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, 9AM (local time) - 5.5ft (1.7m), 13s period, E swell with 986 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 1.7m 13s and forecast to arrive on Monday (Aug 10) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 12s period and expected on Wednesday (Aug 12) at 12PM.
| 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 | 9AM (Mon 10th Aug) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Udo Shrine over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s coming up for Udo Shrine.
First up, the week ahead is a bit of a mixed bag. The water temp is sitting at 84°, which is pretty much bang on average for this time of year, so no surprises there.
Monday the 10th kicks off with some chest-high easterly swell around 6ft, but that east wind blowing onshore is messing it up. The wave energy is pumping at (1291), but the conditions are marginal – not the one to get excited about.
Tuesday the 11th is where we see a brief bright spot. The morning session looks clean with a glassy NE breeze and 4ft of east swell. The wave energy drops to (739) but the clean surface makes it worthwhile for a paddle. By the afternoon, a light south cross-off keeps it tidy, though the swell eases to 4ft. This is the best of the early week.
From Wednesday the 12th right through to Thursday the 20th of August, the surf goes quiet. We’re looking at a long stretch of small, weak waves – mostly below 3ft – with messy winds and poor conditions. Wave energy drops right off into two-digit numbers (92, 68, 65), so it’s not worth getting wet unless you’re desperate for a float. There’s a few glassy mornings but the swell just isn’t there.
Now, looking further out, Friday the 21st of August shows some promise. We get a bump in swell to 5ft from the SSE with a clean cross-off breeze. Wave energy climbs back to (332). It’s not huge, but the conditions look good and the break should be workable.
Saturday the 22nd of August is the standout. Morning has a glassy WSW wind, dead calm, with 4ft of south swell. That’s going to be clean and fun for an intermediate. The wave energy is (245) – not massive, but with perfect conditions, this is the one to circle on the calendar. The afternoon still holds up but a light cross-shore comes in.
After that, we taper off into smaller, weaker surf through the end of the period. Monday the 24th has a tiny 1ft east swell with clean offshore wind, but it’s just too small to get excited about.
Bottom line: Tuesday the 11th morning is your early call, but the real standout is Saturday the 22nd morning – glassy, clean, and chest-high. That’s the session to plan for.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue night. Warm (max 28°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Thu afternoon, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 13 | E 12 | E 12 | E 12 | E 12 | E 11 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | E 10 | S 8 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 986 | 678 | 566 | 480 | 384 | 286 | 154 | 151 | 108 | 78 | 78 | 71 | 94 | 68 | 104 | 102 | 99 | 59 | 68 | 66 | 95 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | glassy | cross-off | cross-off | cross-on | cross | off | glassy | cross | cross | on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | on | glassy |
High Tide | 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 | 8:11AM2.04m | 8:36PM2.04m | ||||||||
Low Tide | 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 | 2:24PM0.52m | 2:46AM0.65m | |||||||
 | |  |  |  |  | | | | | |  | | | | | | | | | | |
 | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — |
 | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — |
mm | — | — | — | — | — | 1 | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 27 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 28 | 26 |
Feels °C | 30 | 32 | 32 | 31 | 30 | 30 | 28 | 27 | 29 | 29 | 28 | 28 | 30 | 30 | 29 | 30 | 28 | 29 | 29 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 12 | E 12 | E 12 | E 12 | E 11 | ENE 10 | ENE 11 | ENE 11 | S 9 | ENE 10 | S 9 | E 10 | ENE 10 | E 11 | E 11 | E 11 | E 10 | ENE 10 | ENE 10 | E 10 |
| kJ | 986 | 678 | 566 | 480 | 384 | 286 | 331 | 463 | 263 | 78 | 102 | 71 | 94 | 136 | 238 | 229 | 229 | 216 | 167 | 214 | 200 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | ENE 10 | S 9 | E 10 | S 8 | S 8 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | SE 11 |
| kJ | 282 | 277 | 294 | 242 | 200 | 202 | 154 | 151 | 108 | 108 | 78 | 67 | 69 | 68 | 104 | 102 | 99 | 59 | 68 | 66 | 19 |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 11 | ESE 14 | ESE 13 | ESE 13 | NNE 5 | ENE 12 | ESE 13 | SE 12 | ESE 12 | ESE 12 | ENE 6 | ENE 6 | ENE 6 | ESE 11 | SE 11 | SE 11 | ESE 12 | SE 12 | SE 12 | SE 11 |
| kJ | 23 | 20 | 18 | 17 | 17 | 2 | 157 | 16 | 6 | 14 | 14 | 14 | 7 | 3 | 12 | 18 | 18 | 15 | 22 | 21 | 19 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SW 3 | NNE 5 | — | — | — | — | — | — | — | — | — | — | S 5 | — | — | S 9 |
| kJ | — | — | — | — | — | 3 | 51 | — | — | — | — | — | — | — | — | — | — | 11 | — | — | 95 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 33 | 33 | 0 | 0 | 0 | 0 | 1 | 614 | 0 | 0 | 628 | 15 | 28 | 324 | 0 | 28 | 342 | 0 | 1 | 322 | 0 |
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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