
Surf Forecasts:
Udo Shrine surf forecast from 7 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 3AM (local time) - 4.5ft (1.3m), 12s period, E swell with glassy winds.
- Most powerful swell: Friday 7 Aug, 6PM (local time) - 18ft (5.5m), 12s period, SE swell with 8,785 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 3AM (local time) - 4.5ft (1.3m), 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 Tuesday (Aug 11) at 3AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 1.3m and 11s. 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 5.5m 12s and forecast to arrive on Friday (Aug 07) 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 1.3m 12s period and expected on Friday (Aug 14) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 11th Aug) | 4.5ft (1.3m) 12s |
| Best Surf | 3AM (Tue 11th Aug) | 4.5ft (1.3m) 12s |
| Most Powerful | 6PM (Fri 7th Aug) | 18ft (5.5m) 12s |
Table - best surf conditions forecast for Udo Shrine over the next 16 days.
The Lowdown
Alright, let’s talk about what’s on offer for Udo Shrine. This is a reef break that’s pretty exposed, and it rarely lines up. When it does, it’s for intermediates, but the crowds can be a factor because it’s well-known. The water temp is sitting at 84°F, which is about average for this time of year, so no surprises there.
The 16-day window kicks off with a massive dose of energy. On Friday, August 7th, we’ve got a serious 23ft SE swell rolling in, with a period of 14 seconds – that’s proper groundswell, and the combined energy is a huge 17020 (very strong). But here’s the kicker: that’s way too big for this break. The wind is a screaming 28 mph onshore from the east, and it’s just not going to be rideable. It’s a write-off. The afternoon drops to 15ft, but still onshore and messy.
Saturday, August 8th, is still a no-go. The swell is 12ft to 10ft, with cross-onshore winds at 22 mph, and the period drops to 9 seconds. It’s lumpy and poor. Sunday, August 9th, starts with 8ft onshore and 16 mph winds, then eases to 6ft by the afternoon with lighter winds, but it’s still marginal at best. The energy is moderate (1292 to 1255).
Monday, August 10th, sees the swell drop to 6ft to 5ft, with a 13-second period, which is a decent long period, but the wind is still onshore at 12 mph. It’s only marginal. The energy is still moderate (1646 to 1101).
Tuesday, August 11th, is when things start to look a little more possible. The swell is 4ft in the morning, 4ft in the afternoon, from the east at 12 seconds, and the wind is light at 6 mph, but it’s cross-onshore. The energy is moderate (823 to 713). It’s still not great, but there’s a chance for a couple of clean ones if you pick your tide.
From Wednesday, August 12th, right through to Sunday, August 16th, the surf is pretty flat or poor. The swell stays under 4ft, and the wind is variable but mostly light. The energy drops to triple digits (246 to 98). The only flicker of hope is on Sunday, August 16th, with 5ft from the east at 12 seconds, and light cross-onshore winds. The energy is moderate (639). But it’s still marginal.
The second week is a grind. Monday, August 17th, through to Friday, August 21st, the swell runs between 3ft and 5ft, but the wind is constantly onshore or cross-onshore, and the period is short (9 to 11 seconds). The energy is moderate (281 to 614). It’s all poor surf conditions. This is not the time to get excited.
Then, right at the end of the period, on Saturday, August 22nd, we get a little miracle. The swell is tiny, only 2ft from the south, period 9 seconds, and the energy is very weak (81). But the conditions are glassy. The wind is out of the south at 3 mph, and it’s clean. This is the standout moment. For a spot that’s inconsistent, glassy conditions are pure gold. It’s not going to be big, but it’ll be rideable and fun for a longboard or a fish. The crowds will be likely, because everyone will be out for that sweet glass.
So, the best on offer is that Saturday, August 22nd morning. It’s the only real highlight in a long, mostly blown-out or flat window. The rest of the time, you’re either fighting onshore wind or staring at a wall of white water. Udo Shrine is a reef, so it can handle a bit of size, but we’ve got too much of a good thing early on, and then just nothing for days.
Rusty.
Short Range ForecastHeavy rain (total 95mm), heaviest during Sun afternoon. Warm (max 28°C on Fri morning, min 27°C on Fri night). Winds decreasing (strong winds from the E on Fri morning, light winds from the ENE by Sun afternoon). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Warm (max 28°C on Mon morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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) | SE 14 | SSE 13 | SSE 12 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 14 | E 13 | E 13 | E 12 | E 12 | E 12 | E 11 | E 11 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 |
Wave Graph | |||||||||||||||||||||
17020 | 6894 | 3549 | 1900 | 1618 | 1123 | 703 | 480 | 1440 | 1094 | 772 | 556 | 472 | 364 | 286 | 239 | 194 | 148 | 104 | 102 | 101 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | on | cross-on | cross-on | off | on | cross | glassy | on | on | on |
High Tide | 1:17PM1.59m | 00:03AM1.82m | 3:25PM1.66m | 1:32AM1.80m | 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 | ||||||||
Low Tide | 6:03PM1.33m | 7:45AM0.60m | 8:05PM1.43m | 9:10AM0.47m | 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 | ||||||||
5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | |
— | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | |
mm | 7 | 6 | 10 | 7 | 9 | 20 | 14 | 16 | 6 | — | — | — | — | — | — | — | 2 | 7 | 4 | 1 | 2 |
Temp °C | 28 | 28 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 26 | 26 | 26 |
Feels °C | 26 | 27 | 26 | 27 | 28 | 27 | 28 | 30 | 29 | 30 | 30 | 31 | 31 | 30 | 31 | 31 | 29 | 31 | 28 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | — | SSE 13 | SSE 12 | S 11 | S 11 | S 11 | S 10 | ESE 8 | E 13 | E 13 | E 12 | E 12 | E 12 | E 11 | E 11 | ENE 12 | ENE 11 | S 10 | S 9 | S 9 | S 9 |
— | 6894 | 3549 | 1169 | 743 | 449 | 320 | 480 | 1440 | 1094 | 772 | 556 | 472 | 364 | 286 | 355 | 245 | 148 | 104 | 102 | 101 | |
Swell 2 Height (m) Direction Period (s) | — | — | E 15 | E 15 | E 15 | E 14 | SSW 14 | S 11 | S 11 | S 10 | S 10 | S 11 | S 11 | S 11 | S 10 | S 10 | S 10 | ENE 10 | E 10 | E 10 | E 10 |
— | — | 17 | 17 | 17 | 37 | 165 | 326 | 449 | 353 | 247 | 344 | 344 | 332 | 259 | 239 | 194 | 106 | 74 | 71 | 70 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 16 | E 16 | E 15 | E 14 | SE 15 | SW 13 | SW 13 | ESE 14 | SE 13 | ESE 13 | ESE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | E 14 |
— | — | — | — | 5 | 5 | 104 | 449 | 8 | 199 | 82 | 18 | 7 | 17 | 17 | 7 | 6 | 6 | 6 | 5 | 34 | |
Wind waves Height (m) Direction Period (s) | SE 14 | E 11 | E 10 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | — | ESE 7 | — | — | — | — | — | — | — | — | — | — | — | — |
17020 | 3036 | 2013 | 1900 | 1618 | 1123 | 703 | — | 192 | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 812 | 801 | 709 | 310 | 371 | 213 | 213 | 248 | 213 | 67 | 322 | 13 | 28 | 33 | 0 | 28 | 310 | 0 | 33 | 310 | 33 |
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.











