Udo Shrine Surf Break

Lat Long: 31.63° N 131.46° E

Udo Shrine Surf Forecast and Surf Report

Issued: 2 am 19 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 19 Aug 2026:

  • Best quality surf: Friday 21 Aug, 6AM (local time) - 4ft (1.2m), 9s period, S swell with glassy winds.
  • Most powerful swell: Wednesday 26 Aug, 9AM (local time) - 16ft (5.0m), 17s period, SE swell with 13,371 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 12AM (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 12AM. 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 7s period and expected on Thursday (Aug 20) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 20th Aug)2.5ft (0.8m) 8s
Best Surf 6AM (Fri 21st Aug)4ft (1.2m) 9s
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

Alright folks, Rusty here. Let’s get into it.

Right off the bat, I gotta be straight with you – the next week and a half is a write-off for Udo Shrine. That reef is pretty inconsistent at the best of times, and we’re looking at a solid 10-day stretch of poor surf conditions. The onshore and cross-onshore winds are just relentless, and the swell is either too weak or completely messy. The combined wave energy is weak to moderate at best, with numbers like 148 to 417 (weak to moderate) for the first week, so it’s not even worth paddling out for. The water temp is sitting at a warm 83.7°F (normal for the time of year), but that’s about the only thing that’s friendly.

The real action, if you can call it that, doesn’t even start until Tuesday, August 25th, when a big, long-period groundswell rolls in from the SE with a 16-second period. The combined energy jumps to 2769 (strong), and the swell is hitting 7.5 ft in the morning. But here’s the kicker – the wind is cross-onshore and the waves are going to be choppy and messy. That’s expert-only territory, and even then, it’s a gamble. The following days get even bigger, with a 16.4 ft to 19.7 ft SE swell on the 26th and 27th, but the wind is strong and onshore, making it a total washing machine. That’s kite surfing weather, not paddle surfing.

The only faint glimmer of hope comes right at the end of the forecast. On Tuesday, September 1st, we finally get some clean, cross-offshore winds from the SSW, and the swell is a solid 8.2 ft from the ESE with a 14 to 16-second period. The combined energy is 2914 to 3449 (strong). This is a real groundswell, and it’s going to be big and powerful. For a reef like Udo, that means proper waves, but it’s definitely for experienced surfers only. The wind is clean, which is a major plus. Then, on Wednesday, September 2nd, it drops to a more manageable 4.6 ft from the E (11-second period, 781 combined energy) with light WNW cross-offshore winds. That’s the best-looking, most accessible window for the whole 16 days, and it’s two weeks out, so keep an eye on it.

So, if you’re patient, the standout is the morning of Tuesday, September 1st, and the morning of Wednesday, September 2nd. The first one is a big, powerful groundswell with clean wind, and the second is a smaller, cleaner day that’s more suited to a standard intermediate session. Everything else until then? Leave it. The combination of inconsistent breaks, strong onshore winds, and messy swell means it’s a long wait for something decent.

Stay patient, and keep your board waxed for that first week of September.

Short Range Forecast

Moderate rain (total 11mm), heaviest on Wed afternoon. Warm (max 28°C on Wed morning, min 26°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sun night. Warm (max 28°C on Sat morning, min 25°C on Mon night). Wind will be generally light.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
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
1
0
0
1
0
0
1
1
0
1
0
0
0
0
0
2
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
E
8
0.9
E
8
0.8
E
8
0.8
SSE
8
1
SSE
9
1.2
S
9
1.1
S
9
1.1
S
9
1.1
S
9
1.1
S
9
1.3
S
10
1.1
S
9
1
S
10
1
S
10
1.1
S
11
1.1
S
10
0.8
SSW
10
1.4
SE
14
2.3
SE
16
2.5
SE
16
3.5
SE
16
Wave Graph
Metric surfscale
Energy kJ
112
112
84
92
173
220
194
194
192
189
307
198
204
190
279
252
136
752
2578
3283
5677
Wind (km/h)
15
ENE
15
E
5
ESE
10
NE
15
E
5
ESE
10
ESE
15
ESE
5
SSE
10
ENE
15
ESE
10
E
15
NE
15
E
10
E
15
ENE
15
E
10
NNE
20
NNE
25
NE
30
NNE
Wind State
on
on
glassy
on
cross-on
cross-on
cross-on
cross-on
cross
on
cross-on
on
on
cross-on
cross-on
on
on
cross-on
cross-on
on
cross-on
High Tide
10:30AM1.62m
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
thunderstorm
thunderstorm
thunderstorm
clear
clear
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
part cloud
clear
thunderstorm
thunderstorm
clear
clear
part cloud
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:41
5:41
5:41
5:43
5:43
5:43
5:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:51
6:49
6:47
6:46
 mm
2
3
3
2
1
1
2
1
Temp °C
28
28
27
28
28
27
28
28
27
28
28
27
28
28
27
28
28
26
27
28
27
Feels °C
31
31
32
31
31
32
32
31
32
31
31
31
31
30
30
31
30
29
28
28
26
  • Map Icons:
  • Break
  • 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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