Surf Forecasts:
Tengan surf forecast from 20 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 3AM (local time) - 3.5ft (1.1m), 10s period, SE swell with 231 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 1.1m 10s and forecast to arrive on Sunday (Jul 26) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.5m 14s period and expected on Monday (Jul 27) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Sun 26th Jul) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, let’s look at what’s on offer at Tengan. Over the next 16 days, we’re staring down a long, flat spell. The first two weeks are basically a washout—14 straight days of junk surf or nothing at all. Water temp is running about 28°, a bit cooler than normal for this time, so don’t expect to be surfing in boardies without feeling it.
The only glimmer shows up on Tuesday, August 4th, in the afternoon. That’s your one shot. Tengan is a reef break that’s usually inconsistent, and it rarely breaks at all, so this is a special little window. You’re looking at a 0.6m swell from the east, with a period of 14 seconds—that’s a long-period groundswell, meaning it’ll have some punch and shape, though on a reef like this, it might wall up a bit. Wind is light from the NNW at 10 km/h, cross-offshore, keeping things clean. The combined energy is 152 (moderate), so there’s enough juice to get a few rides. It’s small enough for beginners, and the conditions are glassy. But don’t expect to have it to yourself—crowds are possible here.
Everything else in the 16 days is a no-go. Strong onshore winds, storm threats, and flat spells dominate. Some of those windier days in late July might be better for kite surfing than paddling out.
Keep your board waxed for that Tuesday afternoon. It’s a rare one.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 29°C on Mon morning, min 27°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Fri morning. Warm (max 29°C on Thu afternoon, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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 10 | E 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SE 11 | ENE 9 | SE 11 | E 4 | E 4 | ENE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7 | 7 | 9 | 8 | 16 | 16 | 16 | 15 | 12 | 20 | 20 | 9 | 19 | 9 | 9 | 18 | 8 | 137 | 13 | 31 | 25 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | on | cross-on | cross-on | on | on | on | on | on | on | cross-on |
High Tide | 10:37AM1.75m | 11:00PM1.91m | 11:37AM1.59m | 11:34PM1.85m | 12:58PM1.48m | 00:16AM1.79m | 2:54PM1.46m | 1:15AM1.72m | 4:37PM1.55m | 2:31AM1.70m | 5:34PM1.66m | 3:45AM1.73m | 6:12PM1.76m | ||||||||
Low Tide | 4:39PM0.76m | 5:35AM0.81m | 5:14PM0.96m | 6:36AM0.81m | 5:59PM1.14m | 7:50AM0.80m | 7:10PM1.29m | 9:13AM0.75m | 9:00PM1.36m | 10:23AM0.67m | 10:28PM1.32m | 11:14AM0.57m | 11:21PM1.25m | ||||||||
 |  |  | | |  | |  | | | | | | | | | |  | | | | |
 | 5:47 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — |
 | — | 7:22 | — | — | 7:21 | — | — | 7:21 | — | — | 7:21 | — | — | 7:20 | — | — | 7:20 | — | — | 7:19 | — |
mm | — | — | — | — | — | — | — | 3 | — | — | 1 | — | 2 | 2 | — | 2 | 1 | 1 | 2 | 4 | 6 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 27 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 27 | 28 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 33 | 32 | 32 | 32 | 32 | 31 | 33 | 33 | 33 | 33 | 34 | 33 | 32 | 32 | 30 | 31 | 30 | 31 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 7 | SW 7 | W 8 | W 7 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SSE 9 | SE 11 | SSE 13 | SSE 13 | SSE 15 |
| kJ | 42 | 34 | 29 | 30 | 25 | 14 | 14 | 10 | 9 | 8 | 20 | 9 | 19 | 9 | 9 | 9 | 8 | 137 | 620 | 894 | 3469 |
Swell 2 Height (m) Direction Period (s) | SW 7 | E 10 | W 6 | SW 7 | SW 7 | W 6 | W 6 | E 9 | W 6 | ENE 10 | SW 7 | SW 7 | W 5 | WSW 5 | SE 11 | SE 11 | ENE 9 | SSE 11 | SW 7 | — | ENE 9 |
| kJ | 25 | 7 | 12 | 30 | 16 | 12 | 6 | 15 | 6 | 20 | 8 | 8 | 2 | 2 | 5 | 18 | 8 | 43 | 2 | — | 25 |
Swell 3 Height (m) Direction Period (s) | E 10 | SE 9 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | W 6 | ENE 11 | W 6 | W 5 | W 5 | SE 9 | SE 9 | W 6 | W 5 | SE 11 | ENE 9 | — | — | — |
| kJ | 7 | 3 | 9 | 8 | 16 | 16 | 16 | 3 | 12 | 6 | 2 | 2 | 3 | 3 | 2 | 1 | 4 | 8 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 7 | — | — | — | — | — | — | — | — | — | — | — | — | E 3 | E 4 | E 3 | E 3 | E 4 | E 4 | — |
| kJ | — | 47 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 2 | 5 | 13 | 31 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 52 | 66 | 52 | 27 | 52 | 66 | 52 | 52 | 52 | 14 | 14 | 28 | 52 | 52 | 648 | 648 | 679 | 13 | 12 | 812 | 679 |
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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