Shida Surf Break

Lat Long: 35.33° N 140.40° E

Shida Surf Forecast and Surf Report

Issued: 2 am 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shida sea temperature is
26.4° C
0.2° 

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


Shida surf forecast from 9 Aug 2026:

  • Best quality surf: Wednesday 12 Aug, 9AM (local time) - 4ft (1.2m), 10s period, E swell with cross-offshore winds.
  • Most powerful swell: Monday 10 Aug, 12PM (local time) - 8ft (2.5m), 12s period, ENE swell with 1,774 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 9AM (local time) - 4ft (1.2m), 10s period with E swell.

Best Forecast Surf Conditions for Shida this week:

The surf forecast for Shida over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 9AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.6m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Shida in the next 16 days are 2.5m 12s and forecast to arrive on Monday (Aug 10) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Tuesday (Aug 11) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Wed 12th Aug)4ft (1.2m) 10s
Best Surf 9AM (Wed 12th Aug)4ft (1.2m) 10s
Most Powerful12PM (Mon 10th Aug)8ft (2.5m) 12s

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


The Lowdown

Right then. Rusty here. Let’s have a look at what we’ve got on the cards for Shida.

Honestly, the next couple of weeks are a bit of a mixed bag. There’s some solid swell energy early on, but the wind is going to be a pain in the backside, making things messy. We’re looking at a long wait for any real clean conditions, and even then, it’s not going to be pumping. The water temp is sitting at 80°, which is pretty much bang on average for this time of year, so no need for a thick wetsuit.

The first real chance for a wave at Shida doesn't come until Tuesday, the 11th of August. Monday is a write-off with a solid 7ft east swell but strong cross-onshore winds making it a choppy, ugly mess. Tuesday morning is still blown out with onshore wind, but by Tuesday afternoon, the wind eases and swings to the west, giving us a light cross-shore breeze. The swell drops to 6ft from the east with a 12-second period. The energy is still significant at (1191), but the wind is light, so it might clean up a bit. It’s still only a 3/10 call though – very marginal.

Wednesday the 12th of August morning is a standout, but don’t get too excited. We’ve got a clean 4ft east swell with a light cross-offshore breeze from the southeast. The energy is much weaker at (346), and the period is a short 10 seconds, so it won’t have much grunt. It’s the cleanest we’ll see for a while, but it’s small and inconsistent, as this break can be. Expect the occasional fun little wave if you’re on a groveler.

From there, it’s a grim stretch. Thursday the 13th through Sunday the 16th is all poor surf with onshore winds and lumpy conditions. Swell sticks around 5ft to 7ft but it’s all cross-on and choppy – not worth paddling out for.

Things start to look a little better on Monday the 17th of August. The swell drops to 6ft from the east-northeast, and we get a light cross-shore wind on Monday morning. Still only marginal (2/10), but the wind is light, so it might have some cleanish moments. Tuesday the 18th of August is another window with a clean 4ft east swell and light cross-offshore winds. Again, it’s small and the energy is low (325), but it’s surfable.

The best on offer across the whole run is probably Sunday, the 23rd of August. We get a moderate offshore breeze from the south, and the swell is a tiny 2ft from the east, but the period stretches out to 13 seconds – that’s a long-period groundswell. The energy is still weak (209), but with clean, offshore conditions, those little lines could hold up on the right bank. It’s not a day for big waves, but for a clean, small-wave session on a longboard, it’s your best bet. It’s far out, so keep an eye on it.

Bottom line: It’s a long, frustrating forecast with a lot of blown-out days. Don’t bother with the first week unless you’re desperate for a paddle. The only real hope is that late window around the 23rd. It’s not going to be epic, but it’ll be clean.

Rusty.

Short Range Forecast

Heavy rain (total 43mm), heaviest during Tue afternoon. Warm (max 27°C on Mon morning, min 22°C on Mon night). Winds decreasing (fresh winds from the NNE on Mon night, light winds from the ENE by Wed afternoon).

Days 4-6 Weather Summary

Heavy rain (total 36mm), heaviest during Sat morning. Warm (max 27°C on Thu morning, min 22°C on Sat night). Winds increasing (light winds from the ENE on Fri night, fresh winds from the NE by Sat afternoon).

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
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
0
0
3
2
2
1
0
0
0
0
0
1
2
0
0
0
0
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)
2.2
E
12
2.2
E
11
2.3
ENE
10
2.2
E
12
1.7
E
12
1.8
E
11
1.2
E
10
1.2
E
9
1.3
E
9
1.5
E
9
1.6
E
10
1.7
E
10
1.8
E
10
1.7
E
10
2.1
ENE
10
2.2
ENE
10
2.1
ENE
10
1.7
E
10
1.7
E
10
1.8
E
9
1.7
E
9
Wave Graph
Metric surfscale
Energy kJ
1344
1213
920
1319
827
790
266
235
288
390
474
592
703
592
838
874
821
539
524
539
481
Wind (km/h)
25
NNE
30
NE
30
NNE
25
N
10
W
30
S
15
SE
10
ENE
10
N
10
NE
15
NE
15
NNW
20
NNE
15
NE
10
ENE
25
NE
25
NE
35
N
40
N
35
NNW
30
WNW
Wind State
cross-on
cross-on
on
on
cross
off
cross-off
cross-on
on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
High Tide
4:13PM1.35m
1:26AM1.41m
4:39PM1.40m
2:34AM1.47m
5:03PM1.43m
3:31AM1.51m
5:26PM1.45m
4:22AM1.52m
5:48PM1.46m
5:10AM1.49m
6:09PM1.47m
5:56AM1.42m
6:30PM1.47m
Low Tide
8:39PM1.13m
9:10AM0.04m
9:28PM1.03m
9:55AM0.01m
10:09PM0.91m
10:34AM0.04m
10:48PM0.78m
11:09AM0.11m
11:26PM0.65m
11:41AM0.23m
00:04AM0.55m
12:10PM0.38m
00:42AM0.48m
clear
part cloud
part cloud
cloud
heavy rain
heavy rain
rain showers
thunderstorm
part cloud
thunderstorm
clear
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
part cloud
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:54
4:54
4:54
4:56
4:56
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:34
6:31
6:30
6:30
6:29
6:28
6:27
 mm
20
15
6
2
2
2
5
13
4
10
1
2
Temp °C
27
26
23
26
22
24
26
26
25
27
27
25
27
27
26
25
25
24
25
23
23
Feels °C
26
24
21
24
23
24
28
28
27
28
28
27
29
30
29
25
25
22
22
19
23
  • 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 Shida Surf forecast

The above surf forecast table for Shida provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shida can be found by selecting the local surf guide option on the grey menu. Our Shida 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 (Shida) 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 Shida 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.

Shida is 9 km (6 miles) from the city of Ohara. If you plan a holiday in Chiba, look for hotels and other accommodation in Ohara. Ohara has rooms for a wide range of budgets as well as car hire and transport links.

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