Surf Forecasts:
Tengan surf forecast from 8 Aug 2026:
- Most powerful swell: Monday 10 Aug, 6AM (local time) - 2.5ft (0.7m), 14s period, E swell with 198 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 0.7m 14s and forecast to arrive on Monday (Aug 10) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 12s period and expected on Sunday (Aug 09) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Mon 10th Aug) | 2.5ft (0.7m) 14s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, grab your board and paddle out, let’s talk about what’s happening in the water.
Honestly, the next couple of weeks are looking pretty flat and messy for us here. There’s nothing on the table that’s going to get the heart racing, and I’m not seeing any of those days where you clear your schedule. The swell energy is weak across the board, with the combined readings hovering in that low range, barely getting above 100 at its best. It’s a bit of a bummer, but it is what it is.
We’re looking at a long stretch of small, poor-quality surf right up to the end of the window. There’s no real standout period, just a whole lot of nothing happening. The first week is a write-off, with poor surf conditions just about every day. You’ll see some tiny waves, mostly around 1ft to 2ft, but the winds are mostly cross or onshore, making it choppy and hard to enjoy. There’s a short period on Wednesday the 12th where the wind goes light and glassy for the afternoon, but the swell is down to 1ft, so you’d be struggling to catch anything worth the paddle. The energy is weak too, around 38 on that one.
The second week doesn't offer any hope either. The swell stays small, never really pushing past 2ft, and the winds are all over the place. We’ve got easterly and southeasterly winds, often blowing onshore or cross-onshore. Things get a bit windier from the 20th onwards, with gusts picking up to 31 mph and creating blown-out conditions. The swell period does jump up to 15 seconds around the 23rd, but with only 0.7ft on offer, that long period isn't helping us.
Look, if you’re desperate for a splash, the cleanest windows will be when the wind drops, but you’ll be fighting for a dribble. The water temp is about average for this time of year, so that’s not a worry. This is just one of those stretches where the ocean is taking a break. It doesn’t look good for paddle surfing at all. Honestly, with the stronger winds and tiny, poor-quality surf on the beach, it might be more interesting for the kiteboarders than anyone with a surfboard.
I know it’s not what you want to hear, but this is a blank run. We just have to wait for things to change.
Rusty
Short Range ForecastHeavy rain (total 21mm), heaviest during Sun morning. Warm (max 30°C on Tue morning, min 28°C on Sat night). Winds decreasing (gales from the SSE on Sat night, light winds from the SSE by Tue morning). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Wed morning. Warm (max 30°C on Thu morning, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 10 | E 10 | E 9 | E 14 | E 14 | E 13 | SW 11 | E 12 | E 12 | ENE 12 | ENE 11 | ENE 11 | SW 9 | N 8 | SW 8 | ESE 6 | ESE 6 | ESE 6 | E 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 57 | 68 | 64 | 189 | 181 | 171 | 0 | 75 | 103 | 46 | 40 | 38 | 0 | 18 | 0 | 31 | 21 | 13 | 12 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | glassy | cross | cross-off | cross-off | cross | glassy | on | cross-on |
High Tide | 2:16AM1.84m | 5:01PM1.80m | 3:42AM1.94m | 5:50PM1.94m | 4:48AM2.07m | 6:30PM2.05m | 5:43AM2.19m | 7:07PM2.13m | 6:32AM2.26m | 7:41PM2.16m | 7:17AM2.27m | 8:11PM2.17m | |||||||
Low Tide | 9:48AM0.48m | 10:11PM1.29m | 10:54AM0.32m | 11:13PM1.17m | 11:46AM0.19m | 00:02AM1.03m | 12:32PM0.12m | 00:45AM0.90m | 1:12PM0.12m | 1:25AM0.78m | 1:49PM0.19m | 2:04AM0.69m | |||||||
 |  | | | | | |  |  |  | | | | | | | | | | |
 | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 7:10 | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — |
mm | 3 | 5 | 4 | 4 | 3 | 1 | 1 | — | — | — | 1 | 1 | 2 | 2 | 1 | 1 | — | 1 | 5 |
Temp °C | 29 | 28 | 28 | 28 | 29 | 29 | 29 | 30 | 30 | 28 | 28 | 28 | 28 | 30 | 30 | 28 | 29 | 30 | 27 |
Feels °C | 24 | 27 | 27 | 28 | 31 | 31 | 32 | 33 | 33 | 32 | 32 | 33 | 33 | 34 | 33 | 32 | 34 | 34 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 12 | WSW 12 | WSW 12 | W 11 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | S 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 9 | SSW 8 | SSW 9 | SSW 9 |
| kJ | 2143 | 2502 | 1903 | 599 | 875 | 676 | 475 | 350 | 256 | 175 | 147 | 138 | 97 | 126 | 86 | 74 | 113 | 116 | 116 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | E 10 | SW 10 | E 14 | W 10 | W 10 | S 10 | S 10 | S 10 | SW 10 | S 9 | S 9 | S 9 | S 9 | S 8 | S 10 | W 8 | W 7 | E 6 |
| kJ | 57 | 68 | 148 | 189 | 338 | 196 | 345 | 257 | 237 | 192 | 106 | 78 | 76 | 58 | 34 | 67 | 31 | 23 | 12 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 15 | E 9 | E 14 | E 14 | E 13 | W 9 | E 12 | E 12 | ENE 12 | ENE 11 | ENE 11 | W 7 | N 8 | W 8 | W 7 | ESE 6 | ESE 6 | W 8 |
| kJ | 4 | 17 | 64 | 136 | 181 | 171 | 85 | 75 | 103 | 46 | 40 | 38 | 8 | 18 | 18 | 16 | 21 | 13 | 18 |
Wind waves Height (m) Direction Period (s) | S 11 | S 9 | S 9 | S 10 | S 10 | S 10 | — | — | — | — | — | — | — | — | — | ESE 6 | — | — | — |
| kJ | 4093 | 924 | 921 | 1515 | 495 | 360 | — | — | — | — | — | — | — | — | — | 31 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 635 | 631 | 613 | 613 | 52 | 10 | 10 | 10 | 10 | 13 | 11 | 12 | 12 | 27 | 27 | 12 | 12 | 12 | 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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