Surf Forecasts:
Udo Shrine surf forecast from 15 Sep 2026:
- Best quality surf: Monday 21 Sep, 9AM (local time) - 23ft (7.0m), 14s period, E swell with cross-onshore winds.
- Most powerful swell: Monday 21 Sep, 9AM (local time) - 23ft (7.0m), 14s period, E swell with 21,408 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 6PM (local time) - 4.5ft (1.3m), 10s period with ESE swell.
Best Forecast Surf Conditions for Udo Shrine this week:
The surf forecast for Udo Shrine over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 6PM. The primary swell is predicted to be 1.3m and 10s period with a secondary swell of 0.5m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Udo Shrine in the next 16 days are 7.0m 14s and forecast to arrive on Monday (Sep 21) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 13s period and expected on Tuesday (Sep 22) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 15th Sep) | 4.5ft (1.3m) 10s |
| Best Surf | 9AM (Mon 21st Sep) | 23ft (7.0m) 14s |
| Most Powerful | 9AM (Mon 21st Sep) | 23ft (7.0m) 14s |
Table - best surf conditions forecast for Udo Shrine over the next 16 days.
The Lowdown
Alright, Rusty here again, this time in feet and miles per hour for the Udo Shrine run.
Water temp is a normal 82°F for this time of year, nothing unusual there. This 16-day forecast is a real story of two halves – a quiet start and then some serious power.
The First Window (Sept 15th - 20th)
Tuesday morning, the 15th, is a quick glimpse of what could have been. We get clean, glassy conditions with a 5ft swell from the ESE, period around 10 seconds. The combined wave energy is moderate at 460. It's the only decent window for a few days. From Tuesday afternoon through to Sunday the 20th, it's a write-off. Winds go cross-onshore or onshore, and the swell drops to nothing. Poor conditions, flat spells – leave the board in the car.
The Big Swell Hits (Sept 21st)
Monday the 21st is a monster – a huge 23ft swell from the east with a 14-second period. The combined energy is an insane 36,513. Even though the wind is cross-onshore and messy, the forecast explicitly says this is "too big for this break." This is strictly for the elite or the kamikaze. A reef break with that much power is a serious hazard.
The Flat Spell (Sept 22nd - 26th)
After that beast, it flat-lines again from Tuesday the 22nd through Saturday the 26th. We're talking maybe 0.3ft to 4ft of weak, onshore windswell. The energy drops to almost nothing. It's a proper lull.
The Real Standout - End of September (Sept 27th - 30th)
Now we're talking. From Sunday the 27th, the swell builds, but the real gem is Monday morning, the 28th of September.
We've got a solid 8ft groundswell from the SSE, with a very long 14-second period. The combined energy is a strong 2,736. And here's the kicker – the wind is glassy, out of the north at just 3 mph. That is a golden ticket. For a reef, that long period (over 15 seconds later in the day) can sometimes make it a bit walled-up, but with this direction and those perfect winds, it's going to be incredible for experienced surfers. This is the session to plan for. Expect crowds to be likely at this spot.
Tuesday the 29th holds a similar 10ft swell but with a light cross-onshore breeze, so not quite as clean. The energy stays high. By Wednesday the 30th, the wind picks up again, messing things up.
Bottom line: skip the first week and the blown-out giant on the 21st. The money day is the morning of September 28th at Udo Shrine. Glassy conditions with a powerful, long-period groundswell. That's your window.
Rusty.
Short Range ForecastHeavy rain (total 28mm), heaviest during Tue night. Warm (max 27°C on Tue morning, min 24°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri morning. Warm (max 27°C on Sun afternoon, min 23°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 10 | ESE 10 | ESE 9 | ESE 9 | E 14 | E 13 | E 13 | E 13 | S 11 | S 10 | S 9 | E 10 | ESE 15 | E 14 | E 14 | E 14 | E 14 | ESE 14 | E 14 | E 14 | E 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 351 | 334 | 277 | 211 | 200 | 168 | 125 | 117 | 3 | 3 | 7 | 1490 | 1877 | 5448 | 5694 | 6274 | 8563 | 10601 | 21408 | 14775 | 8498 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 8:08PM2.04m | 9:13AM1.80m | 8:32PM1.96m | 9:59AM1.67m | 8:57PM1.87m | 11:04AM1.55m | 9:26PM1.76m | 1:20PM1.50m | 10:15PM1.64m | 3:30PM1.58m | 00:21AM1.56m | 4:06PM1.68m | 2:25AM1.61m | ||||||||
Low Tide | 2:14PM0.91m | 2:44AM0.54m | 2:39PM1.08m | 3:20AM0.63m | 3:05PM1.22m | 4:04AM0.74m | 3:34PM1.35m | 5:07AM0.84m | 4:37PM1.46m | 6:49AM0.88m | 8:06PM1.46m | 8:30AM0.81m | 9:31PM1.33m | ||||||||
 |  |  | | |  |  | | | |  |  | |  |  | | | | | |  | |
 | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — |
 | — | 6:21 | — | — | 6:19 | — | — | 6:17 | — | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — |
mm | 1 | 5 | 8 | 3 | 5 | 1 | — | 1 | 4 | 5 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 27 | 28 |
Feels °C | 31 | 31 | 30 | 28 | 28 | 26 | 25 | 24 | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 23 | 24 | 22 | 22 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 13 | E 13 | E 12 | ENE 12 | S 9 | ESE 17 | ESE 15 | E 14 | E 14 | E 14 | E 14 | ESE 14 | E 14 | E 14 | E 13 |
| kJ | 351 | 334 | 277 | 211 | 177 | 119 | 125 | 117 | 73 | 14 | 7 | 157 | 1877 | 5448 | 5694 | 6274 | 8563 | 10601 | 15105 | 14775 | 8498 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | E 13 | E 14 | E 14 | E 13 | ENE 13 | SE 8 | SE 8 | S 10 | SE 8 | S 9 | S 9 | S 8 | S 9 | — | — | — | — | — | — |
| kJ | 108 | 108 | 86 | 198 | 200 | 168 | 178 | 3 | 3 | 2 | 3 | 14 | 13 | 6 | 6 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | S 7 | E 15 | E 16 | S 7 | S 7 | S 7 | — | — | S 11 | SE 8 | — | SE 8 | — | S 8 | — | — | — | — | — | — | — |
| kJ | 1 | 40 | 78 | 1 | 1 | 1 | — | — | 2 | 3 | — | 3 | — | 6 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 3 | NE 4 | NE 5 | ENE 8 | E 8 | ENE 7 | ENE 8 | ENE 9 | E 10 | E 10 | — | — | N 6 | N 6 | — | E 14 | N 8 | W 4 |
| kJ | — | — | — | 4 | 18 | 66 | 266 | 272 | 292 | 695 | 1131 | 1490 | 1508 | — | — | 98 | 112 | — | 21408 | 940 | 24 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 1 | 33 | 33 | 33 | 33 | 33 | 58 | 136 | 297 | 33 | 33 | 33 | 33 | 33 | 33 | 302 | 302 | 302 | 751 |
Best forecast wave conditions in Kyu Shu | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Udo Shrine Surf forecast
The above surf forecast table for Udo Shrine provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Udo Shrine can be found by selecting the local surf guide option on the grey menu. Our Udo Shrine 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 (Udo Shrine) 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 Udo Shrine 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.
Udo Shrine is 10 km (6 miles) from Nichinan. If you plan a holiday in Kyu Shu, look for hotels and other accommodation in Nichinan. Nichinan has rooms for a wide range of budgets as well as car hire and transport links.
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