Shida Surf Break

Lat Long: 35.33° N 140.40° E

Shida Surf Forecast and Surf Report

Issued: 2 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shida sea temperature is
26.5° 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 19 Aug 2026:

  • Best quality surf: Monday 24 Aug, 9PM (local time) - 10ft (3.0m), 16s period, SSE swell with offshore winds.
  • Most powerful swell: Thursday 27 Aug, 12AM (local time) - 18ft (5.5m), 12s period, SSE swell with 9,148 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 9AM (local time) - 1.5ft (0.4m), 10s period with SE 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 Thursday (Aug 20) at 9AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.5m and 6s. Another secondary swell of 0.5m and 8s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Shida in the next 16 days are 5.5m 12s and forecast to arrive on Thursday (Aug 27) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Aug 22) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 20th Aug)1.5ft (0.4m) 10s
Best Surf 9PM (Mon 24th Aug)10ft (3.0m) 16s
Most Powerful12AM (Thu 27th Aug)18ft (5.5m) 12s

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


The Lowdown

Alright folks, Rusty here again. Let’s break it down for the local spots.

The water temp is about 80°F, which is pretty normal for this time of year – nothing to write home about.

We’re getting off to a slow start. Thursday the 20th and Friday the 21st only have tiny 1ft swell from the SE, with a short period of 10-11 seconds, and the energy is weak (between 77 and 113). The wind is light and offshore though, so it’ll be glassy if you want to get wet, but it’s super small.

Saturday the 22nd shows a little more life. The swell bumps up to 3ft-3ft from the E, period still around 11 seconds, and the energy gets into the moderate range (204-293). Saturday afternoon has a chance of thunderstorms but clean conditions. Still, it’s marginal.

Sunday the 23rd is a total loss with onshore winds and poor conditions.

Now, here’s the real deal. Monday the 24th of August is the standout. We’ve got a solid 8ft-8ft SSE groundswell with a long period of 16 seconds, pumping strong to very strong energy (3148-3665). Winds are light cross-offshore in the morning, turning gentle offshore by afternoon. This is excellent surf for experienced surfers only – the size and power are too much for beginners. The long period means the sets will be spaced out, but these waves have serious punch.

Tuesday the 25th through Thursday the 27th sees the swell blowing up to 12ft-16ft from the SSE. The winds are favorable, but this is way too big for Shida. The energy numbers are massive (up to 7016). This is strictly for experts, and even then, it might be a closeout. Watch from the sand.

Friday the 28th the swell drops to 8ft from the S/SSE, but the wind picks up strong – 30 km/h cross-off in the afternoon. It’s marginal, with energy still high (1140-2410). Might be worth a look for the experienced crew, but it’s not clean.

From Saturday the 29th through the start of September, conditions go south. Onshore winds, poor surf, and a lot of wind chop. There’s a brief window on Monday the 31st of August with a 5ft SE swell, clean offshore winds, and good energy (1215), which looks solid for experienced surfers. Tuesday the 1st of September also has a chance with 4ft-4ft S swell and light winds, but storms are a risk.

The rest of the first week of September is a mess – strong onshore winds, heavy rain, and even gale-force winds on the 4th. The energy is moderate, but the conditions are completely blown out. Honestly, this setup looks more interesting for kite surfing than paddle surfing in that final stretch.

So, the call is clear: Monday the 24th of August is your best bet. Get on it if you’re an experienced surfer. The rest of the period is a mix of too small, too big, or too windy.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sat afternoon. Warm (max 28°C on Fri morning, min 23°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Tue night. Warm (max 28°C on Mon afternoon, min 24°C on Sun night). Wind will be generally light.

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)
1
1
1
1
1
1
1
2
1
0
1
3
5
5
!
!
!
!
!
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
10
0.4
SE
11
0.4
SE
11
0.5
S
9
0.4
SE
10
0.6
E
9
0.8
E
11
1
E
11
1
E
10
0.7
E
9
0.9
SSE
14
1.8
SSE
16
2.4
SSE
16
2.5
SSE
16
3
SSE
16
3.5
SSE
16
3.5
SSE
16
3.5
S
15
3.5
SSE
13
4
SSE
12
5.5
SSE
12
Wave Graph
Metric surfscale
Energy kJ
39
40
40
40
39
58
151
238
198
85
357
1692
2751
3428
4600
6043
6827
5270
4261
4554
9148
Wind (km/h)
10
SSE
15
S
15
SSW
15
SSW
20
SSW
15
SW
15
SW
15
SSW
5
NNW
10
NNE
15
ENE
5
NE
5
ESE
15
S
15
SSW
15
SSW
20
SSW
15
SSW
10
SSW
15
SE
10
S
Wind State
off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-on
on
cross-on
cross-on
cross-off
off
off
off
off
off
cross-off
cross-off
off
High Tide
9:44AM1.02m
7:57PM1.37m
8:28PM1.31m
9:26PM1.25m
3:57PM1.20m
11:30PM1.23m
3:57PM1.26m
1:06AM1.26m
4:09PM1.31m
2:09AM1.33m
4:25PM1.36m
2:57AM1.40m
Low Tide
1:27PM0.93m
4:02AM0.48m
5:32AM0.48m
6:59AM0.43m
7:26PM1.15m
8:00AM0.35m
8:31PM1.08m
8:45AM0.27m
9:07PM0.99m
9:22AM0.21m
9:38PM0.89m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
thunderstorm
thunderstorm
part cloud
clear
clear
clear
clear
clear
part cloud
clear
thunderstorm
cloud
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:00
5:01
5:01
5:03
5:03
5:03
5:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:21
6:19
6:17
6:16
6:15
6:14
 mm
2
2
2
1
6
Temp °C
27
27
26
28
27
26
28
28
26
26
26
25
27
28
26
28
28
27
26
26
27
Feels °C
29
29
29
29
28
28
30
30
31
28
29
29
30
31
28
31
30
31
28
28
29
  • 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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