Surf Forecasts:
Tengan surf forecast from 6 Sep 2026:
- Most powerful swell: Monday 7 Sep, 9AM (local time) - 7ft (2.2m), 9s period, N swell with 732 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 2.2m 9s and forecast to arrive on Monday (Sep 07) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 11s period and expected on Sunday (Sep 13) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Mon 7th Sep) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, let’s get real about Tengan. This is a reef setup that’s fairly exposed to swell, and it likes it from the NE. The water temp is sitting at 84°F, which is about bang on average for this time of year, so nothing weird going on there.
To be straight with you, the next two weeks are mostly a bust. We’ve got a long dry spell on our hands. From now – that’s Monday, September 7th – right through to the end of the second week, the surf quality is rated as poor. The swell is there, but the wind is the problem. It’s coming from the N, NNW, and then swinging around to the E and ESE, mostly cross-off or cross-on, and it’s fresh to moderate. It’s just messy.
There is one tiny glimmer way out there. On Monday the 22nd of September, we finally see something cook. The swell bumps up to 5ft to 5ft from the E, and here’s the kicker – the period hits 19 to 20 seconds. That’s proper groundswell, very long period. The combined energy is strong, reading 1566 to 1626. The wind is light from the NE and NNE, giving us a light cross-on breeze with small ripples. That’s about as clean as it gets for Tengan. But it’s still labelled as marginal, and the swell is a bit north of the optimum NE direction. Still, for a break that’s usually inconsistent, this late window has potential. Just keep in mind it’s over two weeks away, so that’s a long-range promise, not a guarantee.
Apart from that one shot on the 22nd, we’re looking at a whole lot of nothing. There’s no standout day before that. All the scores are bottom of the barrel. The wind is either onshore or cross-onshore, and the swell is weak or poorly aligned. It’s a frustrating run for sure.
If you’re desperate, the only thing worth your time in the whole 16-day window is that Monday, September 22nd. Swell around 5ft to 5ft from the E, with that beautiful long period making it feel much bigger. The light wind will keep it clean. Just be warned – it’s a reef and it’s inconsistent, so don’t expect it to be pumping every set. Still, it’s the one to watch.
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 SummaryModerate rain (total 10mm), heaviest on Thu afternoon. Warm (max 28°C on Thu morning, min 26°C on Sat night). 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 | NNW 9 | NNW 8 | NNW 9 | N 8 | N 8 | N 8 | N 7 | N 7 | N 9 | N 9 | N 9 | N 8 | ESE 7 | ESE 7 | SE 7 | SE 9 | E 14 | E 7 | E 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 732 | 448 | 530 | 510 | 542 | 337 | 217 | 217 | 126 | 127 | 251 | 230 | 154 | 86 | 61 | 85 | 48 | 118 | 35 | 77 | 106 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | on | on | cross-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 | — | — | — | — | — | — | — | — | — | — | 4 | 3 | 2 | 1 | — | — | — | — | 1 | — | 3 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 29 | 31 | 31 | 32 | 31 | 31 | 30 | 30 | 29 | 29 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | E 8 | SSW 8 | NE 10 | S 8 | ENE 8 | S 8 | S 8 | S 8 | S 7 | N 7 | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | SE 7 | SE 9 | S 10 | S 11 | S 9 |
| kJ | 12 | 14 | 14 | 5 | 7 | 5 | 5 | 4 | 4 | 127 | 251 | 230 | 154 | 86 | 44 | 42 | 48 | 118 | 74 | 57 | 41 |
Swell 2 Height (m) Direction Period (s) | S 9 | E 8 | E 8 | SW 8 | S 8 | SW 9 | SW 8 | ESE 10 | SE 10 | E 8 | E 9 | SSE 9 | E 15 | ESE 7 | NW 6 | E 14 | N 7 | N 7 | N 7 | N 6 | N 6 |
| kJ | 14 | 12 | 10 | 10 | 5 | 3 | 3 | 10 | 4 | 6 | 16 | 8 | 17 | 42 | 9 | 35 | 25 | 25 | 14 | 12 | 6 |
Swell 3 Height (m) Direction Period (s) | SW 8 | N 11 | SSW 8 | ENE 9 | SSW 8 | NE 8 | ESE 10 | SW 8 | SW 8 | SW 8 | SW 8 | E 16 | SE 9 | E 15 | E 15 | WNW 5 | SSE 11 | E 14 | E 14 | E 14 | E 13 |
| kJ | 2 | 37 | 6 | 8 | 6 | 3 | 10 | 3 | 3 | 3 | 3 | 5 | 3 | 17 | 19 | 3 | 24 | 36 | 35 | 36 | 32 |
Wind waves Height (m) Direction Period (s) | N 9 | NNW 8 | NNW 9 | NNW 8 | NNW 9 | N 8 | N 8 | N 8 | N 7 | NE 4 | — | ESE 9 | ESE 8 | S 5 | ESE 7 | ESE 7 | E 4 | ENE 4 | E 4 | E 7 | E 7 |
| kJ | 732 | 448 | 530 | 510 | 542 | 337 | 217 | 217 | 126 | 3 | — | 47 | 45 | 4 | 61 | 85 | 9 | 17 | 35 | 77 | 106 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 647 | 647 | 621 | 647 | 647 | 621 | 648 | 972 | 13 | 12 | 12 | 12 | 10 | 10 | 14 | 12 | 12 | 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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