Surf Forecasts:
Tengan surf forecast from 1 Sep 2026:
- Best quality surf: Thursday 3 Sep, 3PM (local time) - 3.5ft (1.1m), 10s period, E swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 9PM (local time) - 7ft (2.2m), 9s period, E swell with 854 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 3PM (local time) - 3.5ft (1.1m), 10s 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 3PM. The primary swell is predicted to be 1.1m and 10s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tengan in the next 16 days are 2.2m 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 1.5m 9s period and expected on Friday (Sep 04) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Thu 3rd Sep) | 3.5ft (1.1m) 10s |
| Best Surf | 3PM (Thu 3rd Sep) | 3.5ft (1.1m) 10s |
| Most Powerful | 9PM (Tue 1st Sep) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, let’s get into it. It’s Rusty here. Not gonna lie, we’re in for a bit of a dry spell to kick things off.
Right off the bat, for the first few days, Tengan is getting absolutely hammered by onshore winds and messy conditions through the 1st and 2nd of September. The swell is there, around 6 ft to 7 ft from the east, but with that wind it’s just blown out and ugly. The combined energy is moderate to moderate-strong (485 to 675), but it’s all for nothing with the wind.
We finally get a window on the afternoon of Thursday, 3rd September. The wind swings offshore from the WNW at 15 km/h, and the swell drops to a clean 4 ft from the east with a period of 10 seconds. Combined energy reading is 288 (weak to moderate), so it’s not a big day, but it’s clean. That’s the first real chance for a wave.
Friday morning the 4th is cross-off with a tiny 4 ft from the north, but the real gem looks like Friday afternoon. Wind goes light offshore from the west at 10 km/h on a dropping 3 ft NNE swell. Glassy conditions are possible early Saturday the 5th, with a 4 ft north swell and that ENE wind going glassy. The combined energy that morning is 253 (weak to moderate). Not epic, but for consistency, that might be the best window early on.
After that, it all falls apart. From the 6th through to the 10th of September we get a long stretch of strong cross-onshore or messy winds, and the swell either drops or gets too short period. The 9th shows a 12-second easterly swell (groundswell) at 3 ft, but the wind is a fresh cross-onshore 30 km/h—completely unsurfable. There are a few clean-looking cross-off windows on the 10th, 11th, and 12th of September, but the wind is howling at 35 to 40 km/h. The wave faces will be clean, but you’ll be paddling into a strong breeze. Not recommended unless you’re tough. The 12th afternoon turns choppy again.
Then from the 13th into the 14th, onshore winds and cross-onshore chop ruin things again. Even a 5 ft ENE swell on the 14th afternoon doesn’t save you.
The real standout, and I mean the one that grabs you by the collar, is that last record: Tengan on the afternoon of 16th September. This is a massive pulse. We’re looking at a 23 ft north swell, with a 10-second period. The combined energy is a monstrous 19,158 (very strong). Wind is cross-shore at 20 km/h, but at that size, it doesn’t matter as much—this is solid expert territory. Anything over 8 ft is for experts, so 23 ft is huge. It’s a reef break, so it will handle the size, but the period is moderate at 10 seconds. This is a big, powerful, critical wave. The score for that afternoon is high, and it’s the only real jaw-dropper in the whole 16-day window.
Earlier that morning on the 16th, there’s a 15 ft swell (combined energy 2,558 – strong), also cross-shore and challenging.
Water temp is about average at 83°F with a tiny anomaly, so nothing unusual there.
So, to sum it up: it’s a slow start with a few clean but small windows around the 3rd and 4th/5th of September. After a long gap of poor conditions, the real payoff is the 16th of September, where Tengan turns into a big-wave beast. That’s the one to circle on the calendar.
Stay patient.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu afternoon. Warm (max 29°C on Wed afternoon, min 26°C on Wed night). Winds decreasing (fresh winds from the E on Tue night, light winds from the W by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 37mm), heaviest during Sun morning. Warm (max 29°C on Sat morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 11 | E 10 | N 7 | N 8 | NNE 8 | NNE 7 | N 9 | N 10 | N 10 | N 9 | N 9 | N 8 | N 8 | N 7 | N 9 |
Wave Graph | |||||||||||||||||||||
580 | 670 | 721 | 473 | 326 | 541 | 432 | 237 | 107 | 138 | 75 | 40 | 241 | 327 | 260 | 160 | 96 | 66 | 40 | 27 | 41 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross | cross-off | off | off | cross-off | off | cross-off | glassy | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on |
High Tide | 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 | 4:48PM1.81m | |||||||||
Low Tide | 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 | 9:42AM0.52m | 10:14PM1.22m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:42 | — | |
mm | 1 | 2 | 3 | — | — | 1 | 3 | 9 | 2 | 3 | 2 | 4 | 2 | 6 | 9 | 9 | 2 | — | — | 1 | 1 |
Temp °C | 28 | 28 | 27 | 28 | 29 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 27 | 27 | 27 | 29 | 29 | 27 |
Feels °C | 28 | 28 | 26 | 28 | 29 | 27 | 30 | 30 | 31 | 33 | 33 | 32 | 33 | 33 | 28 | 28 | 28 | 30 | 33 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 10 | SW 9 | SW 10 | SW 10 | SW 10 | E 10 | E 11 | SW 12 | SW 12 | SW 11 | SW 10 | SW 9 | N 9 | N 10 | N 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 9 |
33 | 30 | 61 | 120 | 170 | 541 | 432 | 303 | 433 | 328 | 160 | 144 | 241 | 327 | 260 | 151 | 137 | 144 | 188 | 137 | 73 | |
Swell 2 Height (m) Direction Period (s) | SSW 8 | S 8 | S 7 | E 13 | E 12 | SW 10 | SW 10 | E 10 | N 7 | N 8 | NNE 8 | S 10 | SSW 9 | SSW 9 | SSW 9 | N 9 | N 9 | N 8 | N 8 | N 7 | N 9 |
13 | 5 | 1 | 12 | 12 | 192 | 244 | 237 | 107 | 138 | 75 | 117 | 199 | 207 | 157 | 160 | 96 | 66 | 40 | 27 | 41 | |
Swell 3 Height (m) Direction Period (s) | E 15 | E 15 | E 14 | — | — | — | S 8 | N 6 | E 9 | E 9 | S 10 | NNE 7 | ESE 8 | E 10 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | NW 6 |
4 | 5 | 15 | — | — | — | 5 | 51 | 85 | 42 | 125 | 40 | 12 | 16 | 15 | 15 | 14 | 14 | 12 | 12 | 5 | |
Wind waves Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | NE 5 | NNE 6 | W 3 | — | — | SSW 9 | — | — | SW 8 | — | SSE 8 | SSE 8 | ESE 3 | ESE 4 | E 3 | NE 4 |
580 | 670 | 721 | 473 | 326 | 40 | 60 | 4 | — | — | 360 | — | — | 138 | — | 53 | 67 | 6 | 10 | 6 | 14 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 745 | 621 | 621 | 613 | 12 | 37 | 11 | 0 | 0 | 0 | 11 | 14 | 0 | 10 | 12 | 13 | 768 | 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.











