Surf Forecasts:
Tengan surf forecast from 4 Aug 2026:
- Best quality surf: Friday 7 Aug, 6AM (local time) - 15ft (4.5m), 18s period, E swell with cross-offshore winds.
- Most powerful swell: Friday 7 Aug, 9PM (local time) - 43ft (13.0m), 14s period, N swell with 65,529 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 6AM (local time) - 15ft (4.5m), 18s 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 Friday (Aug 07) at 6AM. The primary swell is predicted to be 4.5m and 18s period with a secondary swell of 6.5m and 11s. 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 13.0m 14s and forecast to arrive on Friday (Aug 07) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 13.0m 14s period and expected on Sunday (Aug 09) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 7th Aug) | 15ft (4.5m) 18s |
| Best Surf | 6AM (Fri 7th Aug) | 15ft (4.5m) 18s |
| Most Powerful | 9PM (Fri 7th Aug) | 43ft (13.0m) 14s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s cookin’ at Tengan.
Right off the bat, we’re looking at a pretty bleak start to the window. The first few days are a bit of a write-off. Tuesday the 4th and Wednesday the 5th serve up waist-to-chest high swell from the east, but it’s all cross-onshore and choppy. The water’s a touch warmer than normal at 87°, but that’s small comfort when the wind’s got the surface all messy. Not worth paddling out for.
Thursday the 6th is a hard pass. Swell jumps up to 10ft to 12ft, but the wind is howling cross-shore at 28-31 mph. The energy is massive (6533 to 9755), but it’s just a washing machine. This setup looks far more interesting for kite surfing than paddle surfing.
Now, Friday the 7th is where things get wild. There’s a beast of a NW swell hitting – 23ft in the morning, 34ft in the afternoon. The wind is clean and cross-offshore, but this is expert only territory. The swell is way too big for anyone who doesn’t have serious big-wave gear and a death wish. The period is 12-13 seconds, so it’s got grunt, but it’s a dangerous beast.
The standout window is Saturday the 8th. The swell drops to a still-chunky 15ft from the NW in the afternoon, but here’s the magic: gentle offshore wind from the WSW. That’s clean, glassy faces. The combined energy is still pumping at 10344, so there’s plenty of push. This is exceptional for expert surfers. If you’re good enough, Saturday afternoon is your moment. The morning is still big (23ft) but clean, so it’s a solid option for the brave.
After that, from Sunday the 9th all the way through to Wednesday the 20th, it’s a long, flat spell. The swell drops to under 3ft, and most days have zero wave energy. A few tiny pulses (1ft to 2ft) from the east or north show up, but with periods under 11 seconds and minimal energy, you’re just bobbing around. There’s a brief moment on the morning of Wednesday the 12th with a 3ft NW swell and light offshore wind, but it’s only worth a mention if you’re desperate.
So, the only real play in this 16-day window is Saturday the 8th. Be there or be square.
Stay loose,
Rusty
Short Range ForecastHeavy rain (total 22mm), heaviest during Thu night. Warm (max 31°C on Tue morning, min 28°C on Tue night). Winds increasing (light winds from the NE on Tue morning, gales from the NNW by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 474mm), heaviest during Fri afternoon. Warm (max 30°C on Fri night, min 28°C on Fri morning). Winds decreasing (extremely windy from the NW on Fri afternoon, light winds from the NW by Sat morning). | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 18 | E 17 | E 17 | E 17 | E 17 | E 18 | E 17 | E 18 | E 18 | N 12 | N 13 | N 14 | N 12 | NW 11 | NW 11 | NNE 15 | WSW 13 | E 14 | E 14 | ENE 14 | E 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 871 | 1009 | 1526 | 1682 | 1885 | 4478 | 5711 | 7896 | 10599 | 14287 | 35321 | 56728 | 14042 | 5079 | 5966 | 225 | 0 | 106 | 96 | 269 | 94 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:50AM1.87m | 10:10PM2.00m | 10:43AM1.73m | 10:45PM1.94m | 11:55AM1.60m | 11:32PM1.88m | 1:45PM1.54m | 00:42AM1.83m | 3:47PM1.64m | 2:16AM1.84m | 5:01PM1.80m | 3:42AM1.94m | 5:50PM1.94m | ||||||||
Low Tide | 3:50PM0.69m | 4:40AM0.68m | 4:26PM0.88m | 5:37AM0.69m | 5:13PM1.09m | 6:52AM0.68m | 6:30PM1.28m | 8:24AM0.62m | 8:33PM1.36m | 9:48AM0.48m | 10:11PM1.29m | 10:54AM0.32m | 11:13PM1.17m | ||||||||
 | |  |  | |  | | |  | | | | | | | | | |  | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — |
mm | 3 | 2 | 2 | — | 2 | — | 2 | 4 | 7 | 20 | 118 | 81 | 4 | 4 | 12 | 58 | 113 | 64 | 6 | 4 | 4 |
Temp °C | 31 | 30 | 29 | 31 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 30 | 30 | 30 | 30 | 29 | 28 | 29 | 29 | 29 | 29 |
Feels °C | 34 | 33 | 33 | 33 | 31 | 31 | 27 | 26 | 26 | 19 | 13 | 31 | 35 | 36 | 33 | 16 | 11 | 19 | 21 | 23 | 26 |
Swell 1 Height (m) Direction Period (s) | E 18 | E 17 | E 17 | E 17 | E 17 | E 18 | E 17 | E 18 | E 18 | ENE 17 | ENE 16 | ENE 14 | S 13 | NNE 12 | NW 11 | NNE 15 | — | E 14 | E 14 | ENE 14 | WNW 14 |
| kJ | 871 | 1009 | 1526 | 1682 | 1885 | 4478 | 5711 | 7896 | 10599 | 10210 | 5784 | 7051 | 55 | 3267 | 5966 | 225 | — | 106 | 96 | 67 | 10210 |
Swell 2 Height (m) Direction Period (s) | N 5 | N 5 | — | S 8 | S 7 | — | — | — | — | — | — | — | SE 14 | NNE 16 | S 11 | SE 15 | — | — | — | ENE 14 | E 14 |
| kJ | 11 | 11 | — | 5 | 10 | — | — | — | — | — | — | — | 73 | 1493 | 810 | 218 | — | — | — | 269 | 94 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | — | SSW 8 | — | — | — | — | — | — | — | — | SSE 14 | ESE 11 | WSW 14 | — | — | — | — | — | ENE 11 |
| kJ | 5 | 5 | — | 11 | — | — | — | — | — | — | — | — | 431 | 505 | 622 | — | — | — | — | — | 46 |
Wind waves Height (m) Direction Period (s) | — | — | SE 8 | NNE 5 | NNE 4 | NNE 6 | N 8 | N 8 | N 10 | N 12 | N 13 | N 14 | N 12 | NW 11 | W 11 | WSW 11 | WSW 13 | WSW 14 | WSW 14 | W 14 | SSW 11 |
| kJ | — | — | 20 | 19 | 19 | 119 | 822 | 1859 | 5357 | 14287 | 35321 | 56728 | 14042 | 5079 | 6269 | 12377 | 42291 | 60294 | 49299 | 29163 | 1759 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 23 | 621 | 621 | 858 | 745 | 621 | 773 | 773 | 745 | 14 | 0 | 745 | 773 | 773 | 635 | 635 | 631 | 631 |
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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