Surf Forecasts:
Tengan surf forecast from 17 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 9PM (local time) - 1ft (0.3m), 12s period, ENE swell with 27 kJ wave energy.
Best Forecast Surf Conditions for Tengan this week:
The most powerful waves expected at Tengan in the next 16 days are 0.3m 12s and forecast to arrive on Wednesday (Jul 22) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 9s period and expected on Friday (Jul 17) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9PM (Wed 22nd Jul) | 1ft (0.3m) 12s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, let’s get into it. This is a tough one to start, I’m not gonna lie. Tengan is a reef break that’s inconsistent, and for the first week and a half or so, there’s just nothing doing. The forecast shows a long stretch of tiny, weak surf with hardly any energy — that combined swell energy is hanging around 3 to 28 (weak) for days. The water is a bit colder than the norm for July, sitting at 81°, with an anomaly of -3°, so it’s a noticeable chill in the air.
The first real sign of life doesn’t show up until Sunday the 26th of July. It’s still not great, but there’s a pulse of swell energy coming through at 169 (moderate), with a 2ft swell from the southeast at a 12-second period. That’s a long-period groundswell, which is better for a reef setup like this, but the wind is a cross-onshore from the north-northeast at 15 mph, making it choppy. The quality is still poor.
The energy picks up significantly on Monday the 27th of July, with combined energy hitting 540 (strong) and a 4ft swell from the east at 13 seconds. That’s a solid groundswell, but the wind is a near-gale from the north-northeast at 37 mph, blowing it out completely. This is a mess for paddle surfing, honestly looks more interesting for kite surfing than anything else.
The best chance in this whole outlook comes on Thursday the 30th of July. The morning shows a 4ft swell from the north at 10 seconds, with a combined energy of 350 (moderate to strong). The wind is cross-offshore from the southwest at 12 mph, so the wave faces should be clean. It’s a marginal call, but it’s the only window where the conditions align. The afternoon holds similar energy at 284 (moderate), with a 4ft north swell and still clean cross-off wind. For a spot that rarely breaks well, this is the standout, but it’s still only a 1 out of 10 on the score. Not a classic, but if you’re desperate, that’s your window.
After that, it fades back to tiny and weak. Overall, a poor run of surf for Tengan, with a long gap of nothing and only a couple of days that offer anything rideable.
Rusty
Short Range ForecastMostly dry. Warm (max 30°C on Sun morning, min 27°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Mon afternoon, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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 | E 10 | SE 9 | SE 8 | SW 8 | E 10 | E 10 | E 9 | E 10 | E 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | ENE 11 | ENE 10 | ENE 10 | ENE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 8 | 8 | 3 | 3 | 0 | 7 | 7 | 7 | 7 | 7 | 9 | 17 | 16 | 17 | 16 | 16 | 24 | 22 | 20 | 19 |
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 | cross-on | cross-on | cross | cross-off | cross-on | cross | cross-off | glassy | cross-off | glassy | glassy | glassy | on | cross-on |
High Tide | 9:24PM2.06m | 8:58AM2.06m | 9:57PM2.01m | 9:46AM1.91m | 10:29PM1.97m | 10:37AM1.75m | 11:00PM1.91m | 11:37AM1.59m | 11:34PM1.85m | 12:58PM1.48m | 00:16AM1.79m | 2:54PM1.46m | 1:15AM1.72m | ||||||||
Low Tide | 2:53PM0.18m | 3:11AM0.85m | 3:30PM0.35m | 3:56AM0.82m | 4:05PM0.55m | 4:44AM0.81m | 4:39PM0.76m | 5:35AM0.81m | 5:14PM0.96m | 6:36AM0.81m | 5:59PM1.14m | 7:50AM0.80m | 7:10PM1.29m | ||||||||
 | |  | | |  | | | | | | |  | | | | | | |  | | |
 | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — |
 | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:21 | — | — | 7:21 | — | — | 7:21 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 29 | 29 | 28 | 29 | 29 | 28 | 30 | 30 | 29 | 29 | 30 | 28 | 29 | 29 | 27 | 28 | 29 | 28 | 28 | 28 | 27 |
Feels °C | 32 | 32 | 33 | 33 | 32 | 33 | 35 | 35 | 34 | 34 | 34 | 32 | 32 | 32 | 32 | 32 | 34 | 33 | 33 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 7 | W 7 | W 9 | W 8 | SW 8 | W 8 | W 7 | SW 7 | W 8 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 6 | ENE 11 | ENE 10 | ENE 10 | ENE 10 |
| kJ | 11 | 38 | 35 | 73 | 54 | 39 | 54 | 37 | 34 | 43 | 34 | 32 | 17 | 16 | 18 | 12 | 10 | 24 | 22 | 20 | 19 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | ESE 9 | SW 8 | SW 8 | W 7 | SW 8 | SW 8 | W 7 | SW 7 | W 7 | W 6 | W 6 | W 6 | ENE 9 | W 6 | E 9 | SW 7 | SW 7 | SW 7 | SW 7 |
| kJ | 8 | 8 | 8 | 55 | 40 | 37 | 37 | 50 | 23 | 27 | 25 | 13 | 7 | 7 | 17 | 7 | 16 | 8 | 8 | 8 | 9 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 9 | E 10 | SE 9 | SE 8 | W 9 | E 10 | E 10 | E 9 | E 10 | E 10 | ENE 10 | ENE 9 | ENE 9 | W 6 | ENE 9 | W 6 | W 6 | W 7 | W 6 | W 6 |
| kJ | 3 | 3 | 8 | 3 | 3 | 26 | 7 | 7 | 7 | 7 | 7 | 9 | 17 | 16 | 3 | 16 | 3 | 2 | 4 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | WSW 5 | SW 9 | SW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 39 | 93 | 43 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 679 | 657 | 66 | 27 | 66 | 10 | 10 | 10 | 12 | 52 | 52 | 52 | 27 | 27 | 27 | 27 | 14 | 14 | 28 | 28 | 14 |
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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