Shida Surf Break

Lat Long: 35.33° N 140.40° E

Shida Surf Forecast and Surf Report

Issued: 2 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shida sea temperature is
26.3° C
0.4° 

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


Shida surf forecast from 18 Aug 2026:

  • Best quality surf: Saturday 22 Aug, 6AM (local time) - 2.5ft (0.8m), 11s period, E swell with cross-offshore winds.
  • Most powerful swell: Wednesday 26 Aug, 9AM (local time) - 8ft (2.5m), 17s period, S swell with 4,173 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 9AM (local time) - 1.5ft (0.5m), 8s 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 19) at 9AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.6m and 6s. 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 17s and forecast to arrive on Wednesday (Aug 26) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 22) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Wed 19th Aug)1.5ft (0.5m) 8s
Best Surf 6AM (Sat 22nd Aug)2.5ft (0.8m) 11s
Most Powerful 9AM (Wed 26th Aug)8ft (2.5m) 17s

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


The Lowdown

Alright, surfers, let’s break down what’s coming for Shida over the next couple of weeks.

Right off the bat, it’s dead flat. Nothing happening for the first few days. The first real glimmer of life is Saturday morning, August 22nd, with a small 0.8m easterly, but the energy is still weak (204). The real action starts to build on Monday, August 24th.

The standout window is Wednesday, August 26th, through Thursday, August 27th. The swell goes huge, with sets from the south at 8 to 10 feet, and a very long period around 16 to 17 seconds. The combined energy is massive (4,397 and 4,341). That’s for experts only, folks. Over 8 feet, it’s serious. The wind is offshore or cross-off, keeping it clean, but you’ll need to be experienced. The long period means it’s a proper groundswell, which can be a little tricky at a beach break like Shida.

The afternoon of Monday, August 24th, is a nice little session: 2 feet from the SSE, 14-second period, with a gentle offshore wind. Clean and fun.

Later on, from the 29th, the swell drops but stays rideable, with some 5 to 7-foot waves. The wind gets a bit messy, with some cross-onshore and a few storms around. The best call later is the morning of Sunday, August 30th: glassy conditions, 5 feet from the south, with moderate energy (505). That’s clean and a good option for most.

Expect crowds at Shida to be often, especially when the swell shows up. The water temp is about 79°, which is normal for this time of year.

The very end of the window, the first days of September, shows another huge pulse, with 10 to 16-foot swell and extreme energy, but that’s over a week out, and the winds are forecast to be strong to fresh. It’s promising, but don’t lock it in yet.

So, for the seasoned crew, the 26th and 27th are the real targets. For everyone else, the 30th morning is your best bet for a clean, manageable wave.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Fri morning, min 25°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Sat night. Warm (max 29°C on Sat morning, min 24°C on Sat 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)
1
1
1
1
1
1
1
1
1
2
1
0
0
0
0
1
2
2
3
2
3
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
0.5
E
9
0.5
E
9
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
10
1
E
10
0.8
E
10
0.7
E
9
0.7
E
9
0.5
E
12
0.7
SSE
14
0.9
SSE
17
1.8
SSE
15
2
SSE
14
2.4
SSE
15
Wave Graph
Metric surfscale
Energy kJ
35
36
37
39
40
40
40
39
58
151
221
198
120
80
78
69
186
427
1432
1598
2688
Wind (km/h)
5
SE
15
SE
5
SSE
10
SE
15
SSE
10
S
10
SSW
20
SSW
15
SSW
15
SW
20
SSW
10
NNE
15
NNE
15
ENE
5
NNE
0
E
15
S
20
SW
20
SW
25
SSW
20
SSW
Wind State
cross-off
cross-off
off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
on
cross-on
cross-on
on
glassy
off
cross-off
cross-off
cross-off
cross-off
High Tide
7:33PM1.41m
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
Low Tide
1:18PM0.81m
2:56AM0.45m
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
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
thunderstorm
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:00
5:00
5:01
5:01
5:03
5:03
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:22
6:21
6:19
6:17
6:16
6:15
 mm
2
Temp °C
27
27
26
27
27
26
28
28
26
29
29
26
26
26
25
27
28
26
29
29
26
Feels °C
30
29
29
29
29
29
29
29
28
30
30
30
29
28
28
32
30
28
28
28
28
  • 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 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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