
Surf Forecasts:
Tengan surf forecast from 25 Jul 2026:
- Most powerful swell: Tuesday 28 Jul, 3PM (local time) - 1ft (0.3m), 10s period, ESE swell with 19 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 10s and forecast to arrive on Tuesday (Jul 28) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 9s period and expected on Saturday (Jul 25) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Tue 28th Jul) | 1ft (0.3m) 10s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, let’s talk about Tengan. This is a fairly exposed reef break that picks up swell best from the northeast. But honestly, for the first week and a half, it’s looking pretty flat. You’re staring at a long stretch of nothing from now until the morning of Monday, August 3rd. That’s over a week of tiny, weak waves that barely reach your shin – if you can even call them waves. The water temp is sitting at a warm 85°, which is pretty much average for this time of year, so at least you won’t be cold while you’re sitting there waiting.
Then things start to get interesting. Monday morning, August 3rd, we finally see a pulse of energy. The swell bumps up to 2ft from the east, with a period of 16 seconds – that’s a proper long-period groundswell. The combined energy jumps to 254 (moderate), and the wind is dead calm, glassy. It’s surfable, but the conditions are still just ordinary. That afternoon, the swell pushes a little more at 3ft from the east, 16 seconds, with 334 energy, but a light cross-onshore breeze comes in. It’s not the best, but it’s a start.
Now, Tuesday, August 4th, is the real standout for this whole forecast. This is the one to circle on your calendar. Tuesday morning, the swell is a solid 4ft from the east, with a very long period of 18 seconds, and the combined energy is a strong 1080. The wind is glassy, dead calm. The waves will be clean, powerful, and lined up. This is a reef break, so that long-period groundswell is going to wrap in nicely. Tuesday afternoon gets even better: 5ft from the east, still 18 seconds, and the energy jumps to 1484. The wind swings to a light cross-offshore from the SSW, making for clean, hollow faces. This is excellent surf, but at 5ft, it’s getting a bit punchy for beginners. More experienced surfers are going to have a field day.
However, don’t get too comfortable. Wednesday, August 5th, the wind goes to hell. A strong southeast breeze kicks up to 30 km/h, turning that nice 6ft east swell into a lumpy, cross-onshore mess. The same happens Thursday and Friday, with the swell getting even bigger – up to 8ft – but that fresh onshore wind trashs it. The energy is through the roof (over 3000), but it’s not for paddling; that setup would be more interesting for kite surfing than a regular surfboard.
Saturday, August 8th, the wind finally drops and turns cross-offshore from the NNW, but the swell is a bit mixed. Morning has a cleaner 4ft east swell, but the afternoon jumps to 8ft from the NNW with a short, weak period of 10 seconds – it’s clean but a bit of a choppy mess. Sunday, August 9th, the morning looks okay with a 4ft northwest swell and light offshore winds, but the period is a short 8 seconds, so it’ll be a bit weak and sectiony.
Bottom line: if you want the best waves, you’re looking at Tuesday, August 4th. The morning is glassy with head-high, long-period groundswell, and the afternoon is even bigger and cleaner. Don’t miss it.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sat morning, min 27°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Tue night. Warm (max 29°C on Tue morning, min 27°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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) | ENE 9 | ESE 11 | ESE 10 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 10 | SE 10 | N 5 |
Wave Graph | |||||||||||||||||||||
9 | 11 | 10 | 16 | 18 | 18 | 16 | 17 | 16 | 16 | 19 | 16 | 15 | 15 | 17 | 17 | 9 | 8 | 7 | 4 | 5 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | cross-on | on | on | on | cross-on | on | on | on | on | glassy | glassy | glassy | cross | cross-off | cross | cross | cross | cross |
High Tide | 5:34PM1.66m | 3:45AM1.73m | 6:12PM1.76m | 4:41AM1.81m | 6:42PM1.84m | 5:26AM1.91m | 7:08PM1.91m | 6:04AM2.00m | 7:32PM1.96m | 6:39AM2.08m | 7:57PM2.01m | 7:14AM2.12m | 8:22PM2.04m | ||||||||
Low Tide | 10:23AM0.67m | 10:28PM1.32m | 11:14AM0.57m | 11:21PM1.25m | 11:54AM0.48m | 11:59PM1.16m | 12:27PM0.39m | 00:30AM1.07m | 12:57PM0.32m | 1:01AM0.98m | 1:25PM0.27m | 1:32AM0.89m | 1:52PM0.26m | 2:04AM0.82m | |||||||
5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | |
— | 7:20 | — | — | 7:19 | — | — | 7:19 | — | — | 7:17 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 2 | — | — | — | — | — | — | — |
Temp °C | 30 | 30 | 29 | 29 | 30 | 28 | 29 | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 |
Feels °C | 35 | 35 | 35 | 33 | 34 | 32 | 33 | 34 | 32 | 33 | 32 | 32 | 34 | 34 | 33 | 33 | 33 | 32 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 9 | S 8 | S 9 | S 8 | S 9 | S 8 | S 8 | S 8 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | ESE 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 |
72 | 62 | 50 | 59 | 52 | 39 | 32 | 20 | 10 | 16 | 19 | 16 | 15 | 15 | 17 | 19 | 20 | 19 | 13 | 12 | 21 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ESE 10 | SW 8 | SSW 9 | SW 8 | SW 9 | SE 10 | SE 10 | S 8 | S 8 | S 7 | ESE 5 | SW 7 | SW 8 | ESE 9 | ESE 9 | ESE 9 | E 10 | SE 10 | N 5 |
9 | 8 | 10 | 17 | 33 | 17 | 12 | 17 | 16 | 10 | 4 | 4 | 3 | 9 | 10 | 17 | 9 | 8 | 7 | 4 | 5 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | ESE 11 | ENE 9 | SE 10 | SE 11 | SE 11 | SE 10 | SW 8 | WSW 8 | SW 8 | SW 8 | E 9 | SW 8 | ESE 5 | S 7 | S 7 | S 7 | SE 12 | SE 9 | N 5 | SE 9 |
5 | 11 | 8 | 16 | 18 | 18 | 16 | 11 | 6 | 2 | 3 | 7 | 2 | 2 | 1 | 1 | 1 | 6 | 3 | 2 | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 2 | — | E 2 | E 3 | ESE 4 | ESE 4 | ESE 4 | ESE 5 | — | — | — | — | — | — | — | — | NNE 3 |
— | — | — | — | 1 | — | 1 | 1 | 2 | 3 | 6 | 4 | — | — | — | — | — | — | — | — | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 812 | 12 | 27 | 27 | 40 | 696 | 840 | 757 | 648 | 858 | 657 |
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.










