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Surf Forecasts:

Shida surf break

Shida surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 am Wednesday 20 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Shida surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Shida sea temperature is
19.9° C
 (Which is slightly cooler than normal)

How big are the waves at Shida today?

The current surf forecast for Shida at 7AM is: 0.9m 10s primary swell from a Southeast direction and 0.4m 8s secondary swell from a Northeast direction (forecast issued at 02:00am May 20). An open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (20 May)3ft (0.9m)10s
Afternoon (20 May)3ft (0.9m)10s
Evening (20 May)3ft (0.9m)9s

Table - waves today at Shida. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Heavy rain (total 22mm), heaviest during Thu night. Warm (max 25°C on Thu morning, min 15°C on Fri afternoon). Winds increasing (light winds from the SW on Thu afternoon, strong winds from the NNE by Fri morning).

Wednesday
20
Thursday
21
Friday
22
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
9
0.9
SE
9
0.9
SE
9
0.9
SE
9
0.7
SE
9
1.4
S
6
2.1
SSW
7
2.2
SSW
7
2
SSW
8
1.7
SSW
8
1.3
SSW
8
1.6
NE
7
1.8
NE
7
2.2
NE
8
2.5
NE
8
2.5
ENE
8
3
ENE
9
3
ENE
9
Wave Graph
Metric surfscale
Energy kJ
142
142
142
139
139
134
128
128
125
125
90
151
397
485
439
318
202
233
355
558
819
919
1178
1364
Wind (km/h)
25
SSW
25
SW
25
SW
25
SW
25
SW
25
SSW
25
SSW
20
SSW
20
SSW
25
SW
25
SW
25
SW
35
SW
30
WSW
20
SW
20
NE
30
NNE
30
NNE
35
NNE
40
NNE
40
NNE
40
NNE
40
NNE
40
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
High Tide
4:58AM1.55m
8:09PM1.33m
5:41AM1.47m
9:07PM1.29m
6:32AM1.36m
Low Tide
11:44PM1.07m
12:36PM-0.02m
00:31AM1.09m
1:26PM0.10m
1:33AM1.08m
2:20PM0.25m
cloud
cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
light rain
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
4:31
—
—
—
—
—
—
—
4:30
—
—
—
—
—
—
—
4:28
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
—
6:37
—
—
—
—
—
—
—
6:38
—
—
—
—
—
—
—
6:39
—
 mm
—
—
—
—
—
—
—
—
1
—
—
1
1
1
1
3
5
1
1
2
2
2
1
—
Temp °C
20
20
20
23
24
24
22
21
21
22
23
23
25
23
22
18
17
16
17
16
16
15
16
16
Feels °C
18
18
19
21
22
22
21
20
21
22
23
22
23
22
22
17
13
11
12
9
10
9
9
9
Swell 1
Height (m)
Direction
Period (s)
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
9
0.9
SE
9
0.9
SE
9
0.9
SE
9
0.7
SE
9
0.7
SE
9
0.7
ESE
10
0.7
ESE
9
0.6
ESE
10
1.7
SSW
8
1.3
SSW
8
1.1
S
8
1
S
7
0.8
S
7
0.7
S
7
0.6
S
7
0.5
S
7
0.4
S
7
Energy kJ
142
142
142
139
139
134
128
128
125
125
90
84
81
78
60
318
202
138
108
68
51
37
23
15
Swell 2
Height (m)
Direction
Period (s)
0.4
NE
10
0.4
NE
9
0.4
NE
8
0.4
NE
8
0.4
NE
9
0.2
ENE
9
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.2
ENE
7
0.1
NE
7
0.1
E
11
0.1
NE
8
0.6
ESE
9
0.6
ESE
9
0.5
SE
9
0.5
SE
9
0.5
ESE
10
0.6
WSW
