Surf Forecasts:
Tengan surf forecast from 30 Jul 2026:
- Best quality surf: Thursday 6 Aug, 9PM (local time) - 15ft (4.5m), 19s period, E swell with cross-shore winds.
- Most powerful swell: Friday 7 Aug, 3AM (local time) - 30ft (9.0m), 12s period, N swell with 23,302 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 3PM (local time) - 1.5ft (0.5m), 17s 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 Sunday (Aug 02) at 3PM. The primary swell is predicted to be 0.5m and 17s period with a secondary swell of 0.2m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tengan in the next 16 days are 9.0m 12s and forecast to arrive on Friday (Aug 07) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Tuesday (Aug 04) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sun 2nd Aug) | 1.5ft (0.5m) 17s |
| Best Surf | 9PM (Thu 6th Aug) | 15ft (4.5m) 19s |
| Most Powerful | 3AM (Fri 7th Aug) | 30ft (9.0m) 12s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Hey mates, Rusty here. Let’s cut through the chatter. The surf is dead right now, and it’s going to stay that way for a while. We’re looking at a gap of several days with nothing on offer until we get a whisper of life.
The first sign of a wave doesn’t appear until Monday the 3rd of August. The water’s sitting at 86°, which is a touch warmer than normal for this time of year, so it’s not all bad.
From Thursday the 30th of July through to Sunday the 2nd of August, it’s flat. We’re talking waves under 2 ft with close to no energy. Time to kick back.
Monday the 3rd of August is the start of something. Tengan, a reef break that’s fairly exposed but inconsistent, gets its first pulse. The swell comes up to 3 ft from the ESE with a long period of 15 seconds. That’s proper groundswell, giving the waves shape and power, but those long gaps between sets can make it break a bit straight on the reef – look for a deeper spot. The combined energy clocks in at a moderate 299. Winds are light offshore from the NNW, keeping the faces clean and glassy. This is the standout window for beginners, as the size is just right.
Tuesday the 4th of August sees the swell push to a solid 5 ft to 5 ft from the E, with an even longer 18-second period. The wave energy jumps up to a strong 1241 to 1633. This is getting serious. The north cross-shore kicks up to 12 mph by morning, making the surface a bit lumpy, and it gets messy by the afternoon. This one is for experienced surfers who can handle a bit of chop on a powerful wave. Not for the faint-hearted.
Wednesday the 5th of August goes big. The swell pumps up to 8 ft in the morning and 10 ft in the afternoon from the E, with a long 19-second period. Energy is very high, hitting 3949 and 6086. This is expert-only. The wind is a moderate to fresh cross-shore at 16 to 22 mph, leaving the surface lumpy and cross-chop. Only the hardcore should even look at it.
From Thursday the 6th of August, everything turns grim. A gale and violent storm-force winds tear through, creating a dangerous, huge mess. The conditions stay blown out for days after that, with onshore winds and chopped-up waves up to 6 ft. No more standouts in the second week – it’s just a blown-out, onshore washout.
So the bottom line: the one, true clear window is Monday the 3rd of August morning at Tengan for a clean, gentle wave. After that, you get power but with rough wind, and then the whole show gets wrecked. Keep your expectations low out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Fri morning, min 27°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Mon night. Warm (max 31°C on Mon afternoon, min 28°C on Sun night). Winds increasing (light winds from the N on Sun night, fresh winds from the NNE by Wed afternoon). | ||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | ESE 9 | E 10 | E 9 | E 9 | E 9 | SE 11 | E 18 | E 19 | E 17 | E 16 | ESE 15 | ESE 16 | E 18 | E 18 | E 19 | E 18 | E 18 | E 19 | E 19 |
Wave Graph  | |||||||||||||||||||
 kJ | 8 | 7 | 6 | 6 | 6 | 5 | 6 | 29 | 151 | 245 | 300 | 416 | 775 | 1044 | 1762 | 2633 | 3100 | 4763 | 7900 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | glassy | glassy | glassy | glassy | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross |
High Tide | 7:14AM2.12m | 8:22PM2.04m | 7:50AM2.12m | 8:47PM2.06m | 8:26AM2.07m | 9:13PM2.06m | 9:06AM1.99m | 9:41PM2.04m | 9:50AM1.87m | 10:10PM2.00m | 10:43AM1.73m | 10:45PM1.94m | |||||||
Low Tide | 1:32AM0.89m | 1:52PM0.26m | 2:04AM0.82m | 2:20PM0.30m | 2:38AM0.76m | 2:49PM0.38m | 3:14AM0.71m | 3:18PM0.52m | 3:54AM0.69m | 3:50PM0.69m | 4:40AM0.68m | 4:26PM0.88m | |||||||
 |  | | | | | | | |  | | | |  | | | | | | |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — |
 | 7:16 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | — | — | 2 | 1 | 1 | 2 | 1 | — | 1 |
Temp °C | 29 | 30 | 30 | 29 | 29 | 30 | 28 | 29 | 30 | 28 | 30 | 31 | 29 | 31 | 30 | 28 | 30 | 30 | 29 |
Feels °C | 34 | 35 | 35 | 34 | 34 | 35 | 32 | 32 | 33 | 31 | 32 | 33 | 32 | 34 | 33 | 31 | 31 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | E 16 | E 17 | E 16 | ESE 15 | ESE 16 | E 18 | E 18 | E 19 | E 18 | E 18 | E 19 | E 19 |
| kJ | 8 | 10 | 10 | 10 | 11 | 3 | 3 | 19 | 151 | 245 | 300 | 416 | 775 | 1044 | 1762 | 2633 | 3100 | 4763 | 7900 |
Swell 2 Height (m) Direction Period (s) | SW 8 | SE 9 | E 9 | E 9 | E 9 | E 9 | SE 9 | E 19 | E 8 | W 7 | SW 7 | SW 7 | S 9 | S 9 | S 8 | — | — | — | — |
| kJ | 10 | 3 | 6 | 6 | 6 | 2 | 3 | 29 | 6 | 4 | 2 | 2 | 6 | 6 | 5 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 13 | E 10 | SE 10 | SE 9 | SE 11 | SE 11 | E 18 | SW 8 | SW 8 | S 7 | S 7 | S 7 | SW 7 | — | — | — | — | — | — |
| kJ | 3 | 7 | 4 | 3 | 5 | 5 | 6 | 3 | 2 | 1 | 1 | 1 | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | N 3 | N 3 | N 4 | N 5 | N 5 | SE 8 | NNE 5 | NNE 6 | NNE 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | 2 | 5 | 19 | 24 | 23 | 31 | 33 | 71 | 176 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 990 | 66 | 757 | 875 | 1005 | 1496 | 1009 | 648 | 11 | 24 | 0 | 0 | 24 | 0 | 621 | 613 | 23 | 621 | 621 |
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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