Surf Forecasts:
Udo Shrine surf forecast from 19 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 9PM (local time) - 20ft (6.0m), 13s period, ESE swell with onshore winds.
- Most powerful swell: Wednesday 26 Aug, 9AM (local time) - 16ft (5.0m), 17s period, SE swell with 14,800 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 2.5ft (0.8m), 8s 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 Thursday (Aug 20) at 3AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.5m and 5s. 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 5.0m 17s and forecast to arrive on Wednesday (Aug 26) 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 0.5m 6s period and expected on Thursday (Aug 20) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 20th Aug) | 2.5ft (0.8m) 8s |
| Best Surf | 9PM (Wed 26th Aug) | 20ft (6.0m) 13s |
| Most Powerful | 9AM (Wed 26th Aug) | 16ft (5.0m) 17s |
Table - best surf conditions forecast for Udo Shrine over the next 16 days.
The Lowdown
Right, folks, Rusty here. Let’s have a look at what’s coming up for Udo Shrine. Honestly, what a tough stretch we’re looking at. The whole 16-day window is a battle, with no real standouts at all. The first few days are a write-off, and the persistent cross-onshore or onshore wind just ruins anything that tries to show up. There’s a big gap of nothing but poor surf until the very end of the first week, and even then, it’s a struggle.
Alright, starting from Wednesday the 19th of August, it’s a no-go. We’ve got a risk of thunderstorms, a cross-onshore wind from the east at 9 mph, and a messy 3 ft swell from the east at a short 8 seconds. The combined energy is weak (152), and the water is a warm 84°, which is about average for the time of year. Not worth paddling out for.
Thursday the 20th and Friday the 21st follow the same pattern. Thursday morning is clear but the wind is onshore, and the swell is tiny. Friday sees a slight bump to 4 ft from the south, but it’s still cross-onshore and marginal. The combined energy picks up a bit to 238, but the quality is just not there.
Saturday the 22nd and Sunday the 23rd are clear, but the wind stays onshore, and the swell holds around 3 ft to 4 ft. The combined energy on Sunday morning hits 281, but it’s still poor. The wind is just a constant issue.
Monday the 24th of August is a bit of a tease. The swell builds to 4 ft from the ESE with a very long 15-second period, and the combined energy jumps to 913 – that’s moderate energy. But the wind is onshore from the ENE at 12 mph, so it’s all blown out. That long period groundswell would be magic at a point or reef, but with the wind on it, it’s a mess.
Tuesday the 25th of August gets ugly. The swell jumps to 8 ft to 10 ft from the SE with a very long 16-second period. The combined energy is massive (3294 to 4007). But the wind is a cross-onshore from the NE at 16 to 19 mph. This is expert-level swell size, over 8 ft, but the wind is just ruining it. The quality is poor, so it’s not recommended.
The rest of the week is a stormy mess. Wednesday the 26th of August has a near-gale from the NE at 31 mph and a 16 ft swell. The combined energy is off the charts (14927). That’s not surfing, that’s survival. The setup looks more interesting for kite surfing than paddle surfing. Thursday the 27th and Friday the 28th are still hammered by gale-force winds and big, messy swell.
We finally get a glimmer on Saturday the 29th of August. The swell drops to 7 ft from the south, and the wind shifts to a cross-off from the south at 16 mph. The report says “clean” for the afternoon. The combined energy is still a solid 1141. This is the only day in the whole window where the conditions are marginally okay for an intermediate surfer, given the 7 ft size. But the break is inconsistent, and the crowds are often there. It’s the best of a bad bunch.
Sunday the 30th of August is back to cross-onshore wind and a dropping swell. The rest of the period through to Thursday the 3rd of September is a repeat of the same story: onshore or cross-onshore wind, and significant swell that’s just blown to pieces. The combined energy stays in the hundreds to thousands, but the wind never lets up. There’s nothing to recommend here.
So, to wrap it up: the only real window of opportunity is the afternoon of Saturday the 29th of August. It’s a long way off, but if the forecast holds, it might be your only shot for a clean wave. But with the inconsistency and the crowds, don’t get your hopes too high. The rest of this 16-day run is a write-off.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Wed afternoon. Warm (max 28°C on Wed afternoon, min 26°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Sat afternoon, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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 8 | E 8 | SSE 8 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 10 | SE 13 | ESE 15 | SE 16 | SE 16 | SE 15 | SE 16 |
Wave Graph | ||||||||||||||||||||
112 | 82 | 92 | 173 | 220 | 194 | 188 | 192 | 198 | 198 | 186 | 183 | 129 | 153 | 202 | 711 | 636 | 3137 | 3804 | 6072 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | glassy | on | on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:55PM1.86m | 11:45AM1.51m | 10:29PM1.78m | 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 | ||||||||
Low Tide | 3:49PM1.13m | 4:58AM0.81m | 4:22PM1.30m | 6:09AM0.87m | 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 | |||||||
— | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | |
6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | |
mm | 3 | 4 | — | — | 2 | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 4 |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 32 | 31 | 32 | 31 | 32 | 32 | 31 | 31 | 31 | 30 | 31 | 31 | 29 | 29 | 28 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 5 | E 8 | SSE 8 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 10 | S 10 | ESE 15 | SE 16 | SE 16 | SE 15 | SE 16 |
10 | 82 | 92 | 173 | 220 | 194 | 188 | 192 | 198 | 198 | 186 | 183 | 129 | 153 | 202 | 711 | 636 | 3137 | 3804 | 6072 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SSE 5 | E 8 | E 8 | E 8 | E 7 | E 7 | E 9 | E 9 | E 9 | E 9 | E 10 | E 11 | E 10 | SE 13 | SSE 10 | SE 13 | S 9 | E 12 | E 14 |
26 | 15 | 60 | 58 | 34 | 16 | 8 | 39 | 40 | 39 | 41 | 48 | 119 | 135 | 202 | 160 | 394 | 42 | 101 | 65 | |
Swell 3 Height (m) Direction Period (s) | S 7 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | ESE 11 | E 14 | E 13 | SE 14 | SE 12 | E 10 | E 10 | SE 6 | E 12 | SSW 9 | ENE 11 |
4 | 25 | 25 | 25 | 26 | 28 | 30 | 30 | 31 | 23 | 33 | 50 | 29 | 122 | 96 | 48 | 49 | 43 | 26 | 40 | |
Wind waves Height (m) Direction Period (s) | E 8 | S 6 | — | — | — | — | — | — | — | — | — | — | — | — | SE 5 | ESE 5 | — | ESE 6 | E 6 | — |
112 | 15 | — | — | — | — | — | — | — | — | — | — | — | — | 28 | 42 | — | 72 | 76 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 342 | 13 | 33 | 324 | 13 | 33 | 33 | 0 | 33 | 33 | 13 | 69 | 324 | 33 | 87 | 342 | 33 | 33 | 297 | 94 |
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.











