Surf Forecasts:
Tengan surf forecast from 4 Sep 2026:
- Most powerful swell: Saturday 5 Sep, 9AM (local time) - 7ft (2.2m), 10s period, NW swell with 924 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 10s and forecast to arrive on Saturday (Sep 05) 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 1.7m 9s period and expected on Saturday (Sep 12) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Sat 5th Sep) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
Straight up, it's a tough stretch. The forecast is a long, bleak run with hardly any windows worth paddling out for. The first real chance we get is a bit of a bump, but it comes with a lot of wind. We’re looking at a gap of several days after the first event before things truly flatline, and even that first window is a gamble.
The only spot on the radar is Tengan, a reef break that's inconsistent and best for beginners. Right now, the water is sitting at a warm 84°F, which is bang on average for this time of year, so at least you won't need a thick wetsuit.
The first bit of action kicks off on Friday afternoon, September 4th. There's a 3ft swell from the NNW, but it's short-period stuff at 7 seconds and the wind is a cross-off at 16 mph. It's rideable, but the energy is weak (121). The real standout is early Saturday morning, September 5th. We get a spike of 8ft from the NW with a period of 11 seconds, and the energy jumps to 1259 – that's a serious push. The catch? It's a 19 mph cross-off wind with a risk of thunderstorms. The wave comment calls it "marginal" due to tide, so it's a session for the dedicated, and at that size, it's for stronger paddlers only. The afternoon cleans up a bit with a 4ft N swell (10-second period, 326 energy) and a 16 mph offshore wind, which is a major positive for clean faces. That's the best wave of the whole 16-day block, but it's still not a sure thing.
After that, it's a steep downhill slide. Sunday the 6th through the rest of the period is a mix of poor surf conditions, onshore winds, and tiny swell. The energy drops into the double digits, and by the 10th of September, we're looking at 2ft junk. From the 12th of September onwards, the swell is practically non-existent, with long-period 14-15 second swells that are barely 1ft tall – that's not surfing, that's a groundswell ripple. The wind stays onshore or cross-onshore, making it a write-off for paddle surfing. Honestly, given the consistent wind and small, weak swell, this setup looks more interesting for kite surfing than paddle surfing.
Signing off, Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Sat night. Warm (max 29°C on Sat afternoon, min 27°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Thu afternoon. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | NW 7 | NW 10 | N 10 | E 5 | N 9 | NNE 8 | NNE 7 | N 7 | N 6 | N 8 | NNW 8 | N 9 | N 8 | N 7 | N 7 | N 7 | NNW 6 | NNE 6 | N 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 225 | 924 | 290 | 100 | 113 | 179 | 326 | 243 | 173 | 309 | 277 | 364 | 217 | 124 | 135 | 89 | 41 | 70 | 148 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | on | cross-on | cross-on | cross | cross | cross-off | cross | cross-off | cross-on | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:53PM1.85m | 1:54PM1.55m | 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 | |||||||
Low Tide | 6:30AM0.64m | 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 | |||||||
 |  | | |  | | | | |  | | |  | | | |  | | | |
 | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 6:45 | — | 6:45 | — | — | 6:44 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — |
mm | 5 | 1 | 4 | 5 | — | 1 | 1 | 1 | — | — | — | 1 | 1 | — | — | 1 | 2 | 7 | 7 |
Temp °C | 28 | 28 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 29 | 33 | 28 | 31 | 31 | 27 | 30 | 30 | 28 | 29 | 28 | 27 | 28 | 28 | 30 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 9 | NW 10 | N 10 | WNW 8 | N 9 | SSW 8 | SSW 9 | S 9 | ENE 10 | N 8 | NNW 8 | S 9 | N 8 | S 8 | S 8 | N 7 | NNW 6 | N 8 | N 9 |
| kJ | 103 | 924 | 290 | 151 | 113 | 76 | 61 | 40 | 63 | 309 | 277 | 14 | 217 | 12 | 10 | 89 | 41 | 12 | 148 |
Swell 2 Height (m) Direction Period (s) | S 10 | E 10 | W 6 | SSW 8 | S 8 | E 9 | E 9 | E 8 | S 8 | SSW 9 | S 9 | ENE 10 | S 8 | ENE 8 | ENE 8 | S 8 | SE 9 | ESE 9 | NW 7 |
| kJ | 90 | 16 | 97 | 62 | 37 | 25 | 40 | 22 | 36 | 42 | 24 | 18 | 12 | 7 | 6 | 10 | 13 | 8 | 19 |
Swell 3 Height (m) Direction Period (s) | ESE 9 | ENE 10 | SSW 8 | N 10 | SW 8 | NW 7 | E 13 | ENE 9 | E 11 | NE 11 | NE 10 | SW 8 | ENE 9 | SSW 8 | ESE 10 | ESE 10 | ENE 7 | S 7 | S 8 |
| kJ | 15 | 19 | 111 | 73 | 23 | 12 | 3 | 8 | 3 | 41 | 25 | 10 | 8 | 6 | 9 | 9 | 5 | 4 | 5 |
Wind waves Height (m) Direction Period (s) | NW 7 | SSW 9 | — | E 5 | E 5 | NNE 8 | NNE 7 | N 7 | N 6 | — | — | N 9 | — | N 7 | N 7 | — | NE 3 | NNE 6 | ENE 4 |
| kJ | 225 | 124 | — | 100 | 61 | 179 | 326 | 243 | 173 | — | — | 364 | — | 124 | 135 | — | 2 | 70 | 21 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 14 | 14 | 621 | 11 | 12 | 773 | 768 | 745 | 25 | 27 | 621 | 647 | 647 | 621 | 647 | 647 | 647 | 647 | 647 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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