8
0.6
WSW
8
0.4
SW
8
0.2
WSW
8
Energy kJ
23
22
18
18
19
7
7
6
6
6
6
5
2
2
2
59
59
41
42
54
44
44
20
6
Swell 3
Height (m)
Direction
Period (s)
0.4
NE
9
0.4
NE
9
0.4
NE
9
0.4
NE
9
0.4
NE
9
—
0.4
NE
8
0.4
NE
8
0.1
S
8
—
0.1
E
12
0.1
NE
12
0.1
E
11
0.1
NE
11
0.1
NE
11
0.1
E
11
0.6
ESE
10
—
—
0.5
ESE
10
0.4
ESE
10
—
—
—
Energy kJ
27
27
26
26
26
—
18
17
1
—
3
6
3
5
5
2
72
—
—
54
37
—
—
—
Wind waves
Height (m)
Direction
Period (s)
0.7
S
4
0.8
S
4
0.9
SSW
5
0.9
SSW
5
0.9
SSW
5
1
SSW
5
0.8
SSW
5
0.7
SSW
4
0.6
S
4
0.7
SSW
4
1
S
5
1.4
S
6
2.1
SSW
7
2.2
SSW
7
2
SSW
8
0.5
NE
5
1.2
NE
6
1.6
NE
7
1.8
NE
7
2.2
NE
8
2.5
NE
8
2.5
ENE
8
3
ENE
9
3
ENE
9
Energy kJ
16
25
37
38
39
45
28
21
13
19
58
151
397
485
439
14
102
233
355
558
819
919
1178
1364
Nearest Offshore or Glassy
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Kaiser's (Hachijojima Island)
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Kisami-Ohama Beach
Shizuoka
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Shimoda Yamatoken (Tatado Hama)
Shizuoka
Kisami-Ohama Beach
Shizuoka
Choshi
Chiba
Choshi
Chiba
Katagai
Chiba
Tsurigasaki Surfing Beach (Tokyo 2020)
Chiba
Onjuku
Chiba
Niijima - Awaii
Izu Islands
Susuki
Shizuoka
Gomoda
Shikoku
Gomoda
Shikoku
Teba Shima
Shikoku
Nunoshima
Shikoku
Tainohama
Shikoku
Yasuda Rivermouth
Shikoku
Rating
(10 max)
1
1
1
2
2
2
1
1
1
1
1
1
1
2
1
2
3
1
2
1
1
1
1
1
Distance (km)
115
115
115
256
256
256
155
115
115
153
155
56
56
23
1
17
147
214
544
544
580
561
563
626
Best forecast wave conditions in Chiba
Choshi
Choshi
Katagai
Katagai
Kamogawa
Rating
(10 max)
1
1
2
3
3
Best forecast wave conditions in Japan
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Kaiser's (Hachijojima Island)
Izu Islands
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Takegashima
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Takegashima
Shikoku
Ko-Chan (Hedo Point)
Okinawa
Katagai
Chiba
Inamura Point
Kanagawa
Kamogawa
Chiba
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Nunoshima
Shikoku
Kaifu Rivermouth
Shikoku
Yonabaru
Okinawa
Rating
(10 max)
1
1
2
2
2
2
2
1
2
2
2
2
2
2
3
3
4
4
2
2
2
1
1
1
Header Global
Bali Village
Indonesia
Bali Village
Indonesia
Afife
Portugal
Cavalos de Fao
Portugal
Cavalos de Fao
Portugal
Crazy Left
Portugal
Achadas Da Cruz
Portugal
Anglet - Corsaires
France
Anglet - La Barre
France
Trial Harbour
Australia
Trial Harbour
Australia
Afife
Portugal
Anglet - Corsaires
France
Lambe Lambe
Brazil
Lambe Lambe
Brazil
Balimbing
Indonesia
Bali Village
Indonesia
Otago Peninsula - Allans Beach
New Zealand
Otago Peninsula - Allans Beach
New Zealand
Itaúna
Brazil
Itaúna
Brazil
Itaúna
Brazil
Trial Harbour
Australia
Trial Harbour
Australia
Rating
(10 max)
4
4
4
5
5
5
4
4
4
5
5
4
4
5
5
4
4
4
4
5
5
5
7
8
  • 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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