Surf Forecasts:
Udo Shrine surf forecast from 21 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 3PM (local time) - 18ft (5.5m), 16s period, SE swell with cross-onshore winds.
- Most powerful swell: Tuesday 25 Aug, 6PM (local time) - 20ft (6.0m), 16s period, SE swell with 17,430 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 3PM (local time) - 18ft (5.5m), 16s period with SE 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 (Aug 25) at 3PM. The primary swell is predicted to be 5.5m and 16s period with a secondary swell of 0.4m and 15s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Udo Shrine in the next 16 days are 6.0m 16s and forecast to arrive on Tuesday (Aug 25) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Tuesday (Aug 25) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 25th Aug) | 18ft (5.5m) 16s |
| Best Surf | 3PM (Tue 25th Aug) | 18ft (5.5m) 16s |
| Most Powerful | 6PM (Tue 25th Aug) | 20ft (6.0m) 16s |
Table - best surf conditions forecast for Udo Shrine over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break it down in feet and miles. Udo Shrine is a tricky, inconsistent reef, and this forecast is a grim one for the next 16 days. Water temp is about 84°F, pretty much average for the season.
We start Friday the 21st of August with nothing – small, choppy, cross-onshore junk. That’s the story through the weekend. Come Monday the 24th, there’s a pulse of energy – a long-period groundswell from the SE at 4ft and 19 seconds, combined energy of 1165 (moderate). But it’s onshore, and the tide’s questionable. That afternoon, it jumps to 8ft SE at 17 seconds, energy up to 3639, but still onshore – no dice.
Tuesday the 25th is a monster, but not for us. Swell hits 16ft to 18ft from the SE, with a massive combined energy of 12749 to 15491 (very strong). The wind is a strong cross-onshore, and the spot simply can’t handle that size. It’s a no-go, even for experts.
From Wednesday the 26th all the way through to the end of the month, it’s just poor. Wind stays onshore or cross-onshore, swell is either too big and blown out, or too small. Energy is low to moderate, and nothing clean.
Into early September, the same pattern holds. A glimmer on Thursday the 3rd with a 7ft to 7ft E swell, but it’s cross-onshore and choppy. Friday the 4th and Saturday the 5th bring a bigger E swell (10ft, 16-second period, energy of 3796) but it’s pinned under a fresh cross-onshore, lumpy wind. No good.
There’s no standout session. The only might-have-been was Monday the 24th morning, but the wind and tide killed it. For the rest, it’s a blank. If you’re into kite surfing, the strong cross-onshore days with big messy swell could be a go. For paddle surfing? Leave it.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat night. Warm (max 28°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 56mm), heaviest during Wed morning. Warm (max 28°C on Mon morning, min 27°C on Mon morning). Winds increasing (moderate winds from the ENE on Mon morning, gales from the ENE by Tue night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | E 10 | E 11 | E 10 | SE 19 | SE 17 | SE 16 | SE 16 | SE 16 | SE 14 | SE 11 | SE 11 | SE 11 | SE 10 | SE 9 | SE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 194 | 155 | 126 | 89 | 68 | 69 | 50 | 88 | 216 | 828 | 3417 | 7122 | 12706 | 15422 | 14380 | 5914 | 3386 | 4076 | 1943 | 1058 | 542 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross | cross-on |
High Tide | 2:13PM1.49m | 11:25PM1.69m | 4:05PM1.59m | 1:09AM1.65m | 4:44PM1.70m | 2:48AM1.69m | 5:13PM1.80m | 3:51AM1.79m | 5:40PM1.88m | 4:38AM1.90m | 6:05PM1.95m | 5:17AM2.00m | 6:29PM2.01m | ||||||||
Low Tide | 5:30PM1.44m | 7:47AM0.86m | 8:18PM1.48m | 9:11AM0.77m | 9:49PM1.39m | 10:07AM0.64m | 10:34PM1.27m | 10:49AM0.51m | 11:09PM1.14m | 11:24AM0.40m | 11:39PM1.02m | 11:56AM0.34m | 00:09AM0.90m | ||||||||
 | |  |  | |  |  | |  | | | | | | | | | | | | | |
 | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — |
 | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — |
mm | — | — | — | — | — | 3 | 2 | — | — | 1 | — | — | 3 | 4 | 18 | 17 | 7 | 6 | 7 | 9 | 26 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 28 | 28 | 28 |
Feels °C | 32 | 31 | 32 | 31 | 31 | 31 | 32 | 30 | 30 | 29 | 29 | 29 | 26 | 25 | 25 | 24 | 24 | 27 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | E 10 | E 11 | E 10 | SE 19 | SE 17 | SE 16 | SE 16 | SE 16 | SE 14 | E 14 | E 19 | E 13 | SE 10 | SE 9 | SE 8 |
| kJ | 194 | 155 | 126 | 89 | 68 | 69 | 50 | 88 | 216 | 828 | 3417 | 7122 | 12706 | 15422 | 12903 | 129 | 7 | 117 | 1943 | 1058 | 542 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 9 | E 7 | E 9 | E 9 | E 9 | S 8 | SSW 8 | SE 12 | SE 13 | E 12 | E 12 | E 16 | E 15 | E 14 | E 21 | E 19 | E 18 | E 12 | E 12 | S 8 |
| kJ | 16 | 39 | 14 | 25 | 39 | 61 | 33 | 19 | 124 | 199 | 46 | 106 | 43 | 69 | 66 | 9 | 7 | 6 | 103 | 98 | 140 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | E 9 | ESE 11 | ESE 11 | E 14 | SW 9 | SE 13 | S 8 | E 10 | E 12 | — | — | — | — | — | — | E 18 | E 18 | E 16 | E 12 |
| kJ | 29 | 30 | 13 | 24 | 40 | 34 | 21 | 45 | 34 | 96 | 46 | — | — | — | — | — | — | 25 | 24 | 81 | 68 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 6 | E 3 | E 4 | ESE 5 | ESE 6 | — | ESE 5 | ESE 6 | ENE 9 | ENE 9 | ENE 7 | SE 14 | SE 11 | SE 11 | SE 11 | — | — | — |
| kJ | — | — | — | 11 | 4 | 8 | 23 | 34 | — | 42 | 130 | 49 | 16 | 633 | 14380 | 5914 | 3386 | 4076 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 33 | 33 | 13 | 33 | 324 | 33 | 33 | 324 | 33 | 94 | 371 | 33 | 213 | 371 | 213 | 625 | 625 | 627 | 213 | 342 | 213 |
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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