Surf Forecasts:
Tengan surf forecast from 7 Sep 2026:
- Most powerful swell: Tuesday 8 Sep, 6PM (local time) - 6ft (1.9m), 9s period, NNW swell with 547 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 1.9m 9s and forecast to arrive on Tuesday (Sep 08) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 10s period and expected on Saturday (Sep 12) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6PM (Tue 8th Sep) | 6ft (1.9m) 9s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Right, folks, Rusty here. Let's have a good look at what's cookin' for the next couple of weeks. Straight up, this is a tough one. We’re lookin’ at Tengan (Japan), a beginner-friendly reef break that’s inconsistent and only works with swell from the NE. We've got a long, dry spell ahead, so don't get your hopes up for any decent paddle-out sessions for a while.
For the first week, honestly, it’s a write-off. Through to the 16th of September, the swell is mostly from the N and NNW, which isn't the magic direction for this spot. On top of that, we’ve got howlin’ cross-shore winds up to 19 mph turning the ocean into a lumpy mess. The surf quality is just poor, with very weak combined wave energy (695) dropping away quickly. There’s a brief window on the 16th of September afternoon where the wind swings light cross-off from the SSW and the waves clean up a touch, with a combined energy of 109, but the swell is a tiny 2 ft from the east. It’s surfable but barely worth the effort.
We then hit a real gap. From the morning of the 17th of September through the 22nd of September, it’s flat with next to no energy. The swell heights hover around 2 ft or less, and the combined energy drops into the double-digits (82, 41, 15). You'd be better off taking the dog for a walk.
The only half-decent glimmer comes right at the very end, on Sunday the 20th of September. In the morning and afternoon, the wind goes completely glassy, which is rare and a major positive. We get a little pulse of NW swell around 2 ft to 3 ft with a period of 8 seconds. The combined energy nudges up to 110 on the Sunday afternoon and the conditions are glassy. For a spot that’s been hammered by onshores, this is the closest thing to a standout, but even then, the waves are tiny. It's promising but less certain this far out.
So, what are we left with? The 20th of September is your only real chance to get wet for clean lines, but you’ll be on a longboard, not a thruster. The water temp is a balmy 84°, right on the money for the time of year, but that’s small comfort when you’re bobbing around on a knee-high wave.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Mon morning, min 26°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Warm (max 28°C on Thu morning, min 27°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | N 9 | NNW 8 | N 9 | NNW 9 | NNW 9 | N 8 | N 7 | N 7 | N 7 | N 9 | N 9 | N 9 | N 9 | N 8 | ESE 7 | ESE 7 | E 14 | E 5 | E 5 | E 7 | E 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 683 | 460 | 343 | 518 | 516 | 294 | 243 | 178 | 103 | 225 | 325 | 225 | 154 | 111 | 86 | 124 | 36 | 44 | 52 | 92 | 100 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on |
High Tide | 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 | 7:04AM2.23m | 7:26PM2.19m | 7:42AM2.18m | 7:49PM2.18m | ||||||||
Low Tide | 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 | 1:17PM0.36m | 1:35AM0.44m | 1:46PM0.47m | 2:08AM0.39m | |||||||
 | |  | | |  |  | | |  |  |  | | | | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 5 | 1 | 1 | 1 | — | — | — | — | — | — | 1 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 29 | 31 | 32 | 31 | 31 | 31 | 29 | 29 | 29 | 28 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | E 8 | SSW 8 | N 9 | SW 8 | ENE 9 | S 8 | S 8 | S 8 | N 7 | N 9 | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | SSE 10 | SE 9 | SSE 9 | S 9 | S 8 |
| kJ | 12 | 14 | 343 | 10 | 7 | 5 | 5 | 4 | 103 | 225 | 325 | 225 | 154 | 111 | 60 | 41 | 200 | 79 | 62 | 39 | 21 |
Swell 2 Height (m) Direction Period (s) | S 9 | E 8 | WNW 6 | NE 9 | S 8 | SW 9 | SW 8 | ESE 10 | SE 10 | ESE 9 | SE 9 | SE 9 | ESE 9 | ESE 9 | E 15 | SSE 11 | N 7 | N 7 | N 6 | N 6 | N 6 |
| kJ | 14 | 12 | 49 | 12 | 5 | 3 | 3 | 10 | 4 | 17 | 13 | 20 | 15 | 15 | 19 | 24 | 25 | 24 | 12 | 12 | 6 |
Swell 3 Height (m) Direction Period (s) | SW 8 | NE 10 | NE 10 | E 9 | SSW 8 | NE 8 | SE 10 | SW 8 | S 7 | S 7 | E 9 | E 16 | E 15 | E 15 | WNW 6 | E 14 | E 14 | SSE 10 | E 14 | E 14 | E 13 |
| kJ | 2 | 33 | 14 | 6 | 6 | 3 | 4 | 3 | 4 | 4 | 6 | 5 | 17 | 17 | 3 | 35 | 36 | 37 | 35 | 36 | 32 |
Wind waves Height (m) Direction Period (s) | N 9 | NNW 8 | N 9 | NNW 9 | NNW 9 | N 8 | N 7 | N 7 | ENE 4 | — | — | — | ESE 6 | SE 6 | ESE 7 | ESE 7 | E 4 | E 5 | E 5 | E 7 | E 7 |
| kJ | 683 | 460 | 184 | 518 | 516 | 294 | 243 | 178 | 2 | — | — | — | 20 | 34 | 86 | 124 | 21 | 44 | 52 | 92 | 100 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 647 | 772 | 37 | 647 | 647 | 621 | 648 | 757 | 647 | 13 | 12 | 10 | 10 | 10 | 14 | 13 | 12 | 12 | 12 | 12 | 633 |
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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