
Surf Forecasts:
Tengan surf forecast from 9 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 3PM (local time) - 5ft (1.5m), 9s period, N swell with 388 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 1.5m 9s and forecast to arrive on Thursday (Sep 10) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 6s period and expected on Saturday (Sep 12) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Thu 10th Sep) | 5ft (1.5m) 9s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about what’s cookin' for the Tengan area.
Water temp is 83°F, which is just about average for this time of year. No surprises there.
Honestly, it’s a slow start. We’ve got a tiny pulse on Thursday the 10th, with waves around 5 feet from the north, but the wind is a light cross-shore, and it’s only rated as marginal. The energy is weak. After that? It’s basically a dead zone. From Friday the 11th all the way through the 18th, it’s small, choppy, and blown out, with swell dropping below 3 feet and onshore winds ruining any chance of a clean wave. That’s a solid 9-day stretch where you’re better off doing something else. It’s a tough run.
Now, if you’ve got some grit and a big board, there’s one serious pulse of energy way out there. On Saturday the 19th of September, the wave energy jumps through the roof—over 1800 in the morning, up to 2700 by the afternoon. That’s a proper groundswell from the ESE with a 19-second period. That’s a long period, so it’ll have some serious push, but it might be a bit straight for the beach breaks—if Tengan is a reef, that’s where it’ll shine. Swell hits about 5 feet in the morning, pushing to 6 feet in the afternoon. But, the wind is a moderate cross-onshore from the NE, making it lumpy and choppy. It’s a tease—a big swell with messy wind.
Sunday the 20th is even bigger, with waves up to 8 feet and energy near 4400, but again, it’s a fresh cross-onshore wind. That’s expert-only size, and the conditions will be a fight.
So, here’s the deal. If you don’t mind a choppy, lumpy session on a reef, the 19th and 20th are the only days with any real size and period. For clean, glassy waves? There are none in this outlook. We get offshore winds around the 22nd-25th, but the swell is practically flat at under 1 foot. That’s a kiteboarder’s window, not a surfer’s.
Sorry, gang. This is a waiting game. Keep your eye on the 19th, but don’t hold your breath for perfection.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Fri afternoon. Warm (max 29°C on Fri afternoon, min 27°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Mon morning. Warm (max 29°C on Tue afternoon, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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 | N 9 | N 9 | N 8 | NNW 8 | N 8 | N 7 | N 7 | E 14 | E 6 | E 6 | E 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | E 9 | E 9 | E 9 |
Wave Graph | |||||||||||||||||||||
306 | 388 | 275 | 147 | 109 | 55 | 38 | 36 | 36 | 43 | 52 | 95 | 94 | 106 | 108 | 141 | 113 | 123 | 62 | 61 | 42 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | on | cross-on | on | on | on | cross-on | on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on |
High Tide | 6:33PM2.13m | 6:23AM2.23m | 7:00PM2.17m | 7:04AM2.23m | 7:26PM2.19m | 7:42AM2.18m | 7:49PM2.18m | 8:20AM2.09m | 8:12PM2.15m | 8:57AM1.96m | 8:35PM2.09m | 9:35AM1.82m | 9:00PM2.00m | ||||||||
Low Tide | 12:11PM0.26m | 00:26AM0.68m | 12:46PM0.28m | 1:02AM0.54m | 1:17PM0.36m | 1:35AM0.44m | 1:46PM0.47m | 2:08AM0.39m | 2:13PM0.61m | 2:40AM0.38m | 2:40PM0.76m | 3:13AM0.43m | 3:06PM0.91m | ||||||||
6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:31 | — | |
mm | — | — | 1 | — | 3 | 3 | — | — | — | 1 | 1 | 1 | 4 | 3 | 2 | 1 | 2 | 3 | 2 | — | — |
Temp °C | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 28 | 27 |
Feels °C | 32 | 32 | 33 | 32 | 32 | 32 | 30 | 31 | 30 | 30 | 30 | 29 | 29 | 29 | 30 | 31 | 33 | 31 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | N 9 | N 9 | N 9 | N 8 | NNW 8 | N 8 | N 7 | N 7 | N 6 | N 6 | N 6 | N 5 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | E 9 | E 9 | E 9 |
306 | 388 | 275 | 147 | 109 | 55 | 38 | 35 | 20 | 12 | 16 | 9 | 94 | 106 | 108 | 141 | 113 | 123 | 62 | 61 | 42 | |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 9 | ESE 9 | E 15 | ESE 8 | WNW 6 | E 14 | E 14 | S 7 | E 14 | E 14 | E 13 | E 13 | N 5 | SW 9 | SW 9 | SW 8 | NNW 7 | NNW 6 | NNW 6 | NNW 7 |
17 | 20 | 16 | 17 | 23 | 4 | 35 | 36 | 9 | 35 | 36 | 32 | 31 | 4 | 12 | 12 | 11 | 30 | 14 | 8 | 9 | |
Swell 3 Height (m) Direction Period (s) | S 7 | SW 8 | S 7 | S 7 | E 15 | E 15 | WNW 6 | S 8 | E 14 | S 7 | S 7 | S 6 | N 5 | E 13 | E 13 | N 4 | E 15 | SW 9 | ENE 14 | ENE 14 | ENE 14 |
4 | 3 | 4 | 4 | 17 | 41 | 3 | 5 | 36 | 4 | 4 | 3 | 5 | 14 | 14 | 1 | 19 | 12 | 40 | 37 | 40 | |
Wind waves Height (m) Direction Period (s) | — | — | ESE 6 | ESE 8 | SE 7 | ESE 6 | ESE 6 | ESE 6 | E 4 | E 6 | E 6 | E 8 | ENE 4 | ENE 3 | SE 3 | — | — | SE 6 | SE 6 | SSE 6 | ESE 3 |
— | — | 24 | 28 | 51 | 26 | 32 | 25 | 9 | 43 | 52 | 95 | 7 | 4 | 3 | — | — | 46 | 21 | 12 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 11 | 10 | 10 | 10 | 10 | 14 | 13 | 13 | 13 | 12 | 12 | 621 | 23 | 621 | 28 | 28 | 23 | 10 | 10 | 10 |
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.










