
Surf Forecasts:
Udo Shrine surf forecast from 5 Aug 2026:
- Best quality surf: Thursday 6 Aug, 3AM (local time) - 20ft (6.0m), 16s period, ESE swell with cross-onshore winds.
- Most powerful swell: Thursday 6 Aug, 3PM (local time) - 23ft (7.0m), 16s period, ESE swell with 25,369 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 3AM (local time) - 20ft (6.0m), 16s period with ESE 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 06) at 3AM. The primary swell is predicted to be 6.0m and 16s period. 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 7.0m 16s and forecast to arrive on Thursday (Aug 06) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 10s period and expected on Friday (Aug 07) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 6th Aug) | 20ft (6.0m) 16s |
| Best Surf | 3AM (Thu 6th Aug) | 20ft (6.0m) 16s |
| Most Powerful | 3PM (Thu 6th Aug) | 23ft (7.0m) 16s |
Table - best surf conditions forecast for Udo Shrine over the next 16 days.
The Lowdown
Alright, let’s get into it. The long-range models are showing something big and angry heading our way, but the timing is all wrong. We’ve got a massive pulse of energy coming in, but it’s hitting when the winds are going to be howling onshore. It’s a real tease, to be honest. The next 16 days are looking like a classic case of “so much potential, but don’t hold your breath.” We’re talking about a long stretch of blown-out conditions before things finally settle down.
We’re starting off with a bang on the 6th of August. The models are showing a huge swell that’s just too big and raw for Udo Shrine (Big Island). Northeast winds are going to be screaming at 31 mph, and there’s a risk of thunderstorms. The wave energy is off the charts, sitting at 36459 and then jumping to 47949. This is a beast of a swell, with 21.3ft to 23.0ft surf coming from the ESE and SE, with periods of 15 and 16 seconds. But with that near-gale cross-onshore wind, it’s going to be a complete mess. This is not a surf day; this is a “watch from the cliffs” day. The 7th of August is more of the same, with 23.0ft surf from the SE and near-gale winds, so we're still on hold.
The swell starts to ease off on the 8th and 9th, but it's still too big and rough. We're looking at 11.5ft dropping to 8.2ft, but the wind is still a strong cross-onshore breeze, which will chop it all up. It’s going to be lumpy and messy, and definitely not worth the paddle out. The energy is still moderate to strong, with values dropping from 6492 down to 3191. The following few days, from the 10th to the 11th, are more of the same, with onshore winds and poor surf quality. The energy is dropping, but the wind is just killing it. By the 11th, we're down to 7.2ft on the afternoon, but it's still cross-onshore and choppy.
We finally get a dip in the swell around the 12th, but it's too small, with only 4.3ft to 4.6ft. The energy has dropped way off to the 300-400 range, and while the winds are lighter, they are still cross-onshore. The 13th of August shows a sliver of hope, with the swell down to 3.3ft and light winds, but it's still not good enough. It’s marginal at best. The period does jump to 15 seconds on the morning of the 13th, which hints at some longer-period energy, but the size is just too small and the direction isn't right. There's a real gap in any quality surf for about a week here, from the 12th all the way through to the 18th.
The surf stays tiny for the next few days, barely scraping over 3.3ft, and with moderate onshore winds. The energy is weak, mostly in the double digits, and the whole stretch from the 13th to the 18th is just a flat, choppy, or blown-out mess. It's a real blank run. For a spot like this, that's pretty normal when the trade winds are locked in.
There is a slight bump in the swell on the 19th, with 3.9ft and a period of 9 seconds, but it's still not enough. Winds are light and cross-onshore, but it's a marginal forecast. The 20th and the 21st still look poor, with the swell staying small and the wind picking up again on the 21st. So, to sum it up, we've got a massive swell to start, but it's unsurfable, followed by a long stretch of small, messy, and blown-out conditions. There isn't a standout day in this entire window. It's a period for fixing dings and maybe getting some kitesurfing done if the wind is right, but for a clean surf, we're out of luck. Hold tight, this will change. Later this week, something might turn up, but for now, keep the board in the car and the expectations low.
Short Range ForecastHeavy rain (total 75mm), heaviest during Thu night. Warm (max 28°C on Wed night, min 27°C on Wed night). Mainly near gales. | Days 5-7 Weather SummaryHeavy rain (total 120mm), heaviest during Sun afternoon. Warm (max 28°C on Sun afternoon, min 27°C on Sat night). Winds decreasing (strong winds from the E on Sun night, light winds from the ESE by Tue afternoon). | ||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
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) | ESE 16 | ESE 15 | ESE 16 | ESE 15 | SE 14 | SSE 14 | SSE 14 | S 13 | S 13 | S 14 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | SSE 11 | SSE 11 | S 11 |
Wave Graph | |||||||||||||||||||
15570 | 19448 | 25369 | 22273 | 19862 | 11527 | 9273 | 3980 | 2917 | 2843 | 2074 | 2201 | 1738 | 2058 | 1912 | 1236 | 1520 | 1184 | 694 | |
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 10:19PM1.93m | 11:29AM1.64m | 11:02PM1.88m | 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 | |||||||
Low Tide | 5:05AM0.67m | 4:49PM1.14m | 6:17AM0.66m | 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 | |||||||
— | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | |
7:07 | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | |
mm | 3 | 4 | 5 | 15 | 9 | 6 | 16 | 8 | 9 | 17 | 8 | 14 | 20 | 10 | 12 | 19 | 9 | 11 | 17 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 28 | 25 | 25 | 25 | 25 | 26 | 26 | 28 | 28 | 26 | 26 | 27 | 27 | 28 | 28 | 28 | 30 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | ESE 15 | ESE 16 | SE 15 | SSE 14 | SSE 14 | SSE 14 | S 13 | S 13 | S 14 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | E 12 | SSE 11 | S 11 |
15570 | 17011 | 22580 | 18562 | 13733 | 11527 | 9273 | 3980 | 2917 | 2843 | 2074 | 2201 | 1738 | 2058 | 1912 | 1236 | 353 | 1184 | 694 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | E 15 | E 15 | E 15 | E 15 | E 13 | E 14 | E 13 | E 13 | E 12 | SW 12 | E 12 | E 11 |
— | — | — | — | — | — | — | 17 | 17 | 38 | 70 | 276 | 577 | 670 | 555 | 416 | 37 | 336 | 260 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SE 15 | SE 16 | SSW 18 | SSW 16 | SSW 16 | SE 14 | SE 14 | SW 12 | SE 13 |
— | — | — | — | — | — | — | — | — | — | 9 | 9 | 438 | 214 | 171 | 7 | 7 | 35 | 7 | |
Wind waves Height (m) Direction Period (s) | — | ESE 15 | ESE 16 | ESE 15 | SE 14 | E 11 | E 10 | ESE 10 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | SSE 11 | — | — |
— | 19448 | 25369 | 22273 | 19862 | 3184 | 1858 | 2495 | 2176 | 1393 | 1048 | 705 | 1216 | 728 | 640 | 537 | 1520 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 302 | 374 | 801 | 302 | 801 | 801 | 801 | 812 | 801 | 302 | 801 | 801 | 297 | 709 | 853 | 297 | 297 | 248 | 28 |
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.











