Surf Forecasts:
Tengan surf forecast from 31 Aug 2026:
- Best quality surf: Thursday 3 Sep, 12PM (local time) - 4ft (1.2m), 10s period, E swell with offshore winds.
- Most powerful swell: Wednesday 2 Sep, 12AM (local time) - 7ft (2.1m), 9s period, E swell with 775 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 12PM (local time) - 4ft (1.2m), 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 12PM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.6m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tengan in the next 16 days are 2.1m 9s and forecast to arrive on Wednesday (Sep 02) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 11s period and expected on Friday (Sep 04) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 3rd Sep) | 4ft (1.2m) 10s |
| Best Surf | 12PM (Thu 3rd Sep) | 4ft (1.2m) 10s |
| Most Powerful | 12AM (Wed 2nd Sep) | 7ft (2.1m) 9s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s on offer at Tengan. This is a reef setup, and it’s an inconsistent little number that’s fairly exposed to the swell, with an optimum from the NE. The water temp is about average for this time of year, so nothing unusual to report there.
The truth is, the next week and a half is looking pretty grim. We’ve got a long gap of dud surf ahead. For the first several days, the waves are either onshore, messy, or just plain weak. The first real flicker of hope doesn’t show up until Thursday, September 3rd. That afternoon, we get a 4ft swell from the E with a 10-second period, and the wind swings offshore from the W, cleaning things up. The combined energy is moderate (292), and it’s a marginal call, but it’s the best we’ve seen. Still, don’t expect much.
The next notable moment is Saturday, September 12th. The afternoon brings a 10ft swell from the NNW, period around 9 seconds. That’s a big lump of water, and the combined energy shoots up to 1481—strong. The wind is cross-offshore, so it’s clean. But 10ft is expert territory, and this is a reef break, so only the most experienced should be looking at it. The crowd situation is “sometimes,” so there could be a few others out there, but it’s not a circus.
The rest of the second week fades out with onshore slop and strong winds, nothing worth chasing. The standout is that Saturday, September 12th afternoon window, but it’s a long way off and the confidence is low. For now, it’s a waiting game.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Thu morning. Warm (max 28°C on Tue morning, min 26°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Fri morning. Warm (max 29°C on Fri afternoon, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | N 7 | N 7 | N 7 | N 7 | N 10 | N 10 | N 10 | NNW 8 | N 10 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 331 | 473 | 497 | 775 | 364 | 270 | 467 | 416 | 237 | 62 | 87 | 85 | 70 | 452 | 524 | 340 | 118 | 121 | 56 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | on | on | on | on |
High Tide | 8:54AM2.02m | 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 | |||||||
Low Tide | 2:47AM0.45m | 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 | |||||||
 |  | | | |  |  | | | | | |  | | | |  | | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:50 | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — |
mm | 3 | 1 | 2 | 4 | 1 | — | 1 | 3 | 4 | 1 | 9 | 2 | — | 1 | 2 | 6 | 9 | 6 | 3 |
Temp °C | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 29 | 27 | 29 | 29 | 28 | 28 | 27 | 26 |
Feels °C | 28 | 28 | 28 | 27 | 29 | 28 | 30 | 30 | 29 | 31 | 32 | 33 | 31 | 33 | 33 | 32 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 10 | SW 9 | SW 10 | SW 10 | SW 10 | E 10 | E 10 | SW 12 | SW 11 | SW 10 | N 7 | SW 9 | N 10 | N 10 | N 10 | SSW 8 | N 10 | SSW 8 |
| kJ | 26 | 33 | 39 | 79 | 122 | 200 | 467 | 416 | 298 | 308 | 208 | 85 | 144 | 452 | 524 | 340 | 122 | 121 | 107 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SSW 8 | E 15 | E 14 | E 13 | E 12 | SW 10 | SW 10 | E 10 | N 7 | N 7 | SW 10 | N 7 | SSW 9 | SSW 8 | S 9 | NNW 8 | NW 7 | N 8 |
| kJ | 24 | 13 | 4 | 15 | 12 | 12 | 192 | 231 | 237 | 62 | 87 | 141 | 70 | 194 | 134 | 74 | 118 | 16 | 49 |
Swell 3 Height (m) Direction Period (s) | SW 10 | E 15 | E 15 | S 8 | — | ENE 12 | — | NNE 6 | N 7 | E 9 | SSW 9 | S 10 | S 10 | E 9 | E 10 | SW 8 | E 9 | E 9 | E 10 |
| kJ | 15 | 4 | 17 | 1 | — | 50 | — | 66 | 55 | 62 | 86 | 88 | 117 | 14 | 17 | 43 | 15 | 14 | 56 |
Wind waves Height (m) Direction Period (s) | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | NE 5 | N 6 | W 3 | SW 3 | — | SW 2 | — | — | — | S 9 | — | SSW 8 | — |
| kJ | 331 | 473 | 497 | 775 | 364 | 270 | 51 | 35 | 2 | 2 | — | 1 | — | — | — | 73 | — | 167 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 631 | 647 | 621 | 613 | 13 | 12 | 37 | 11 | 0 | 11 | 11 | 11 | 10 | 10 | 10 | 12 | 13 | 12 | 12 |
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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