Udo Shrine Surf Break

Lat Long: 31.63° N 131.46° E

Udo Shrine Surf Forecast and Surf Report

Issued: 8 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Udo Shrine sea temperature is
28.7° C
0.2° 

Udo Shrine surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Udo Shrine surf forecast from 20 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 9PM (local time) - 23ft (7.0m), 14s period, E swell with cross-onshore winds.
  • Most powerful swell: Wednesday 26 Aug, 12AM (local time) - 25ft (7.5m), 14s period, E swell with 22,936 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 9PM (local time) - 3.5ft (1.1m), 9s period with S 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 9PM. The primary swell is predicted to be 1.1m and 9s period. 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 7.5m 14s and forecast to arrive on Wednesday (Aug 26) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 7.5m 14s period and expected on Wednesday (Aug 26) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 20th Aug)3.5ft (1.1m) 9s
Best Surf 9PM (Tue 25th Aug)23ft (7.0m) 14s
Most Powerful12AM (Wed 26th Aug)25ft (7.5m) 14s

Table - best surf conditions forecast for Udo Shrine over the next 16 days.


The Lowdown

Alright, let’s get this straight. I’m looking at Udo Shrine (Japan) and the truth is, we’ve got a long stretch of pretty ordinary conditions ahead. The water is sitting at 84°F, which is about average for this time of year, so at least you won’t need a thick wetsuit.

For the next few days, through Thursday the 20th and into the weekend, we’re looking at small, weak swells in the 3ft to 4ft range from the SSE or S, with periods around 8 to 9 seconds. The combined energy is low, under 256 (weak), and the wind is mostly light cross-onshore, which is just enough to mess up the surface. It’s poor surf, plain and simple.

There’s a bit of a tease on Sunday the 23rd afternoon – the swell drops to 2ft but the period jumps to 16 seconds from the SE, giving a moderate energy of 427 (moderate). Still, with onshore wind and poor conditions, it’s not worth paddling out.

Now, Monday the 24th is where things get interesting, but you need to be experienced. We’ve got a solid 7ft to 8ft ESE groundswell rolling in with a 17-second period. That’s a very long period, meaning proper energy and shape, but it’s going to be too big for beginners and will break straight at beach breaks. The combined energy is strong, hitting 2,453 and 3,305 (strong). Winds are light onshore, so it’s not glassy, but it’s the best on offer across the whole 16 days. This is your standout: Monday morning and afternoon, Udo Shrine, with overhead sets and that long-period punch. Crowds are often here, so expect company.

But don’t get too excited. Tuesday the 25th we see a massive 15ft to 16ft ESE swell with 16-17 second periods, energy over 10,000 (very strong). This is only for experts, and the wind cranks up to 19-25 mph cross-onshore, making it lumpy and messy. By Wednesday the 26th, it’s even worse – gale force winds at 40 mph, 18ft E swell, completely blown out. This is more kite-surfing territory.

The rest of the 16 days tanks. From Thursday the 27th onward, we’re back to tiny, weak swells (1.0ft to 4ft), mostly cross-onshore or cross-shore winds, and poor to marginal conditions. There’s a gap of poor surf from the 27th right through to the 4th of September. The only glimmer is on Friday the 4th of September morning, where we get a clean, light cross-offshore wind from the W, but the swell is only 1ft from the S with 8-second period – barely a ripple.

Bottom line: Monday the 24th is your one true chance for a proper session at Udo Shrine, but it’s for experienced surfers only. The rest is a write-off.

Rusty

Short Range Forecast

Light rain (total 3mm), mostly falling on Fri afternoon. Warm (max 28°C on Thu morning, min 26°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 85mm), heaviest during Tue night. Warm (max 28°C on Sun morning, min 25°C on Tue night). Winds increasing (light winds from the E on Sun night, severe gales from the NNE by Tue night).

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
1
0
1
0
0
0
0
0
2
1
0
0
0
0
!
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSE
8
1
SSE
9
1.2
S
9
1.1
S
9
1
S
9
0.9
S
9
0.8
S
8
0.7
S
8
0.7
S
9
0.7
S
9
0.7
E
11
0.9
ESE
15
1.9
ESE
17
2.3
ESE
16
3.5
ESE
16
5
ESE
16
5
ESE
16
7.5
E
14
5.5
E
13
1.4
E
13
1.2
ESE
12
Wave Graph
Metric surfscale
Energy kJ
92
173
220
194
155
126
89
69
73
78
119
409
2065
2904
6103
12021
12836
22936
9321
690
404
Wind (km/h)
10
NE
10
E
5
NNE
10
NE
15
ESE
0
NE
15
ENE
15
ESE
10
E
15
NE
15
ENE
10
NE
20
ENE
25
NE
25
NNE
35
NNE
45
NNE
85
NNE
85
NNW
50
NNW
20
WSW
Wind State
cross-on
cross-on
glassy
cross-on
cross-on
glassy
on
cross-on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
off
High Tide
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
4:38AM1.90m
6:05PM1.95m
Low Tide
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
11:24AM0.40m
11:39PM1.02m
clear
clear
clear
clear
thunderstorm
clear
clear
thunderstorm
clear
clear
clear
rain showers
clear
clear
part cloud
part cloud
thunderstorm
heavy rain
heavy rain
heavy rain
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:41
5:41
5:43
5:43
5:43
5:43
5:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:51
6:49
6:47
6:46
6:45
 mm
2
1
1
4
80
122
18
Temp °C
28
28
27
28
28
27
28
28
27
28
28
27
28
28
27
27
27
26
26
28
27
Feels °C
32
32
32
32
31
32
31
31
32
30
31
31
29
29
28
26
24
16
15
26
27
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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