | 12 | 12 | 40 | 27 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 |
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)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Tengan surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest