
Surf Forecasts:
Tengan surf forecast from 26 Jul 2026:
- Most powerful swell: Monday 27 Jul, 3PM (local time) - 1.5ft (0.4m), 10s period, SE 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 0.4m 10s and forecast to arrive on Monday (Jul 27) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 9s period and expected on Sunday (Jul 26) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Mon 27th Jul) | 1.5ft (0.4m) 10s |
Table - best surf conditions forecast for Tengan over the next 16 days.
The Lowdown
Alright, let’s get into it. Rusty here, and I’ve gotta be straight with you – the next week and a half is a bit of a write-off for any proper waves around here. We’re looking at a long, frustrating gap with nothing worth paddling out for until we hit the first week of August.
For days, it’s flat or tiny. From the 26th of July right through to the morning of the 3rd of August, we’re stuck with knee-biters and close-outs. The swell energy is barely registering, often weak single digits (4 to 28) with short, weak periods. Winds are messy or just onshore. It’s a classic summer flat spell.
But hang in there, because things finally turn around. The standout window kicks off on Monday, the 3rd of August. That morning, Tengan (reef) starts to wake up. We’re seeing a groundswell push in from the East with a period stretching to 15 seconds. The swell height is only around 2ft, but the energy jumps to a moderate 116. The wind is dead calm – glassy as it gets. It’s still small, but it’s a sign of life.
Then it gets serious. Tuesday, the 4th of August is the absolute best of the whole forecast. By the afternoon, we’ve got a solid 3ft East swell with a very long 16-second period. The combined energy is strong at 528, which tells you there’s proper push behind it. And the wind? Glassy, light from the NNW. That’s the recipe for clean, lined-up reef waves. This will be the pick of the bunch, and it’s perfect for anyone who’s comfortable on a mid-length or longboard. The crowd factor at Tengan is listed as "sometimes", so you might have a few out, but nothing crazy for a setup this good.
Wednesday the 5th keeps that quality going – 4ft East swell, 16-second period, and light offshore/cross-off winds from the NW and NNW. Energy stays strong in the 500-600 range. Excellent conditions.
Into Thursday the 6th, we get a size bump to 5ft, still with that long 18-second East groundswell. Energy jumps to a very strong 1211. But here’s the catch – the wind goes a bit cross-shore, and the wave comment flags potential tide issues. This one is more for experienced surfers who know the reef. It’s still good, but not as perfect as Tuesday.
Friday the 7th afternoon is a major standout for the big-wave crew. Swell hits 6ft from the East, 17-second period, and the energy is enormous at 1941. The wind goes completely glassy – calm, offshore from the SSW. That is excellent, powerful surf for experienced surfers only. This is not a day for beginners; at over 5ft, it’s too big for the less experienced. The wave comment even calls it "excellent surf conditions for experienced surfers." This is the session to wait for if you’ve got the chops.
Saturday the 8th keeps the size around 5ft, with clean offshore winds from the West in the afternoon. Energy is still very high at 1240. Another solid day for advanced surfing.
Then it all falls apart again. By Sunday the 9th, strong winds kick in, the swell drops, and we’re back to poor conditions through to the end of the forecast.
To wrap it up: The first week is a total blank. The real action is from Monday, 3rd August through Saturday, 8th August. The absolute best day for clean, fun, quality surf is Tuesday the 4th – 3ft East groundswell with glassy winds and strong energy. For the adrenaline junkies, Friday the 7th offers the biggest, most powerful conditions, but only for experts. Water temp is sitting at a warm 85°F, which is about average for this time of year, so the boardies are all you need.
This is Rusty, signing off. Get your gear ready for that first week of August. It’s gonna be worth the wait.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun afternoon. Warm (max 30°C on Sun afternoon, min 28°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Wed afternoon. Warm (max 29°C on Wed afternoon, min 27°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||
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) | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 10 | E 9 | N 5 | N 5 | N 5 | E 9 |
Wave Graph | ||||||||||||||||||||
18 | 18 | 17 | 27 | 16 | 16 | 19 | 16 | 15 | 17 | 17 | 8 | 17 | 8 | 7 | 6 | 2 | 2 | 3 | 3 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | on | cross-on | on | glassy | glassy | glassy | cross-off | cross-off | glassy | cross-off | glassy | cross | cross-off | cross | cross-on |
High Tide | 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 | 7:50AM2.12m | 8:47PM2.06m | |||||||
Low Tide | 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 | 2:20PM0.30m | 2:38AM0.76m | |||||||
— | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | |
7:19 | — | — | 7:19 | — | — | 7:17 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | |
mm | 1 | — | — | — | 1 | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 29 | 30 | 30 | 29 | 30 | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 |
Feels °C | 34 | 34 | 33 | 33 | 34 | 33 | 33 | 32 | 33 | 34 | 33 | 33 | 33 | 32 | 34 | 34 | 31 | 33 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 8 | S 8 | S 8 | SE 10 | ESE 10 | SE 10 | SE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 9 | SW 9 |
37 | 39 | 33 | 20 | 11 | 16 | 19 | 16 | 15 | 17 | 17 | 8 | 17 | 10 | 11 | 11 | 11 | 11 | 13 | 12 | |
Swell 2 Height (m) Direction Period (s) | SSW 9 | SW 8 | SW 9 | SE 10 | SE 10 | S 8 | S 8 | SW 8 | ESE 5 | SW 8 | SW 8 | SW 8 | SW 8 | ESE 9 | E 10 | E 9 | N 5 | N 5 | SE 9 | SE 8 |
33 | 17 | 12 | 27 | 16 | 10 | 4 | 9 | 2 | 10 | 9 | 9 | 10 | 8 | 7 | 6 | 2 | 2 | 3 | 3 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 10 | SW 8 | WSW 8 | SW 8 | SW 8 | S 7 | SW 8 | ESE 5 | SE 5 | S 7 | S 7 | S 6 | SE 9 | SE 9 | E 9 | E 9 | N 5 | E 9 |
18 | 18 | 17 | 10 | 6 | 2 | 2 | 4 | 9 | 2 | 1 | 1 | 1 | 1 | 3 | 3 | 2 | 2 | 2 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 2 | ESE 2 | ESE 4 | ESE 4 | ESE 5 | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | 1 | 1 | 1 | 2 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 12 | 648 | 1009 | 648 | 66 | 27 | 66 | 696 | 990 | 732 | 648 | 858 | 1005 | 805 | 805 | 648 |
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.










