Surf Forecasts:
Tengan surf forecast from 31 Aug 2026:
- Best quality surf: Thursday 3 Sep, 9AM (local time) - 4.5ft (1.4m), 11s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 9PM (local time) - 6.5ft (2.0m), 9s period, E swell with 694 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 9AM (local time) - 4.5ft (1.4m), 11s period with E 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 Thursday (Sep 03) at 9AM. The primary swell is predicted to be 1.4m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tengan in the next 16 days are 2.0m 9s and forecast to arrive on Tuesday (Sep 01) 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 1.7m 11s period and expected on Thursday (Sep 03) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 3rd Sep) | 4.5ft (1.4m) 11s |
| Best Surf | 9AM (Thu 3rd Sep) | 4.5ft (1.4m) 11s |
| Most Powerful | 9PM (Tue 1st Sep) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s on the menu for the next couple of weeks.
Right off the bat, we’re in a bit of a dry spell. Don’t get too excited about the first few days; we’re looking at a solid stretch of onshore wind and messy conditions through the end of August and into the first few days of September. The wait is real, but it looks like things will turn around.
The real action, the one to circle on your calendar, is Thursday the 3rd of September. That morning, Tengan delivers a clean 5ft easterly swell (481 moderate energy) with a nice 11-second period and a light cross-offshore breeze from the northwest. The water is sitting at a warm 83°, which is pretty much bang on average for this time of year. This is the standout window for the whole outlook – it’s the only time the stars align with decent size, clean conditions, and a proper groundswell feel. It’s a reef break, so it’ll handle that long-period energy well.
After that, Friday the 4th drops off significantly. We get a tiny 3ft northerly swell but it’s short period with a cross-offshore wind, so it’s pretty ordinary. The following week gets a bit tricky. There’s a pulse of energy around the 11th and 12th of September, but the winds are howling – 18 to 25 mph cross-offshore. That’s big, wild energy (over 700 and up to 1723), but it’s going to be a battle. The 7ft to 7ft range is for experienced surfers only, and with that much wind, it’s a real mission. Given the reef setup and the strong wind, this might be more of a kite surfer’s playground than a paddle surfer’s dream.
The very end of the outlook, around the 15th of September, shows a glimmer. A 4ft easterly swell with glassy conditions in the morning. It’s not huge, but that glass is a huge positive. It’s a long way out, so keep an eye on it, but it’s the only other chance for a clean session.
Overall, don’t bother paddling out until the 3rd of September. That Thursday morning is your best bet with the light offshore wind and a solid, clean groundswell.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Tue afternoon. Warm (max 29°C on Mon afternoon, min 26°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Fri morning. Warm (max 29°C on Fri morning, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 9 | ESE 8 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 10 | E 11 | E 10 | E 9 | N 7 | N 7 | N 7 | N 9 | N 10 | N 9 | N 9 | N 8 | N 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 220 | 341 | 484 | 614 | 614 | 359 | 342 | 349 | 434 | 237 | 62 | 70 | 48 | 46 | 198 | 262 | 249 | 180 | 140 | 84 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | cross-on | cross-off | off | cross-off | cross-off | cross-off | off | cross-on | cross | cross | cross | cross | cross-on |
High Tide | 8:29PM2.15m | 8:54AM2.02m | 8:56PM2.11m | 9:40AM1.89m | 9:26PM2.04m | 10:34AM1.74m | 10:03PM1.96m | 11:49AM1.60m | 10:53PM1.85m | 1:54PM1.55m | 00:18AM1.76m | 3:51PM1.66m | 2:18AM1.77m | |||||||
Low Tide | 2:47AM0.45m | 2:48PM0.65m | 3:26AM0.45m | 3:21PM0.83m | 4:12AM0.50m | 3:57PM1.02m | 5:10AM0.57m | 4:47PM1.22m | 6:30AM0.64m | 6:21PM1.37m | 8:15AM0.63m | 8:50PM1.36m | ||||||||
 |  | | | | |  |  | | | | | |  |  | | | | | | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — |
mm | 1 | 1 | 2 | 3 | 5 | 2 | — | 3 | 1 | 3 | 1 | 3 | 2 | — | — | — | — | — | — | — |
Temp °C | 29 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 29 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 30 | 28 | 28 | 28 | 27 | 29 | 31 | 29 | 32 | 30 | 31 | 33 | 33 | 33 | 31 | 30 | 30 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | S 9 | SW 9 | SW 10 | SW 9 | SW 10 | SW 10 | SW 10 | ESE 10 | E 11 | SW 11 | E 9 | SSW 10 | SW 10 | S 9 | N 9 | N 10 | N 9 | N 9 | N 8 | N 8 |
| kJ | 39 | 26 | 33 | 40 | 79 | 170 | 265 | 349 | 434 | 338 | 62 | 340 | 184 | 108 | 198 | 262 | 249 | 180 | 140 | 84 |
Swell 2 Height (m) Direction Period (s) | SW 10 | SSW 8 | SSW 8 | SW 9 | S 7 | E 13 | E 12 | SW 10 | SW 11 | E 10 | N 7 | N 7 | S 10 | SW 10 | S 9 | SSW 8 | SSW 8 | SW 8 | SW 8 | E 10 |
| kJ | 33 | 24 | 13 | 22 | 1 | 13 | 11 | 281 | 332 | 237 | 32 | 70 | 122 | 88 | 73 | 111 | 111 | 42 | 51 | 73 |
Swell 3 Height (m) Direction Period (s) | ENE 11 | SW 10 | E 15 | — | — | — | — | — | NNE 6 | N 6 | — | E 10 | N 7 | N 7 | SW 9 | E 10 | E 9 | S 9 | E 11 | S 8 |
| kJ | 12 | 14 | 4 | — | — | — | — | — | 47 | 29 | — | 44 | 48 | 46 | 51 | 16 | 16 | 53 | 88 | 34 |
Wind waves Height (m) Direction Period (s) | E 9 | ESE 8 | E 9 | E 9 | E 9 | E 9 | E 9 | NE 5 | — | SW 3 | SW 11 | — | SSW 9 | — | — | — | — | — | — | — |
| kJ | 220 | 341 | 484 | 614 | 614 | 359 | 342 | 41 | — | 2 | 627 | — | 344 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 840 | 732 | 635 | 621 | 621 | 621 | 12 | 23 | 0 | 0 | 14 | 0 | 11 | 12 | 23 | 23 | 12 | 12 | 12 | 12 |
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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