Surf Forecasts:
Udo Shrine surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 9PM (local time) - 4.5ft (1.4m), 12s period, E swell with glassy winds.
- Most powerful swell: Monday 10 Aug, 12AM (local time) - 6ft (1.9m), 13s period, E swell with 1,303 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 9PM (local time) - 4.5ft (1.4m), 12s period with E 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 Monday (Aug 10) at 9PM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 1.2m and 10s. 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 1.9m 13s and forecast to arrive on Monday (Aug 10) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 10s period and expected on Wednesday (Aug 12) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 10th Aug) | 4.5ft (1.4m) 12s |
| Best Surf | 9PM (Mon 10th Aug) | 4.5ft (1.4m) 12s |
| Most Powerful | 12AM (Mon 10th Aug) | 6ft (1.9m) 13s |
Table - best surf conditions forecast for Udo Shrine over the next 16 days.
The Lowdown
Alright, here’s the same story in feet and miles per hour.
We’re talking Udo Shrine, a reef break. Water temp is a warm 84°F, about normal for the season.
The first few days are a dud. Sunday the 9th and Monday the 10th have onshore winds and just poor, marginal surf. Don’t bother.
Then Tuesday the 11th is the one to go for. We’ve got a clean 4ft swell from the east, with a 12-second period giving it some weight. The wind is what makes it special: Tuesday morning is totally glassy, dead calm. That’s rare for an exposed reef. The wave energy is strong at 739. Expect clean, lined-up waves. Tuesday afternoon stays clean with light offshore winds, still around 4ft. Crowds are often here, so you won’t be alone.
Wednesday the 12th through the weekend is flat and ugly. Swell drops under 3ft, wind goes cross-onshore, and energy falls into the weak zone (down to 51-178). Not worth a session.
Second week, there’s a small window on Sunday the 16th with a 4ft east swell and a building period, but it’s crosswind and only marginal. Skip it.
The big stuff comes late in the month. On August 22nd, we see a solid 8ft to 8ft SSE swell with a 12-second period, energy at 1591-1799. That’s expert-only territory on a reef. Then the 23rd hits with 12ft from the SE, period dropping to 10 seconds, energy at 2782—massive. But the wind is onshore or cross-onshore both days, so it’ll be rough and not clean. Still, there’s a lot of power in the water.
Best call is still Tuesday August 11th—clean, glassy, fun. The big late-month swell is promising but far out and winds are iffy. We’ll see.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Sun afternoon. Warm (max 28°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Wed afternoon, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 14 | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 | S 10 | S 10 | S 10 | S 9 | S 9 | E 10 | S 9 | S 9 | S 8 | S 9 | S 9 | S 10 | E 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 626 | 1303 | 976 | 678 | 566 | 480 | 384 | 202 | 158 | 154 | 108 | 79 | 96 | 78 | 74 | 51 | 74 | 71 | 89 | 239 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | glassy | glassy | cross-off | cross-off | cross-on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | off | glassy | cross | off |
High Tide | 4:41PM1.80m | 3:02AM1.86m | 5:29PM1.93m | 4:13AM1.97m | 6:07PM2.01m | 5:10AM2.09m | 6:41PM2.06m | 5:59AM2.16m | 7:12PM2.09m | 6:45AM2.18m | 7:42PM2.09m | 7:28AM2.14m | 8:10PM2.07m | |||||||
Low Tide | 9:49PM1.38m | 10:18AM0.32m | 10:51PM1.26m | 11:12AM0.18m | 11:36PM1.12m | 11:58AM0.11m | 00:16AM0.97m | 12:39PM0.10m | 00:55AM0.83m | 1:17PM0.18m | 1:32AM0.73m | 1:52PM0.32m | 2:09AM0.67m | |||||||
 |  |  | |  |  | | | |  |  | | | | | | | | | | |
 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — |
 | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — |
mm | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 28 | 27 |
Feels °C | 29 | 29 | 30 | 31 | 32 | 31 | 30 | 29 | 27 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 29 | 30 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | S 11 | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 | E 11 | S 10 | ENE 10 | ENE 10 | ENE 10 | S 9 | S 9 | S 9 | ENE 9 | ENE 11 | E 10 | E 10 | E 10 |
| kJ | 526 | 1303 | 976 | 678 | 566 | 480 | 384 | 238 | 158 | 352 | 231 | 106 | 78 | 78 | 74 | 90 | 202 | 216 | 216 | 239 |
Swell 2 Height (m) Direction Period (s) | E 14 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | ESE 13 | S 10 | S 9 | S 9 | E 10 | E 10 | E 9 | S 8 | S 9 | S 9 | S 10 | S 9 |
| kJ | 626 | 394 | 282 | 277 | 288 | 242 | 244 | 202 | 16 | 154 | 108 | 79 | 96 | 65 | 43 | 51 | 74 | 71 | 89 | 78 |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 15 | SW 12 | SW 11 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | SW 10 | ESE 13 | SE 12 | SE 12 | SE 12 | ENE 5 | ENE 11 | ENE 5 | ESE 10 | ESE 10 | ESE 9 | ESE 12 |
| kJ | 9 | 8 | 23 | 20 | 18 | 17 | 17 | 17 | 4 | 16 | 6 | 6 | 6 | 5 | 24 | 5 | 42 | 55 | 50 | 15 |
Wind waves Height (m) Direction Period (s) | ESE 8 | — | ESE 7 | — | — | — | — | — | ENE 10 | NNE 5 | — | — | ENE 6 | — | — | — | — | — | — | — |
| kJ | 345 | — | 41 | — | — | — | — | — | 427 | 21 | — | — | 6 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 213 | 33 | 33 | 33 | 0 | 0 | 0 | 0 | 5 | 33 | 0 | 1 | 33 | 0 | 1 | 324 | 0 | 0 | 324 | 0 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Udo Shrine surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest