
Surf Forecasts:
Tengan surf forecast from 5 Sep 2026:
- Most powerful swell: Tuesday 8 Sep, 6AM (local time) - 6ft (1.8m), 9s period, NNW swell with 505 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 1.8m 9s and forecast to arrive on Tuesday (Sep 08) 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 1.5m 8s period and expected on Saturday (Sep 05) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Tue 8th Sep) | 6ft (1.8m) 9s |
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 on the table.
Honestly, mate, it’s a pretty bleak outlook for Tengan (reef) over the next 16 days. We’re looking at a long stretch of frustrating conditions. The guidance shows the spot is inconsistent and it’s a beginner-friendly reef, but the forecast just isn't delivering for us.
The first solid swell we see builds on September 5th, but straight away it's a problem. The wind is up from the southwest at 12 mph on Saturday afternoon, making it a messy cross-offshore breeze. With waves around 4ft from the north at a period of 10 seconds, it’s small and lumpy, and the combined energy is only 265 – weak, unfocused power. You’d be fighting the chop for tiny, gutless waves.
Sunday the 6th and Monday the 7th see a slight bump in size, but the wind stays nasty, mostly cross-on or cross-off at 15 to 19 mph, creating a lumpy, blown-out mess. Swell sizes hit 6ft from the northeast on Sunday, but with that fresh breeze, it’s all texture and no clean face. The combined energy climbs to 465 on Sunday morning (moderate), but the wind kills any chance of a decent wave. The water’s warm at 84°, but that’s a small comfort when the surface is a washing machine.
We then go into a serious drought. From Tuesday the 8th right through to the end of the forecast window on the 20th, every single session is rated as ‘poor surf conditions.’ The swell drops off a cliff. After the 8th, wave heights barely get above 3ft for the rest of the period, often sitting at 1ft to 3ft. The combined energy numbers tell the story: mostly two-digit values (35, 41, 55, 70) – that’s weak, barely-any-swell territory. Winds stay onshore or cross-onshore from the east or southeast, sometimes with thunderstorms, keeping things choppy and messy.
There really isn’t a single standout session in the whole 16-day window. The period is dominated by weak energy, small wave heights, and poor wind alignment. For a reef that breaks inconsistently at the best of times, this stretch is a write-off. A break like this, with no consistency, it’s common to see these long flat spells.
If you’re desperate, keep an eye on the morning of the 11th (Friday), when the wind turns easterly and onshore but the swell is a clean 4ft from the north with a 9-second period (combined energy 307). But even then, ‘poor surf conditions’ is the official call, so don’t hold your breath.
Forget the paddle board; any decent wind energy here looks more kite-friendly than surfable. I’m calling it: nothing worth a paddle.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sat afternoon. Warm (max 29°C on Sun morning, min 27°C on Sat night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Thu morning. Warm (max 29°C on Thu afternoon, min 26°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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) | N 10 | ENE 7 | NE 9 | NNE 8 | N 7 | N 8 | NNW 8 | N 9 | NNW 9 | NNW 9 | N 8 | N 7 | N 7 | N 7 | N 7 | N 9 | N 10 | N 9 | N 9 | N 8 |
Wave Graph | ||||||||||||||||||||
244 | 115 | 461 | 361 | 483 | 279 | 326 | 334 | 493 | 505 | 280 | 272 | 203 | 92 | 94 | 380 | 417 | 288 | 224 | 113 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-on | on | on | on | cross-on | on |
High Tide | 00:18AM1.76m | 3:51PM1.66m | 2:18AM1.77m | 4:48PM1.81m | 3:47AM1.90m | 5:29PM1.94m | 4:49AM2.05m | 6:03PM2.05m | 5:39AM2.17m | 6:33PM2.13m | 6:23AM2.23m | 7:00PM2.17m | ||||||||
Low Tide | 6:21PM1.37m | 8:15AM0.63m | 8:50PM1.36m | 9:42AM0.52m | 10:14PM1.22m | 10:43AM0.40m | 11:06PM1.03m | 11:31AM0.30m | 11:48PM0.85m | 12:11PM0.26m | 00:26AM0.68m | 12:46PM0.28m | 1:02AM0.54m | |||||||
— | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:45 | — | — | 6:44 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | |
mm | 13 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | 1 | 2 | 2 |
Temp °C | 28 | 28 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 28 | 28 | 28 | 27 |
Feels °C | 32 | 33 | 30 | 30 | 27 | 29 | 29 | 29 | 28 | 28 | 27 | 26 | 27 | 28 | 31 | 31 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | N 10 | WNW 7 | SSW 8 | SSW 9 | E 9 | NE 8 | NE 10 | WNW 6 | SW 8 | SW 8 | S 8 | S 8 | E 9 | NW 6 | N 7 | N 9 | N 10 | N 9 | N 9 | N 8 |
244 | 172 | 62 | 58 | 39 | 28 | 35 | 26 | 10 | 10 | 5 | 5 | 15 | 15 | 94 | 380 | 417 | 288 | 224 | 113 | |
Swell 2 Height (m) Direction Period (s) | E 10 | SSW 8 | NW 7 | E 9 | SSW 9 | S 9 | SSW 8 | NE 10 | S 9 | S 8 | SW 9 | E 9 | S 8 | S 7 | NW 8 | ESE 9 | E 9 | ESE 9 | E 8 | ESE 8 |
17 | 80 | 14 | 25 | 26 | 25 | 24 | 15 | 13 | 6 | 3 | 6 | 5 | 4 | 11 | 16 | 14 | 16 | 12 | 14 | |
Swell 3 Height (m) Direction Period (s) | E 15 | N 11 | E 14 | — | E 13 | E 8 | E 9 | SW 8 | ENE 10 | E 9 | NE 9 | SW 8 | SW 8 | E 9 | ENE 8 | S 7 | S 8 | S 8 | E 15 | E 15 |
4 | 81 | 4 | — | 3 | 12 | 6 | 18 | 9 | 7 | 3 | 3 | 3 | 6 | 7 | 4 | 6 | 5 | 17 | 19 | |
Wind waves Height (m) Direction Period (s) | W 8 | ENE 7 | NE 9 | NNE 8 | N 7 | N 8 | NNW 8 | N 9 | NNW 9 | NNW 9 | N 8 | N 7 | N 7 | N 7 | NE 7 | E 8 | E 9 | ESE 4 | ESE 4 | E 5 |
458 | 115 | 461 | 361 | 483 | 279 | 326 | 334 | 493 | 505 | 280 | 272 | 203 | 92 | 22 | 35 | 39 | 3 | 5 | 15 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 24 | 745 | 773 | 745 | 742 | 647 | 27 | 37 | 647 | 772 | 621 | 647 | 647 | 972 | 23 | 12 | 12 | 12 | 10 | 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.










