
Surf Forecasts:
Tengan surf forecast from 30 Jul 2026:
- Best quality surf: Monday 3 Aug, 12PM (local time) - 3ft (0.9m), 16s period, ESE swell with cross-offshore winds.
- Most powerful swell: Thursday 6 Aug, 12PM (local time) - 13ft (4.0m), 19s period, E swell with 11,715 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 9PM (local time) - 1.5ft (0.5m), 15s 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 9PM. The primary swell is predicted to be 0.5m and 15s 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 4.0m 19s and forecast to arrive on Thursday (Aug 06) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Tuesday (Aug 04) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 2nd Aug) | 1.5ft (0.5m) 15s |
| Best Surf | 12PM (Mon 3rd Aug) | 3ft (0.9m) 16s |
| Most Powerful | 12PM (Thu 6th Aug) | 13ft (4.0m) 19s |
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 cookin’ for Tengan.
Honestly, we’re staring down the barrel of a pretty bleak stretch. For the first week, there’s just nothing happening. We’re talking flat, or close to it, with tiny dribbles of 0.7ft to 2ft swell from the east. The wind is light and sometimes glassy, but with that little energy, it’s just a lake. The combined energy is barely a whisper, sitting at just 9 (weak energy) for the first few days. Don’t bother waxing up.
We do finally see a pulse of energy arriving on Monday, August 3rd, with a 3ft easterly swell rolling in. The period is a long 16 seconds, which is proper groundswell, but the wind is cross and the energy is still moderate at 535. It’s just a tease. The swell builds through Tuesday, August 4th, hitting 5ft in the morning and 5ft by the afternoon. The combined energy jumps up to 1232 and 1555 (moderate) but those winds are cross and cross-onshore, so it’s going to be lumpy.
Then it gets ugly. The swell keeps pumping, but so does the wind. By Wednesday, August 5th, we’re looking at 7ft to 8ft from the east, but with a strong 25-30 km/h cross-onshore wind, it’s going to be a choppy mess. The energy is strong (2946 to 3762), but it’s not for paddling. Honestly, this looks more like a kite session than a surf session.
Thursday, August 6th, is a total write-off. The swell jumps to 13ft, but the wind is screaming at 50-60 km/h. The energy is a massive 10456 to 12680 (very strong), but you’d be a madman to go out in that.
Now, here’s a wild one. Friday, August 7th, the forecast shows a 23ft swell from the north. The wind is a violent 105 km/h, but it’s cross-offshore, so it reads as clean. That’s a hurricane-forced blow. The energy is off the charts at 24661. The guidance says it’s too big for this break, and that’s a serious red flag. This is expert-only, life-threatening stuff, and honestly, it’s not worth the risk. The swell then crashes down to 1.0ft on Saturday, August 8th, leaving us with nothing but stormy leftover slop and near-gale winds.
We settle into a long, boring pattern from Sunday, August 9th, through to the end of the forecast on Thursday, August 14th. The swell is a pathetic 2ft to 3ft from the east or southeast, with periods all over the place and the wind is onshore or cross-onshore. The combined energy is weak, usually around 200-400. It’s a total blank.
The best of a bad bunch – and I’m scraping the barrel here – is the Tuesday morning, August 4th swell. A 5ft easterly groundswell (18 seconds) with a gentle cross-shore wind. It’s *marginal*, but it’s the only period where the window is even slightly open. The water is a warm 86°F, which is about a degree warmer than usual, so that’s nice. But for Tengan, a reef break that’s inconsistent and exposed to the northeast, this easterly swell isn’t hitting its optimum. The crowds are only sometimes there, so you might have it to yourself. But don’t expect much.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Thu afternoon, min 27°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sun night. Warm (max 31°C on Mon afternoon, min 28°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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) | ESE 9 | ESE 9 | ESE 9 | E 10 | E 9 | E 9 | E 9 | SE 9 | E 9 | E 19 | E 17 | ESE 16 | ESE 15 | E 16 | E 18 | E 18 | E 18 | E 18 | E 18 | E 18 | E 19 |
Wave Graph | |||||||||||||||||||||
8 | 17 | 8 | 7 | 6 | 6 | 6 | 3 | 6 | 29 | 151 | 259 | 300 | 529 | 733 | 1224 | 1555 | 2249 | 2946 | 3726 | 6265 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | glassy | glassy | glassy | cross-off | glassy | glassy | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 7:57PM2.01m | 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 | 1:25PM0.27m | 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 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | |
— | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | — | 3 | — | — | — | — | 1 | 3 | — | — | 1 |
Temp °C | 29 | 30 | 29 | 29 | 29 | 28 | 29 | 30 | 28 | 30 | 30 | 29 | 30 | 31 | 29 | 30 | 30 | 28 | 30 | 31 | 29 |
Feels °C | 34 | 35 | 34 | 34 | 34 | 33 | 34 | 34 | 32 | 33 | 32 | 33 | 32 | 33 | 33 | 33 | 33 | 31 | 31 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | E 16 | E 17 | ESE 16 | ESE 15 | E 16 | E 18 | E 18 | E 18 | E 18 | E 18 | E 18 | E 19 |
8 | 17 | 8 | 10 | 10 | 10 | 11 | 3 | 3 | 19 | 151 | 259 | 300 | 529 | 733 | 1224 | 1555 | 2249 | 2946 | 3726 | 6265 | |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 8 | SE 9 | SE 10 | E 9 | E 9 | SE 9 | E 9 | E 19 | E 9 | WSW 7 | W 4 | SW 7 | W 7 | SSW 9 | SSW 8 | SSE 8 | — | — | — |
10 | 10 | 10 | 3 | 4 | 6 | 6 | 3 | 6 | 29 | 6 | 5 | 1 | 2 | 4 | 7 | 24 | 21 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SE 5 | S 7 | E 13 | E 10 | E 9 | SE 9 | — | E 9 | E 18 | SW 8 | SE 9 | S 7 | S 8 | S 7 | SE 9 | SE 14 | — | — | — | — | — |
1 | 1 | 3 | 7 | 6 | 3 | — | 2 | 6 | 3 | 3 | 1 | 1 | 1 | 3 | 8 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NNW 5 | NW 2 | NNW 4 | N 4 | N 3 | N 4 | N 4 | — | — | — | NNE 6 | NNE 5 |
— | — | — | — | — | — | — | — | — | 2 | 1 | 4 | 5 | 6 | 8 | 13 | — | — | — | 36 | 51 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 696 | 990 | 66 | 757 | 875 | 980 | 1458 | 1014 | 648 | 11 | 27 | 0 | 647 | 25 | 12 | 23 | 23 | 12 | 23 | 745 | 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.










